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Contents
Common Ethernet interface commands
display link-state-change statistics interface
reset link-state-change statistics interface
shutdown all-physical-interface
snmp-agent trap enable ifmonitor
Layer 2 Ethernet interface commands
Layer 3 Ethernet interface or subinterface commands
Ethernet interface commands
Common Ethernet interface commands
broadcast-suppression
Use broadcast-suppression to enable broadcast suppression and set the broadcast suppression threshold.
Use undo broadcast-suppression to disable broadcast suppression.
Syntax
broadcast-suppression { ratio | pps max-pps | kbps max-kbps }
undo broadcast-suppression
Default
Ethernet interfaces do not suppress broadcast traffic.
Views
Ethernet interface view
Predefined user roles
network-admin
Parameters
ratio: Sets the broadcast suppression threshold as a percentage of the interface bandwidth. The value range for this argument is 0 to 100. A smaller value means that less broadcast traffic is allowed to pass through.
pps max-pps: Specifies the maximum number of broadcast packets that the interface can forward per second. The value range for the max-pps argument (in pps) is 0 to 1.4881 × the interface bandwidth.
kbps max-kbps: Specifies the maximum number of kilobits of broadcast traffic that the Ethernet interface can forward per second. The value range for this argument (in kbps) is 0 to the interface bandwidth.
Usage guidelines
The broadcast storm suppression features limits the size of broadcast traffic to a threshold on an interface. When the broadcast traffic on the interface exceeds this threshold, the system drops packets until the traffic drops below this threshold.
Both the storm-constrain command and the broadcast-suppression command can suppress broadcast storms on a port. The broadcast-suppression command uses the chip to physically suppress broadcast traffic. It has less influence on the device performance than the storm-constrain command, which uses software to suppress broadcast traffic.
For the traffic suppression result to be determined, do not configure both the storm-constrain broadcast command and the broadcast-suppression command on an interface.
Examples
# Set the broadcast suppression threshold to 10000 kbps on HundredGigE 1/0/1.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] broadcast-suppression kbps 10000
Related commands
multicast-suppression
unicast-suppression
dampening
Use dampening to enable the device to dampen an interface when the interface is flapping.
Use undo dampening to restore the default.
Syntax
dampening [ half-life reuse suppress max-suppress-time ]
undo dampening
Default
Interface dampening is disabled on Ethernet interfaces.
Views
Ethernet interface view
Predefined user roles
network-admin
Parameters
half-life: Specifies the amount of time after which a penalty is decreased, in the range of 1 to 120 seconds. The default value is 54 seconds.
reuse: Specifies the reuse threshold in the range of 200 to 20000. The default value is 750. The reuse threshold must be less than the suppression threshold.
suppress: Specifies the suppression threshold in the range of 200 to 20000. The default value is 2000.
max-suppress-time: Specifies the maximum amount of time the interface can be dampened, in the range of 1 to 255 seconds. The default value is 162 seconds (three times the half-life timer).
Usage guidelines
When configuring the dampening command, follow these rules to set the values mentioned above:
· The ceiling is equal to 2(Max-suppress-time/Decay) × reuse-limits. It is not user configurable.
· The configured suppress limit is lower than or equal to the ceiling.
· The ceiling is lower than or equal to the maximum suppress limit supported.
This command, the link-delay command, and the port link-flap protect enable command are mutually exclusive on an interface.
This command does not take effect on the administratively down events. When you execute the shutdown command, the penalty restores to 0, and the interface reports the down event to the higher layer protocols.
Do not enable the dampening function on an interface with RRPP, MSTP or Smart Link enabled.
After an interface in down state is dampened, the interface state displayed through the display interface command, MIB, or Web is always down.
Examples
# Enable interface dampening on HundredGigE 1/0/1.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] dampening
# Enable interface dampening on HundredGigE 1/0/1, and set the following parameters:
· Half life time to 2 seconds.
· Reuse value to 800.
· .Suppression threshold to 3000.
· Maximum suppression interval to 5 seconds.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] dampening 2 800 3000 5
Related commands
display interface
link-delay
port link-flap protect enable
display ethernet statistics
Use display ethernet statistics to display the Ethernet module statistics.
Syntax
display ethernet statistics slot slot-number
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
slot slot-number: Specifies the slot number of the device, which is fixed at 1.
Examples
# Display the Ethernet module statistics for the specified slot.
<Sysname> display ethernet statistics slot 1
ETH receive packet statistics:
Totalnum : 10447 ETHIINum : 4459
SNAPNum : 0 RAWNum : 0
LLCNum : 0 UnknownNum : 0
ForwardNum : 4459 ARP : 0
MPLS : 0 ISIS : 0
ISIS2 : 0 IP : 0
IPV6 : 0
ETH receive error statistics:
NullPoint : 0 ErrIfindex : 0
ErrIfcb : 0 IfShut : 0
ErrAnalyse : 5988 ErrSrcMAC : 5988
ErrHdrLen : 0
ETH send packet statistics:
L3OutNum : 211 VLANOutNum : 0
FastOutNum : 155 L2OutNum : 0
ETH send error statistics:
MbufRelayNum : 0 NullMbuf : 0
ErrAdjFwd : 0 ErrPrepend : 0
ErrHdrLen : 0 ErrPad : 0
ErrQoSTrs : 0 ErrVLANTrs : 0
ErrEncap : 0 ErrTagVLAN : 0
IfShut : 0 IfErr : 0
Table 1 Command output
Field |
Description |
ETH receive packet statistics |
Statistics about the Ethernet packets received by the Ethernet module: · Totalnum—Total number of received packets. · ETHIINum—Number of packets encapsulated by using Ethernet II. · SNAPNum—Number of packets encapsulated by using SNAP. · RAWNum—Number of packets encapsulated by using RAW. · ISISNum—Number of packets encapsulated by using ISIS. · LLCNum—Number of packets encapsulated by using LLC. · UnknownNum—Number of packets encapsulated by using unknown methods. · ForwardNum—Number of packets forwarded at Layer 2 or sent to the CPU. · ARP—Number of ARP packets. · MPLS—Number of MPLS packets. This field is not supported in the current software version. · ISIS—Number of IS-IS packets. · ISIS2—Number of large 802.3/802.2 frames encapsulated by using IS-IS. · IP—Number of IP packets. · IPv6—Number of IPv6 packets. |
ETH receive error statistics |
Statistics about the error Ethernet packets in the inbound direction on the Ethernet module. Errors might be included in packets or occur during the receiving process. The items include: · NullPoint—Number of packets that include null pointers. · ErrIfindex—Number of packets that include incorrect interface indexes. · ErrIfcb—Number of packets that include incorrect interface control blocks. · IfShut—Number of packets that are being received when the interface is shut down. · ErrAnalyse—Number of packets that include packet parsing errors. · ErrSrcMAC—Number of packets that include incorrect source MAC addresses. · ErrHdrLen—Number of packets that include header length errors. |
ETH send packet statistics |
Statistics about the Ethernet packets sent by the Ethernet module: · L3OutNum—Number of packets sent out of Layer 3 Ethernet interfaces. · VLANOutNum—Number of packets sent out of VLAN interfaces. · FastOutNum—Number of packets fast forwarded. · L2OutNum—Number of packets sent out of Layer 2 Ethernet interfaces. |
ETH send error statistics |
Statistics about the error Ethernet packets in the outbound direction on the Ethernet module: · MbufRelayNum—Number of packets transparently sent. · NullMbuf—Number of packets with null pointers. · ErrAdjFwd—Number of packets with adjacency table errors. · ErrPrepend—Number of packets with extension errors. · ErrHdrLen—Number of packets with header length errors. · ErrPad—Number of packets with padding errors. · ErrQoSTrs—Number of packets that failed to be sent by QoS. · ErrVLANTrs—Number of packets that failed to be sent in VLANs. · ErrEncap—Number of packets that failed to be sent due to link header encapsulation failures. · ErrTagVLAN—Number of packets that failed to be sent due to VLAN tag encapsulation failures. · IfShut—Number of packets that are being sent when the interface is shut down. · IfErr—Number of packets with incorrect outgoing interfaces. |
Related commands
reset ethernet statistics
display interface
Use display interface to display interface information.
Syntax
display interface [ interface-type [ interface-number | interface-number.subnumber ] ] [ brief [ description | down ] ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
interface-type: Specifies an interface type.
interface-number: Specifies an interface number.
interface-number.subnumber: Specifies a subinterface number. The interface-number argument is an interface number. The subnumber argument is the number of a subinterface created under the interface. The value range for the subnumber argument is 1 to 4094.
brief: Displays brief interface information. If you do not specify this keyword, the command displays detailed interface information.
description: Displays complete interface descriptions. If you do not specify this keyword, the command displays only the first 27 characters of each interface description.
down: Displays information about interfaces in down state and the causes. If you do not specify this keyword, the command displays information about interfaces in all states.
Usage guidelines
If you do not specify an interface type, this command displays information about all interfaces.
If you specify an interface type but do not specify an interface number, this command displays information about all interfaces of the specified type.
Examples
# Display information about Layer 3 interface HundredGigE 1/0/1.
<Sysname> display interface hundredgige 1/0/1
HundredGigE1/0/1
Current state: Administratively DOWN
Line protocol state: DOWN
Description: HundredGigE1/0/1 Interface
Bandwidth: 1000000 kbps
Maximum transmission unit: 1500
Allow jumbo frames to pass
Broadcast max-ratio: 100%
Unknown-multicast max-ratio: 100%
Unicast max-ratio: 100%
Internet protocol processing: Disabled
IP packet frame type: Ethernet II, hardware address: 3822-d666-bd0c
IPv6 packet frame type: Ethernet II, hardware address: 3822-d666-bd0c
Media type is twisted pair, port hardware type is 1000_BASE_T
Fec counter Last 15mins uncorr errors: 0, corr errors:0
Peak1 Fec counter uncorr errors: 0, corr errors:0 00/00/0000 00:00:00:000000
Peak2 Fec counter uncorr errors: 0, corr errors:0 00/00/0000 00:00:00:000000
Port priority: 2
Unknown-speed mode, unknown-duplex mode
Link speed type is autonegotiation, link duplex type is autonegotiation
Flow-control is not enabled
Maximum frame length: 9964
Last link flapping: 6 hours 39 minutes 28 seconds
Last hardware down reason: PHY line side is down
Last clearing of counters: Never
Current system time:2019-01-08 14:50:06
Last time when physical state changed to up:2019-01-08 14:49:45
Last time when physical state changed to down:2019-01-08 14:49:45
Peak input rate: 0 bytes/sec, at 2013-07-07 16:07:11
Peak output rate: 0 bytes/sec, at 2013-07-07 16:07:11
Last 300 seconds input: 0 packets/sec 0 bytes/sec 0%
Last 300 seconds output: 0 packets/sec 0 bytes/sec 0%
Input (total): 0 packets, 0 bytes
0 unicasts, 0 broadcasts, 0 multicasts, - pauses
Input (normal): 0 packets, 0 bytes
0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses
Input: 0 input errors, 0 runts, 0 giants, 0 throttles
0 CRC, 0 frame, 0 overruns, - aborts
- ignored, - parity errors
Output (total): 0 packets, 0 bytes
0 unicasts, 0 broadcasts, 0 multicasts, - pauses
Output (normal): 0 packets, 0 bytes
0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses
Output: 0 output errors, - underruns, - buffer failures
0 aborts, 0 deferred, 0 collisions, 0 late collisions
- lost carrier, - no carrier
IPv4 traffic statistics:
Last 300 seconds input rate: 0 packets/sec, 0 bytes/sec
Last 300 seconds output rate: 0 packets/sec, 0 bytes/sec
Input: 0 packets, 0 bytes
Output: 0 packets, 0 bytes
IPv6 traffic statistics:
Last 300 seconds input rate: 0 packets/sec, 0 bytes/sec
Last 300 seconds output rate: 0 packets/sec, 0 bytes/sec
Input: 0 packets, 0 bytes
Output: 0 packets, 0 bytes
# Display detailed information about Layer 2 interface HundredGigE 1/0/1.
<Sysname> display interface hundredgige 1/0/1
HundredGigE1/0/1
Current state: DOWN
Line protocol state: DOWN
IP packet frame type: Ethernet II, hardware address: 000c-2963-b767
Description: HundredGigE1/0/1 Interface
Bandwidth: 100000 kbps
Loopback is not set
Media type is twisted pair, port hardware type is 1000_BASE_T_AN_SFP
Fec counter Last 15mins uncorr errors: 0, corr errors:0
Peak1 Fec counter uncorr errors: 0, corr errors:0 00/00/0000 00:00:00:000000
Peak2 Fec counter uncorr errors: 0, corr errors:0 00/00/0000 00:00:00:000000
Unknown-speed mode, unknown-duplex mode
Link speed type is autonegotiation, link duplex type is autonegotiation
Flow-control is not enabled
Maximum frame length: 9964
Allow jumbo frame to pass
Broadcast max-ratio: 100%
Unknown-multicast max-ratio: 100%
Unicast max-ratio: 100%
PVID: 1
MDI type: Automdix
Port link-type: Access
Tagged VLANs: None
UnTagged VLANs: 1
Port priority: 2
Last link flapping: 6 hours 39 minutes 25 seconds
Last hardware down reason: PHY line side is down
Last clearing of counters: 14:34:09 Tue 11/01/2011
Current system time:2019-01-08 14:50:06
Last time when physical state changed to up:2019-01-08 14:49:45
Last time when physical state changed to down:2019-01-08 14:49:45
Peak input rate: 0 bytes/sec, at 2013-07-17 22:06:19
Peak output rate: 0 bytes/sec, at 2013-07-17 22:06:19
Last 300 seconds input: 0 packets/sec 0 bytes/sec -%
Last 300 seconds output: 0 packets/sec 0 bytes/sec -%
Input (total): 0 packets, 0 bytes
0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses
Input (normal): 0 packets, 0 bytes
0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses
Input: 0 input errors, 0 runts, 0 giants, 0 throttles
0 CRC, 0 frame, 0 overruns, 0 aborts
0 ignored, 0 parity errors
Output (total): 0 packets, 0 bytes
0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses
Output (normal): 0 packets, 0 bytes
0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses
Output: 0 output errors, 0 underruns, 0 buffer failures
0 aborts, 0 deferred, 0 collisions, 0 late collisions
0 lost carrier, 0 no carrier
IPv4 traffic statistics:
Last 300 seconds input rate: 0 packets/sec, 0 bytes/sec
Last 300 seconds output rate: 0 packets/sec, 0 bytes/sec
Input: 0 packets, 0 bytes
Output: 0 packets, 0 bytes
IPv6 traffic statistics:
Last 300 seconds input rate: 0 packets/sec, 0 bytes/sec
Last 300 seconds output rate: 0 packets/sec, 0 bytes/sec
Input: 0 packets, 0 bytes
Output: 0 packets, 0 bytes
Table 2 Command output
Field |
Description |
Current state |
Physical link state of the interface: · Administratively DOWN—The interface has been shut down by using the shutdown command. · DOWN—The interface is administratively up, but its physical state is down (possibly because no physical link exists or the link has failed). · DOWN(up-delay)—The interface up event is delayed on the interface, because the port up-delay command is executed on the interface. · DOWN ( Link-Aggregation interface down )—The aggregate interface to which the interface belongs has been shut down by using the shutdown command. · DOWN (Monitor-Link uplink down)—The interface has been shut down by Monitor Link. · Link-Flap DOWN—The interface has been shut down by the link flapping protection feature. · mac-address moving down—The interface has been shut down by the MAC address move suppression feature. · Storm-Constrain—The interface has been shut down because the storm control feature detected that unknown unicast traffic, multicast traffic, or broadcast traffic exceeded the upper threshold. · STP DOWN—The interface has been shut down by the BPDU guard feature. · M-LAG MAD Shutdown—The interface was set to the M-LAG MAD DOWN state when the M-LAG system split. · UP—The interface is both administratively and physically up. |
Line protocol state |
Data link layer state of the interface. The state is determined through automatic parameter negotiation at the data link layer. · UP—The data link layer protocol is up. · UP (spoofing)—The data link layer protocol is up, but the link is an on-demand link or does not exist. This attribute is typical of null interfaces and loopback interfaces. · DOWN—The data link layer protocol is down. · DOWN (protocols)—The data link layer has been shut down by protocols included in the parentheses. Available protocols include: ¡ DLDP—Shuts down the data link layer when it detects that the link is unidirectional. ¡ LAGG—Shuts down the data link layer when it detects that the aggregate interface does not have Selected ports. ¡ BFD—Shuts down the data link layer when it detects a link failure. |
Bandwidth |
Expected bandwidth of the interface. |
Maximum transmission unit |
MTU of the interface. |
Internet protocol processing |
IP packet processing capability of the interface when the interface is not assigned an IP address: · Disabled—The interface cannot process IP packets. · Enabled—The interface can process IP packets. |
Internet address: ip-address/mask-length (Type) |
IP address of the interface and type of the address in parentheses. Possible IP address types include: · Primary—Manually configured primary IP address. · Sub—Manually configured secondary IP address. If the interface has both primary and secondary IP addresses, the primary IP address is displayed. If the interface has only secondary IP addresses, the lowest secondary IP address is displayed. · DHCP-allocated—DHCP allocated IP address. For more information, see DHCP client configuration in Layer 3—IP Services Configuration Guide. · BOOTP-allocated—BOOTP allocated IP address. For more information, see BOOTP client configuration in Layer 3—IP Services Configuration Guide. · Unnumbered—IP address borrowed from another interface. |
IP packet frame type |
IPv4 packet framing format. |
hardware address |
MAC address of the interface. |
IPv6 packet frame type |
IPv6 packet framing format. |
Media type is |
Medium type of the interface. |
Port power is |
Maximum power that the interface can support. |
Fec counter Last 15mins |
This field is supported only in Release 5212P03 and later versions. FEC data is collected every 15 minutes. This field displays the most recently saved data. |
Peak1 Fec counter |
This field is supported only in Release 5212P03 and later versions. This field records the peak value and time based on the correctable errors. |
Peak2 Fec counter |
This field is supported only in Release 5212P03 and later versions. This field records the peak value and time based on the uncorrectable errors. |
Port hardware type is |
Hardware type of the interface. |
Port priority |
Port priority of the interface. |
10Mbps-speed mode |
The interface is operating at 10 Mbps. This field depends on your configuration and the link parameter negotiation result. |
100Mbps-speed mode |
The interface is operating at 100 Mbps. This field depends on your configuration and the link parameter negotiation result. |
1000Mbps-speed mode |
The interface is operating at 1000 Mbps. This field depends on your configuration and the link parameter negotiation result. |
10Gbps-speed mode |
The interface is operating at 10 Gbps. This field depends on your configuration and the link parameter negotiation result. |
40Gbps-speed mode |
The interface is operating at 40 Gbps. This field depends on your configuration and the link parameter negotiation result. |
100Gbps-speed mode |
The interface is operating at 100 Gbps. This field depends on your configuration and the link parameter negotiation result. |
200Gbps-speed mode |
The interface is operating at 200 Gbps. This field depends on your configuration and the link parameter negotiation result. |
400Gbps-speed mode |
The interface is operating at 400 Gbps. This field depends on your configuration and the link parameter negotiation result. |
Unknown-speed mode |
The speed of the interface is unknown because the speed negotiation fails or the interface is physically disconnected. |
full-duplex mode |
The interface is operating in full duplex mode. This field depends on your configuration and the link parameter negotiation result. |
unknown-duplex mode |
The duplex mode of the interface is unknown because the duplex mode negotiation fails or the interface is physically disconnected. |
Link speed type is autonegotiation |
The interface is configured with the speed auto command. |
Link speed type is force link |
The interface is manually configured with a speed (for example, 1000 Mbps) by using the speed command. |
link duplex type is autonegotiation |
The interface is configured with the duplex auto command. |
link duplex type is force link |
The interface is manually configured with a duplex mode (for example, half or full) by using the duplex command. |
Flow-control is not enabled |
Generic flow control is disabled on the interface. This field depends on your configuration and the link parameter negotiation result. |
Maximum frame length |
Maximum length of Ethernet frames allowed to pass through the interface. |
Allow jumbo frame to pass |
The interface allows jumbo frames to pass through. |
Broadcast max- |
Broadcast storm suppression threshold in ratio, pps, or kbps. The unit of the threshold depends on your configuration. |
Unknown-multicast max- |
Multicast storm suppression threshold in ratio, pps, or kbps. The unit of the threshold depends on your configuration. |
Unicast max- |
Unknown unicast storm suppression threshold in ratio, pps, or kbps. The unit of the threshold depends on your configuration. |
PVID |
Port VLAN ID (PVID) of the interface. |
MDI type |
MDIX mode of the interface: · automdix. · mdi. · mdix. |
Port link-type |
Link type of the interface: · access. · trunk. · hybrid. |
Tagged VLANs |
VLANs for which the interface sends packets without removing VLAN tags. |
Untagged VLANs |
VLANs for which the interface sends packets after removing VLAN tags. |
VLAN Passing |
VLANs whose packets can be forwarded by the port. The VLANs must have been created. |
VLAN permitted |
VLANs whose packets are permitted by the port. |
Trunk port encapsulation |
Encapsulation protocol type for the trunk port. |
Last link flapping |
The amount of time that has elapsed since the most recent physical state change of the interface. This field displays Never if the interface has been physically down since device startup. |
Last hardware down reason |
Reason for which the interface hardware went down: · PHY line side is down. · PHY system side is down. · No optical signal has been received at the optical port. |
Last clearing of counters |
Time when the reset counters interface command was last used to clear the interface statistics. This field displays Never if the reset counters interface command has never been used on the interface since device startup. |
Current system time |
Current system date and time, which is displayed in the YYYY-MM-DD hh:mm:ss format by default. If the time zone is configured, this field is in the YYYY-MM-DD hh:mm:ss zone-name±hh:mm:ss format, where the zone-name argument is the local time zone name. |
Last time when physical state changed to up |
Last date and time when the physical state of the interface changed to up, which is displayed in the YYYY-MM-DD hh:mm:ss format by default. If the time zone is configured, this field is in the YYYY-MM-DD hh:mm:ss zone-name±hh:mm:ss format, where the zone-name argument is the local time zone name. If the physical state of the interface has never changed to up, this field displays a hyphen (-). |
Last time when physical state changed to down |
Last date and time when the physical state of the interface changed to down, which is displayed in the YYYY-MM-DD hh:mm:ss format by default. If the time zone is configured, this field is in the YYYY-MM-DD hh:mm:ss zone-name±hh:mm:ss format, where the zone-name argument is the local time zone name. If the physical state of the interface has never changed to down, this field displays a hyphen (-). |
Last 300 seconds input: 0 packets/sec 0 bytes/sec 0% Last 300 seconds output: 0 packets/sec 0 bytes/sec 0% |
Average inbound or outbound traffic rate (in pps and Bps) in the last 300 seconds, and the ratio of the actual rate to the interface bandwidth. A hyphen (-) indicates that the statistical item is not supported. |
Input(total): 0 packets, 0 bytes 0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses |
The two fields on the first line represent the inbound traffic statistics (in packets and bytes) for the interface. All inbound normal packets, abnormal packets, and normal pause frames were counted. The four fields on the second line represent: · Number of inbound unicast packets. · Number of inbound broadcasts. · Number of inbound multicasts. · Number of inbound pause frames. A hyphen (-) indicates that the statistical item is not supported. |
Input(normal): 0 packets, 0 bytes 0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses |
The two fields on the first line represent the inbound normal traffic and pause frame statistics (in packets and bytes) for the interface. The four fields on the second line represent: · Number of inbound normal unicast packets. · Number of inbound normal broadcasts. · Number of inbound normal multicasts. · Number of inbound normal pause frames. A hyphen (-) indicates that the statistical item is not supported. |
input errors |
Statistics of incoming error packets. |
runts |
Number of inbound frames meeting the following conditions: · Shorter than 64 bytes. · In correct format. · Containing valid CRCs. |
giants |
Number of inbound giants. Giants refer to frames larger than the maximum frame length supported on the interface. For an Ethernet interface that does not permit jumbo frames, the maximum frame length is as follows: · 1532 bytes (without VLAN tags). · 1536 bytes (with VLAN tags). For an Ethernet interface that permits jumbo frames, the maximum Ethernet frame length is set when you configure jumbo frame support on the interface. |
throttles |
Number of inbound frames that had a non-integer number of bytes. |
CRC |
Total number of inbound frames that had a normal length, but contained CRC errors. |
frame |
Total number of inbound frames that contained CRC errors and a non-integer number of bytes. |
overruns |
Number of packets dropped because the input rate of the port exceeded the queuing capability. |
aborts |
Total number of illegal inbound packets: · Fragment frames—CRC error frames shorter than 64 bytes. The length (in bytes) can be an integral or non-integral value. · Jabber frames—CRC error frames greater than the maximum frame length supported on the Ethernet interface (with an integral or non-integral length). ¡ For an Ethernet interface that does not permit jumbo frames, the maximum frame length is 1532 bytes (without VLAN tags) or 1536 bytes (with VLAN tags). ¡ For an Ethernet interface that permits jumbo frames, the maximum Ethernet frame length is set when you configure jumbo frame support on the interface. · Symbol error frames—Frames that contained a minimum of one undefined symbol. · Unknown operation code frames—Non-pause MAC control frames. · Length error frames—Frames whose 802.3 length fields did not match the actual frame length (46 to 1500 bytes). |
ignored |
Number of inbound frames dropped because the receiving buffer of the port ran low. |
parity errors |
Total number of frames with parity errors. |
Output(total): 0 packets, 0 bytes 0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses |
The two fields on the first line represent the outbound traffic statistics (in packets and bytes) for the interface. All outbound normal packets, abnormal packets, and normal pause frames were counted. The four fields on the second line represent: · Number of outbound unicast packets. · Number of outbound broadcasts. · Number of outbound multicasts. · Number of outbound pause frames. A hyphen (-) indicates that the statistical item is not supported. |
Output(normal): 0 packets, 0 bytes 0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses |
The two fields on the first line represent the outbound normal traffic and pause frame statistics (in packets and bytes) for the interface. The four fields on the second line represent: · Number of outbound normal unicast packets. · Number of outbound normal broadcasts. · Number of outbound normal multicasts. · Number of outbound normal pause frames. A hyphen (-) indicates that the statistical item is not supported. |
output errors |
Number of outbound packets with errors. |
underruns |
Number of packets dropped because the output rate of the interface exceeded the output queuing capability. This is a low-probability hardware anomaly. |
buffer failures |
Number of packets dropped because the transmitting buffer of the interface ran low. |
aborts |
Number of packets that failed to be transmitted, for example, because of Ethernet collisions. |
deferred |
Number of frames that the interface deferred to transmit because of detected collisions. |
collisions |
Number of frames that the interface stopped transmitting because Ethernet collisions were detected during transmission. |
late collisions |
Number of frames that the interface deferred to transmit after transmitting their first 512 bits because of detected collisions. |
lost carrier |
Number of carrier losses during transmission. This counter increases by one when a carrier is lost, and applies to serial WAN interfaces. |
no carrier |
Number of times that the port failed to detect the carrier when attempting to send frames. This counter increases by one when a port failed to detect the carrier, and applies to serial WAN interfaces. |
Peak input rate |
Peak rate of inbound traffic in Bps, and the time when the peak inbound traffic rate occurred. |
Peak output rate |
Peak rate of outbound traffic in Bps, and the time when the peak outbound traffic rate occurred. |
IPv4 traffic statistics |
IPv4 packet statistics. |
IPv6 traffic statistics |
IPv6 packet statistics. |
Last 300 seconds input rate: 0 packets/sec, 0 bytes/sec |
Average inbound traffic rate (in pps and Bps) in the last 300 seconds. A hyphen (-) indicates that the statistical item is not supported. |
Last 300 seconds output rate: 0 packets/sec, 0 bytes/sec |
Average outbound traffic rate (in pps and Bps) in the last 300 seconds. A hyphen (-) indicates that the statistical item is not supported. |
Input: 0 packets, 0 bytes |
Inbound traffic statistics (in packets and bytes) for the interface. A hyphen (-) indicates that the statistical item is not supported. |
Output: 0 packets, 0 bytes |
Outbound traffic statistics (in packets and bytes) for the interface. A hyphen (-) indicates that the statistical item is not supported. |
# Display brief information about all interfaces.
<Sysname> display interface brief
Brief information on interfaces in route mode:
Link: ADM - administratively down; Stby - standby
Protocol: (s) – spoofing
Interface Link Protocol Primary IP Description
HGE1/0/1 DOWN DOWN --
Loop0 UP UP(s) 2.2.2.9
NULL0 UP UP(s) --
Vlan1 UP DOWN --
Vlan999 UP UP 192.168.1.42
Brief information on interfaces in bridge mode:
Link: ADM - administratively down; Stby - standby
Speed: (a) - auto
Duplex: (a)/A - auto; H - half; F - full
Type: A - access; T - trunk; H - hybrid
Interface Link Speed Duplex Type PVID Description
HGE1/0/2 DOWN auto A A 1
HGE1/0/3 UP auto F(a) A 1 aaaaaaaaaaaaaaaaaaaaaaaaaaa
# Display brief information about HundredGigE 1/0/3, including the complete description of the interface.
<Sysname> display interface hundredgige 1/0/3 brief description
Brief information on interfaces in bridge mode:
Link: ADM - administratively down; Stby - standby
Speed: (a) - auto
Duplex: (a)/A - auto; H - half; F - full
Type: A - access; T - trunk; H - hybrid
Interface Link Speed Duplex Type PVID Description
HGE1/0/3 UP auto F(a) A 1 aaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
# Display information about interfaces in DOWN state and the causes.
<Sysname> display interface brief down
Brief information on interfaces in route mode:
Link: ADM - administratively down; Stby - standby
Interface Link Cause
HGE1/0/1 DOWN Not connected
Vlan2 DOWN Not connected
Brief information on interfaces in bridge mode:
Link: ADM - administratively down; Stby - standby
Interface Link Cause
HGE1/0/2 DOWN Not connected
Table 3 Command output
Field |
Description |
Brief information on interfaces in route mode: |
Brief information about Layer 3 interfaces. |
Interface |
Interface name. |
Link |
Physical link state of the interface: · UP—The interface is physically up. · DOWN—The interface is physically down. · ADM—The interface has been shut down by using the shutdown command. To restore the physical state of the interface, use the undo shutdown command. · Stby—The interface is a backup interface in standby state. To see the primary interface, use the display interface-backup state command. |
Protocol |
Data link layer protocol state of the interface: · UP—The data link layer protocol of the interface is up. · DOWN—The data link layer protocol of the interface is down. · UP(s)—The data link layer protocol of the interface is up, but the link is an on-demand link or does not exist. The (s) attribute represents the spoofing flag. This value is typical of null interfaces and loopback interfaces. |
Primary IP |
Primary IP address of the interface. This field displays two hyphens (--) if the interface does not have an IP address. |
Description |
Description of the interface. |
Brief information of interfaces in bridge mode: |
Brief information about Layer 2 interfaces. |
Type: A - access; T - trunk; H – hybrid |
Link type options for interfaces. |
Speed |
Speed of the interface, in bps. This field displays the (a) flag next to the speed if the speed is automatically negotiated. This field displays auto if the interface is configured to autonegotiate its speed but the autonegotiation has not started. |
Duplex |
Duplex mode of the interface: · A—Autonegotiation. The interface is configured to autonegotiate its duplex mode but the autonegotiation has not started. · F—Full duplex. · F(a)—Autonegotiated full duplex. |
Type |
Link type of the interface: · A—Access. · H—Hybrid. · T—Trunk. |
PVID |
Port VLAN ID. |
Cause |
Cause for the physical link state of an interface to be DOWN: · Administratively—The interface has been manually shut down by using the shutdown command. To restore the physical state of the interface, use the undo shutdown command. · DOWN ( Link-Aggregation interface down )—The interface is a member port of an aggregate interface, and the aggregate interface is down. · DOWN (Loopback detection down)—The loopback detection module has detected loops. · DOWN ( Monitor-Link uplink down )—The monitor link module has detected that the uplink is down. · Not connected—No physical connection exists (possibly because the network cable is disconnected or faulty). · Storm-Constrain—The storm control feature has detected that unknown unicast traffic, multicast traffic, or broadcast traffic exceeded the upper threshold. · STP DOWN—The interface has been shut down by the BPDU guard feature. · Standby—The interface is a backup interface in standby state. |
reset counters interface
display link-flap protection
Use display link-flap protection to display information about link flapping protection on an interface.
display link-flap protection [ interface interface-type [ interface-number ] ]
Views
Any view
Predefined user roles
network-admin
network-operator
interface-type: Specifies an interface type. If you do not specify an interface type, the command displays information about link flapping protection on all interfaces.
interface-number: Specifies an interface number. If you do not specify an interface number, the command displays information about link flapping protection on all interfaces of the specified type.
Examples
# Display information about link flapping protection on an interface.
<Sysname> display link-flap protection
Link-flap protection: Enabled
Interface Link-flap Status Interval Threshold
HGE1/0/1 Enabled Down 10 5
HGE1/0/2 Disabled N/A -- --
Field |
Description |
Link-flap protection |
Status of link flapping protection on all interfaces: · Enabled—Link flapping protection is enabled on all interfaces. · Disabled—Link flapping protection is disabled on all interfaces. |
Link-flap |
Status of link flapping protection on an interface: · Enabled—Link flapping protection is enabled on an interface. · Disabled—Link flapping protection is disabled on an interface. · Unconfig—Link flapping protection is not configured on an interface. |
Status |
Status of an interface: · Down—The interface has been shut down by the link flapping protection feature. · N/A—The interface status is not affected by the link flapping protection feature. |
Interval |
Link flapping detection interval for an interface. |
Threshold |
Link flapping detection threshold for an interface. |
Related commands
link-flap protect enable
port link-flap protect enable
display link-state-change statistics interface
Use display link-state-change statistics interface to display the physical link state change statistics of interfaces.
Syntax
display link-state-change statistics interface [ interface-type [ interface-number ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
interface-type: Specifies an interface type.
interface-number: Specifies an interface number.
Usage guidelines
If you do not specify an interface type, this command displays the link state change statistics for all up interfaces that have traffic counters.
If you specify an interface type but do not specify an interface number, this command displays the link state change statistics for all interfaces of the specified type.
Examples
# Display the link state change statistics of all interfaces.
<Sysname> display link-state-change statistics interface
Interface Change-times Last-change-time Reset link-state time
Link-flap-begin Link-flap-end
HGE1/0/1 0 Never Never
Never Never
Table 5 Command output
Field |
Description |
Interface |
Abbreviated interface name. |
Change-times |
Number of physical state changes. |
Last-change-time |
Last time when the physical state changed. |
Reset link-state time |
Time when the physical link state change statistics were cleared. |
Link-flap-begin |
Last time when a physical link state flapping began. If no link state flapping has occurred, this field displays Never. |
Link-flap-end |
Last time when a physical link state flapping ended. If no link state flapping has occurred, this field displays Never. |
Related commands
reset link-state-change statistics interface
display packet-drop
Use display packet-drop to display information about packets dropped on an interface.
Syntax
display packet-drop { interface [ interface-type [ interface-number ] ] | summary }
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
interface-type: Specifies an interface type.
interface-number: Specifies an interface number.
summary: Displays the summary of dropped packets on only interfaces that support this command.
Usage guidelines
If you do not specify an interface type, this command displays information about dropped packets on only interfaces that support this command on the device.
If you specify an interface type but do not specify an interface number, this command displays information about dropped packets on only interfaces of the specified type that support this command.
Examples
# Display information about dropped packets on HundredGigE 1/0/1.
<Sysname> display packet-drop interface hundredgige 1/0/1
HundredGigE1/0/1:
Packets dropped due to STP non-forwarding state: 0
Packets dropped due to insufficient data buffer. Input dropped: 0 Output dropped:0
ed:0
Packets of ECN marked: 0
# Display the summary of dropped packets on only interfaces that support this command.
<Sysname> display packet-drop summary
All interfaces:
Packets dropped due to STP non-forwarding state: 0
Packets dropped due to insufficient data buffer. Input dropped: 0 Output dropped:0
ed:0
Packets of ECN marked: 0
Table 6 Command output
Field |
Description |
Packets dropped due to STP non-forwarding state |
Packets that are dropped because STP is in the non-forwarding state. |
Packets dropped due to insufficient data buffer. Input dropped: 0 Output dropped:0 |
Inbound and outbound packets that are dropped due to insufficient data buffer. The Switch Series supports only collecting the inbound packet statistics. |
Packets of ECN marked |
Number of packets with the explicit congestion notification (ECN) field marked as 11 due to triggering WRED (Weighted Random Early Detection) queue thresholds. For more information about the WRED and the ECN, see QoS configuration in ACL and QoS Configuration Guide. · The ECN packet statistics collection feature cannot collect statistics about encapsulated packets. · When QoS and ACL resources are exhausted, the ECN packet statistics collection feature will not function. |
duplex
Use duplex to set the duplex mode for an Ethernet interface.
Use undo duplex to restore the default.
Syntax
duplex { auto | full | half }
undo duplex
Default
Ethernet interfaces operate in autonegotiation mode.
Views
Ethernet interface view
Predefined user roles
network-admin
Parameters
auto: Configures the interface to autonegotiate the duplex mode with the peer.
full: Configures the interface to operate in full duplex mode. In this mode, the interface can receive and transmit packets simultaneously.
half: Configures the interface to operate in half duplex mode. In this mode, the interface can only receive or transmit packets at a given time. This keyword is supported only on management Ethernet interfaces.
Examples
# Configure HundredGigE 1/0/1 to operate in full duplex mode.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] duplex full
flow-control
Use flow-control to enable TxRx-mode generic flow control on an Ethernet interface.
Use undo flow-control to disable TxRx-mode generic flow control on the Ethernet interface.
Syntax
flow-control
undo flow-control
Default
TxRx-mode generic flow control is disabled on an Ethernet interface.
Views
Ethernet interface view
Predefined user roles
network-admin
Usage guidelines
With TxRx-mode generic flow control configured, an interface can both send and receive flow control frames:
· When congested, the interface sends a flow control frame to its peer.
· Upon receiving a flow control frame from the peer, the interface suspends sending packets.
To implement flow control on a link, enable generic flow control at both ends of the link.
Examples
# Enable TxRx-mode generic flow control on HundredGigE 1/0/1.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] flow-control
flow-control receive enable
Use flow-control receive enable to enable Rx-mode generic flow control on an Ethernet port.
Use undo flow-control to disable Rx-mode generic flow control on an Ethernet port.
Syntax
flow-control receive enable
undo flow-control
Default
Rx-mode generic flow control is disabled on Ethernet interfaces.
Views
Ethernet interface view
Predefined user roles
network-admin
Usage guidelines
With Rx-mode flow control enabled, an interface can receive but cannot send flow control frames.
· When the interface receives a flow control frame from its peer, it suspends sending packets to the peer.
· When traffic congestion occurs on the interface, it cannot send flow control frames to the peer.
To handle unidirectional traffic congestion on a link, configure the flow-control receive enable command at one end, and the flow-control command at the other. To enable both ends of the link to handle traffic congestion, configure the flow-control command at both ends.
Examples
# Enable Rx-mode generic flow control on HundredGigE 1/0/1.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-hundredgige 1/0/1] flow-control receive enable
Related commands
flow-control
flow-interval
Use flow-interval to set the statistics polling interval.
Use undo flow-interval to restore the default.
Syntax
flow-interval interval
undo flow-interval
Default
The statistics polling interval is 300 seconds.
Views
Ethernet interface view
Predefined user roles
network-admin
Parameters
interval: Sets the statistics polling interval in seconds. The interval is in the range of 5 to 300 and must be a multiple of 5.
Examples
# Set the statistics polling interval to 100 seconds on HundredGigE 1/0/1.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] flow-interval 100
ifmonitor crc-error
Use ifmonitor crc-error to configure global CRC error packet alarm parameters.
Use undo ifmonitor crc-error to restore the default.
Syntax
ifmonitor crc-error slot slot-number high-threshold high-value low-threshold low-value interval interval [ shutdown ]
undo ifmonitor crc-error slot slot-number
Default
The upper threshold is 1000, the lower threshold is 100, and the statistics collection and comparison interval is 10 seconds for CRC error packet alarms.
Views
System view
Predefined user roles
network-admin
Parameters
high-threshold high-value: Specifies the upper threshold for CRC error packet alarms, in the range of 1 to 4294967295 packets.
low-threshold low-value: Specifies the lower threshold for CRC error packet alarms, in the range of 1 to 4294967295 packets.
interval interval: Specifies the statistics collection and comparison interval for CRC error packets, in the range of 1 to 65535 seconds.
shutdown: Shuts down an interface when the number of incoming CRC error packets on the interface exceeds the upper threshold. Then, the interface stops forwarding all packets. To recover the interface, execute the undo shutdown command on the interface. If you do not specify this keyword, an upper threshold exceeding alarm is generated and the interface enters the alarm state when the number of incoming CRC error packets exceeds the upper threshold on the interface.
slot slot-number: Specifies the slot number of the device, which is fixed at 1.
Usage guidelines
With the CRC error packet alarm function enabled, when the number of incoming CRC error packets on an interface in normal state within the specified interval exceeds the upper threshold, the interface generates an upper threshold exceeding alarm and enters the alarm state. When the number of incoming CRC error packets on an interface in the alarm state within the specified interval drops below the lower threshold, the interface generates a recovery alarm and restores to the normal state.
You can configure the CRC error packet alarm parameters in system view and interface view.
· The configuration in system view takes effect on all interfaces of the specified slot. The configuration in interface view takes effect only on the current interface.
· For an interface, the configuration in interface view takes priority, and the configuration in system view is used only when no configuration is made in interface view.
When you execute this command multiple times, the most recent configuration takes effect.
Examples
# Set the upper threshold to 5000, lower threshold to 400, and statistics collection and comparison interval to 6 seconds for CRC error packet alarms.
<Sysname> system-view
[Sysname] ifmonitor crc-error high-threshold 5000 low-threshold 400 interval 6
Related commands
snmp-agent trap enable ifmonitor
ifmonitor input-error
Use ifmonitor input-error to configure global input error packet alarm parameters.
Use undo ifmonitor input-error to restore the default.
Syntax
ifmonitor input-error slot slot-number high-threshold high-value low-threshold low-value interval interval [ shutdown ]
undo ifmonitor input-error slot slot-number
Default
The upper threshold is 1000, the lower threshold is 100, and the statistics collection and comparison interval is 10 seconds for input error packet alarms.
Views
System view
Predefined user roles
network-admin
Parameters
high-threshold high-value: Specifies the upper threshold for input error packet alarms, in the range of 1 to 4294967295 packets.
low-threshold low-value: Specifies the lower threshold for input error packet alarms, in the range of 1 to 4294967295 packets.
interval interval: Specifies the statistics collection and comparison interval for input error packets, in the range of 1 to 65535 seconds.
shutdown: Shuts down an interface when the number of input error packets on the interface exceeds the upper threshold. Then, the interface stops forwarding all packets. To recover the interface, execute the undo shutdown command on the interface. If you do not specify this keyword, an upper threshold exceeding alarm is generated and the interface enters the alarm state when the number of input error packets exceeds the upper threshold on the interface.
slot slot-number: Specifies the slot number of the device, which is fixed at 1.
Usage guidelines
With the input error packet alarm function enabled, when the number of input error packets on an interface in normal state within the specified interval exceeds the upper threshold, the interface generates an upper threshold exceeding alarm and enters the alarm state. When the number of input error packets on an interface in the alarm state within the specified interval drops below the lower threshold, the interface generates a recovery alarm and restores to the normal state.
You can configure the input error packet alarm parameters in system view and interface view.
· The configuration in system view takes effect on all interfaces of the specified slot. The configuration in interface view takes effect only on the current interface.
· For an interface, the configuration in interface view takes priority, and the configuration in system view is used only when no configuration is made in interface view.
When you execute this command multiple times, the most recent configuration takes effect.
Examples
# Set the upper threshold to 5000, lower threshold to 400, and statistics collection and comparison interval to 6 seconds for input error packet alarms.
<Sysname> system-view
[Sysname] ifmonitor input-error high-threshold 5000 low-threshold 400 interval 6
Related commands
snmp-agent trap enable ifmonitor
ifmonitor input-usage
Use ifmonitor input-usage to configure global input bandwidth usage alarm parameters.
Use undo ifmonitor input-usage to restore the default.
Syntax
ifmonitor input-usage slot slot-number high-threshold high-value low-threshold low-value
undo ifmonitor input-usage slot slot-number
Default
The upper threshold is 90, and the lower threshold is 80.
Views
System view
Predefined user roles
network-admin
Parameters
high-threshold high-value: Specifies the upper threshold for input bandwidth usage alarms, in the range of 1 to 100.
low-threshold low-value: Specifies the lower threshold for input bandwidth usage alarms, in the range of 1 to 100.
slot slot-number: Specifies the slot number of the device, which is fixed at 1.
Usage guidelines
With the input bandwidth usage alarm function enabled, when the input bandwidth usage on an interface in normal state within the most recent statistics polling interval exceeds the upper threshold, the interface generates an upper threshold exceeding alarm and enters the alarm state. When the input bandwidth usage on an interface in the alarm state within the most recent statistics polling interval drops below the lower threshold, the interface generates a recovery alarm and restores to the normal state.
You can use the flow-interval command to set the statistics polling interval.
You can configure the input bandwidth usage alarm parameters in system view and interface view.
· The configuration in system view takes effect on all interfaces of the specified slot. The configuration in interface view takes effect only on the current interface.
· For an interface, the configuration in interface view takes priority, and the configuration in system view is used only when no configuration is made in interface view.
For this command to take effect, you must use the snmp-agent trap enable ifmonitor command to enable the input bandwidth usage alarm function.
When you execute this command multiple times, the most recent configuration takes effect.
Examples
# Set the upper threshold to 95 and lower threshold to 80 for input bandwidth usage alarms.
<Sysname> system-view
[Sysname] ifmonitor input-usage high-threshold 95 low-threshold 80
Related commands
flow-interval
snmp-agent trap enable ifmonitor
ifmonitor output-error
Use ifmonitor output-error to configure global output error packet alarm parameters.
Use undo ifmonitor output-error to restore the default.
Syntax
ifmonitor output-error slot slot-number high-threshold high-value low-threshold low-value interval interval [ shutdown ]
undo ifmonitor output-error slot slot-number
Default
The upper threshold is 1000, the lower threshold is 100, and the statistics collection and comparison interval is 10 seconds for output error packet alarms.
Views
System view
Predefined user roles
network-admin
Parameters
high-threshold high-value: Specifies the upper threshold for output error packet alarms, in the range of 1 to 4294967295 packets.
low-threshold low-value: Specifies the lower threshold for output error packet alarms, in the range of 1 to 4294967295 packets.
interval interval: Specifies the statistics collection and comparison interval for output error packets, in the range of 1 to 65535 seconds.
shutdown: Shuts down an interface when the number of output error packets on the interface exceeds the upper threshold. Then, the interface stops forwarding all packets. To recover the interface, execute the undo shutdown command on the interface. If you do not specify this keyword, an upper threshold exceeding alarm is generated and the interface enters the alarm state when the number of output error packets exceeds the upper threshold on the interface.
slot slot-number: Specifies the slot number of the device, which is fixed at 1.
Usage guidelines
With the output error packet alarm function enabled, when the number of output error packets on an interface in normal state within the specified interval exceeds the upper threshold, the interface generates an upper threshold exceeding alarm and enters the alarm state. When the number of output error packets on an interface in the alarm state within the specified interval drops below the lower threshold, the interface generates a recovery alarm and restores to the normal state.
You can configure the output error packet alarm parameters in system view and interface view.
· The configuration in system view takes effect on all interfaces of the specified slot. The configuration in interface view takes effect only on the current interface.
· For an interface, the configuration in interface view takes priority, and the configuration in system view is used only when no configuration is made in interface view.
When you execute this command multiple times, the most recent configuration takes effect.
Examples
# Set the upper threshold to 5000, lower threshold to 400, and statistics collection and comparison interval to 6 seconds for output error packet alarms.
<Sysname> system-view
[Sysname] ifmonitor output-error high-threshold 5000 low-threshold 400 interval 6
Related commands
snmp-agent trap enable ifmonitor
ifmonitor output-usage
Use ifmonitor output-usage to configure global output bandwidth usage alarm parameters.
Use undo ifmonitor output-usage to restore the default.
Syntax
ifmonitor output-usage slot slot-number high-threshold high-value low-threshold low-value
undo ifmonitor output-usage slot slot-number
Default
The upper threshold is 90, and the lower threshold is 80.
Views
System view
Predefined user roles
network-admin
Parameters
high-threshold high-value: Specifies the upper threshold for output bandwidth usage alarms, in the range of 1 to 100.
low-threshold low-value: Specifies the lower threshold for output bandwidth usage alarms, in the range of 1 to 100.
slot slot-number: Specifies the slot number of the device, which is fixed at 1.
Usage guidelines
With the output bandwidth usage alarm function enabled, when the output bandwidth usage on an interface in normal state within the most recent statistics polling interval exceeds the upper threshold, the interface generates an upper threshold exceeding alarm and enters the alarm state. When the output bandwidth usage on an interface in the alarm state within the most recent statistics polling interval drops below the lower threshold, the interface generates a recovery alarm and restores to the normal state.
You can use the flow-interval command to set the statistics polling interval.
You can configure the output bandwidth usage alarm parameters in system view and interface view.
· The configuration in system view takes effect on all interfaces of the specified slot. The configuration in interface view takes effect only on the current interface.
· For an interface, the configuration in interface view takes priority, and the configuration in system view is used only when no configuration is made in interface view.
For this command to take effect, you must use the snmp-agent trap enable ifmonitor command to enable the output bandwidth usage alarm function.
When you execute this command multiple times, the most recent configuration takes effect.
Examples
# Set the upper threshold to 95 and lower threshold to 80 for output bandwidth usage alarms.
<Sysname> system-view
[Sysname] ifmonitor output-usage high-threshold 95 low-threshold 80
Related commands
flow-interval
snmp-agent trap enable ifmonitor
ifmonitor rx-pause
Use ifmonitor rx-pause to configure global received pause frame alarm parameters.
Use undo ifmonitor rx-pause to restore the default.
Syntax
ifmonitor rx-pause slot slot-number high-threshold high-value low-threshold low-value interval interval
undo ifmonitor rx-pause slot slot-number
Default
The upper threshold is 500, the lower threshold is 100, and the statistics collection and comparison interval is 10 seconds for received pause frame alarms.
Views
System view
Predefined user roles
network-admin
Parameters
high-threshold high-value: Specifies the upper threshold for received pause frame alarms, in the range of 1 to 4294967295 packets.
low-threshold low-value: Specifies the lower threshold for received pause frame alarms, in the range of 1 to 4294967295 packets.
interval interval: Specifies the statistics collection and comparison interval for received pause frames, in the range of 1 to 65535 seconds.
slot slot-number: Specifies the slot number of the device, which is fixed at 1.
Usage guidelines
With the received pause frame alarm function enabled, when the number of received pause frames on an interface in normal state within the specified interval exceeds the upper threshold, the interface generates an upper threshold exceeding alarm and enters the alarm state. When the number of received pause frames on an interface in the alarm state within the specified interval drops below the lower threshold, the interface generates a recovery alarm and restores to the normal state.
You can configure the received pause frame alarm parameters in system view and interface view.
· The configuration in system view takes effect on all interfaces of the specified slot. The configuration in interface view takes effect only on the current interface.
· For an interface, the configuration in interface view takes priority, and the configuration in system view is used only when no configuration is made in interface view.
For this command to take effect, you must use the snmp-agent trap enable ifmonitor command to enable the received pause frame alarm function.
When you execute this command multiple times, the most recent configuration takes effect.
Examples
# Set the upper threshold to 30, lower threshold to 20, and statistics collection and comparison interval to 4 seconds for received pause frame alarms.
<Sysname> system-view
[Sysname] ifmonitor rx-pause high-threshold 30 low-threshold 20 interval 4
Related commands
snmp-agent trap enable ifmonitor
ifmonitor sdh-b1-error
Use ifmonitor sdh-b1-error to configure global SDH-B1 error packet alarm parameters.
Use undo ifmonitor sdh-b1-error to restore the default.
Syntax
ifmonitor sdh-b1-error slot slot-number high-threshold high-value low-threshold low-value interval interval [ shutdown ]
undo ifmonitor sdh-b1-error slot slot-number
Default
The upper threshold is 1000, the lower threshold is 100, and the statistics collection and comparison interval is 10 seconds for SDH-B1 error packet alarms.
Views
System view
Predefined user roles
network-admin
Parameters
high-threshold high-value: Specifies the upper threshold for SDH-B1 error packet alarms, in the range of 1 to 4294967295 packets.
low-threshold low-value: Specifies the lower threshold for SDH-B1 error packet alarms, in the range of 1 to 4294967295 packets.
interval interval: Specifies the statistics collection and comparison interval for SDH-B1 error packets, in the range of 1 to 65535 seconds.
shutdown: Shuts down an interface when the number of incoming SDH-B1 error packets on the interface exceeds the upper threshold. Then, the interface stops forwarding all packets. To recover the interface, execute the undo shutdown command on the interface. If you do not specify this keyword, an upper threshold exceeding alarm is generated and the interface enters the alarm state when the number of incoming SDH-B1 error packets exceeds the upper threshold on the interface.
slot slot-number: Specifies the slot number of the device, which is fixed at 1.
Usage guidelines
With the SDH-B1 error packet alarm function enabled, when the number of incoming SDH-B1 error packets on an interface in normal state within the specified interval exceeds the upper threshold, the interface generates an upper threshold exceeding alarm and enters the alarm state. When the number of incoming SDH-B1 error packets on an interface in the alarm state within the specified interval drops below the lower threshold, the interface generates a recovery alarm and restores to the normal state.
You can configure the SDH-B1 error packet alarm parameters in system view and interface view.
· The configuration in system view takes effect on all interfaces of the specified slot. The configuration in interface view takes effect only on the current interface.
· For an interface, the configuration in interface view takes priority, and the configuration in system view is used only when no configuration is made in interface view.
For this command to take effect, you must use the snmp-agent trap enable ifmonitor command to enable the SDH-B1 error packet alarm function.
When you execute this command multiple times, the most recent configuration takes effect.
Examples
# Set the upper threshold to 65, lower threshold to 25, and statistics collection and comparison interval to 20 seconds for SDH-B1 error packet alarms.
<Sysname> system-view
[Sysname] ifmonitor sdh-b1-error high-threshold 65 low-threshold 25 interval 20
Related commands
snmp-agent trap enable ifmonitor
ifmonitor sdh-b2-error
Use ifmonitor sdh-b2-error to configure global SDH-B2 error packet alarm parameters.
Use undo ifmonitor sdh-b2-error to restore the default.
Syntax
ifmonitor sdh-b2-error slot slot-number high-threshold high-value low-threshold low-value interval interval [ shutdown ]
undo ifmonitor sdh-b2-error slot slot-number
Default
The upper threshold is 1000, the lower threshold is 100, and the statistics collection and comparison interval is 10 seconds for SDH-B2 error packet alarms.
Views
System view
Predefined user roles
network-admin
Parameters
high-threshold high-value: Specifies the upper threshold for SDH-B2 error packet alarms, in the range of 1 to 4294967295 packets.
low-threshold low-value: Specifies the lower threshold for SDH-B2 error packet alarms, in the range of 1 to 4294967295 packets.
interval interval: Specifies the statistics collection and comparison interval for SDH-B2 error packets, in the range of 1 to 65535 seconds.
shutdown: Shuts down an interface when the number of incoming SDH-B2 error packets on the interface exceeds the upper threshold. Then, the interface stops forwarding all packets. To recover the interface, execute the undo shutdown command on the interface. If you do not specify this keyword, an upper threshold exceeding alarm is generated and the interface enters the alarm state when the number of incoming SDH-B2 error packets exceeds the upper threshold on the interface.
slot slot-number: Specifies the slot number of the device, which is fixed at 1.
Usage guidelines
With the SDH-B2 error packet alarm function enabled, when the number of incoming SDH-B2 error packets on an interface in normal state within the specified interval exceeds the upper threshold, the interface generates an upper threshold exceeding alarm and enters the alarm state. When the number of incoming SDH-B2 error packets on an interface in the alarm state within the specified interval drops below the lower threshold, the interface generates a recovery alarm and restores to the normal state.
You can configure the SDH-B2 error packet alarm parameters in system view and interface view.
· The configuration in system view takes effect on all interfaces of the specified slot. The configuration in interface view takes effect only on the current interface.
· For an interface, the configuration in interface view takes priority, and the configuration in system view is used only when no configuration is made in interface view.
For this command to take effect, you must use the snmp-agent trap enable ifmonitor command to enable the SDH-B2 error packet alarm function.
When you execute this command multiple times, the most recent configuration takes effect.
Examples
# Set the upper threshold to 6, lower threshold to 5, and statistics collection and comparison interval to 2 seconds for SDH-B2 error packet alarms.
<Sysname> system-view
[Sysname] ifmonitor sdh-b2-error high-threshold 6 low-threshold 5 interval 2
Related commands
snmp-agent trap enable ifmonitor
ifmonitor sdh-error
Use ifmonitor sdh-error to configure global SDH error packet alarm parameters.
Use undo ifmonitor sdh-error to restore the default.
Syntax
ifmonitor sdh-error slot slot-number high-threshold high-value low-threshold low-value interval interval [ shutdown ]
undo ifmonitor sdh-error slot slot-number
Default
The upper threshold is 1000, the lower threshold is 100, and the statistics collection and comparison interval is 10 seconds for SDH error packet alarms.
Views
System view
Predefined user roles
network-admin
Parameters
high-threshold high-value: Specifies the upper threshold for SDH error packet alarms, in the range of 1 to 4294967295 packets.
low-threshold low-value: Specifies the lower threshold for SDH error packet alarms, in the range of 1 to 4294967295 packets.
interval interval: Specifies the statistics collection and comparison interval for SDH error packets, in the range of 1 to 65535 seconds.
shutdown: Shuts down an interface when the number of incoming SDH error packets on the interface exceeds the upper threshold. Then, the interface stops forwarding all packets. To recover the interface, execute the undo shutdown command on the interface. If you do not specify this keyword, an upper threshold exceeding alarm is generated and the interface enters the alarm state when the number of incoming SDH error packets exceeds the upper threshold on the interface.
slot slot-number: Specifies the slot number of the device, which is fixed at 1.
Usage guidelines
With the SDH error packet alarm function enabled, when the number of incoming SDH error packets on an interface in normal state within the specified interval exceeds the upper threshold, the interface generates an upper threshold exceeding alarm and enters the alarm state. When the number of incoming SDH error packets on an interface in the alarm state within the specified interval drops below the lower threshold, the interface generates a recovery alarm and restores to the normal state.
You can configure the SDH error packet alarm parameters in system view and interface view.
· The configuration in system view takes effect on all interfaces of the specified slot. The configuration in interface view takes effect only on the current interface.
· For an interface, the configuration in interface view takes priority, and the configuration in system view is used only when no configuration is made in interface view.
For this command to take effect, you must use the snmp-agent trap enable ifmonitor command to enable the SDH error packet alarm function.
When you execute this command multiple times, the most recent configuration takes effect.
Examples
# Set the upper threshold to 35, lower threshold to 20, and statistics collection and comparison interval to 8 seconds for SDH error packet alarms.
<Sysname> system-view
[Sysname] ifmonitor sdh-error high-threshold 35 low-threshold 20 interval 8
Related commands
snmp-agent trap enable ifmonitor
ifmonitor tx-pause
Use ifmonitor tx-pause to configure global sent pause frame alarm parameters.
Use undo ifmonitor tx-pause to restore the default.
Syntax
ifmonitor tx-pause slot slot-number high-threshold high-value low-threshold low-value interval interval
undo ifmonitor tx-pause slot slot-number
Default
The upper threshold is 500, the lower threshold is 100, and the statistics collection and comparison interval is 10 seconds for sent pause frame alarms.
Views
System view
Predefined user roles
network-admin
Parameters
high-threshold high-value: Specifies the upper threshold for sent pause frame alarms, in the range of 1 to 4294967295 packets.
low-threshold low-value: Specifies the lower threshold for sent pause frame alarms, in the range of 1 to 4294967295 packets.
interval interval: Specifies the statistics collection and comparison interval for sent pause frames, in the range of 1 to 65535 seconds.
slot slot-number: Specifies the slot number of the device, which is fixed at 1.
Usage guidelines
With the sent pause frame alarm function enabled, when the number of sent pause frames on an interface in normal state within the specified interval exceeds the upper threshold, the interface generates an upper threshold exceeding alarm and enters the alarm state. When the number of sent pause frames on an interface in the alarm state within the specified interval drops below the lower threshold, the interface generates a recovery alarm and restores to the normal state.
You can configure the sent pause frame alarm parameters in system view and interface view.
· The configuration in system view takes effect on all interfaces of the specified slot. The configuration in interface view takes effect only on the current interface.
· For an interface, the configuration in interface view takes priority, and the configuration in system view is used only when no configuration is made in interface view.
For this command to take effect, you must use the snmp-agent trap enable ifmonitor command to enable the sent pause frame alarm function.
When you execute this command multiple times, the most recent configuration takes effect.
Examples
# Set the upper threshold to 20, lower threshold to 10, and statistics collection and comparison interval to 5 seconds for sent pause frame alarms.
<Sysname> system-view
[Sysname] ifmonitor tx-pause high-threshold 20 low-threshold 10 interval 5
Related commands
snmp-agent trap enable ifmonitor
interface
Use interface to enter interface view, create a subinterface and enter its view, or enter the view of an existing subinterface.
Syntax
interface interface-type { interface-number | interface-number.subnumber }
Views
System view
Predefined user roles
network-admin
Parameters
interface-type: Specifies an interface type.
interface-number: Specifies an interface number.
interface-number.subnumber: Specifies a subinterface number. The interface-number argument is an interface number. The subnumber argument is the number of a subinterface created under the interface. The value range for the subnumber argument is 1 to 4094.
Examples
# Enter the view of HundredGigE 1/0/1.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1]
# Create Ethernet subinterface HundredGigE 1/0/1.1 and enter its view.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1.1
[Sysname-HundredGigE1/0/1.1]
jumboframe enable
Use jumboframe enable to allow jumbo frames within the specified length to pass through.
Use undo jumboframe enable to prevent jumbo frames from passing through.
Use undo jumboframe enable size to restore the default.
Syntax
jumboframe enable [ size ]
undo jumboframe enable [ size ]
Default
The device allows jumbo frames within 9964 bytes to pass through.
Views
Layer 2 Ethernet interface view
Layer 3 Ethernet interface view
Predefined user roles
network-admin
Parameters
size: Sets the maximum length (in bytes) of Ethernet frames that are allowed to pass through. The value range for this argument is 1536 to 9964.
Usage guidelines
If you execute this command multiple times, the most recent configuration takes effect.
Examples
# Allow jumbo frames to pass through HundredGigE 1/0/1.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] jumboframe enable
link fast-recover
Use link fast-recover to enable fast recovering for Ethernet interfaces.
Use undo link fast-recover to restore the default.
Syntax
link fast-recover
undo link fast-recover
Default
Fast recovering is disabled for Ethernet interfaces.
Views
System view
Ethernet interface view
Predefined user roles
network-admin
Usage guidelines
With this feature configured, the system enables fast recovering for an Ethernet interface when the interface status changes from UP to DOWN and recovers the interface quickly by reducing the negotiation time.
You can enable fast recovering for an Ethernet interface in both system view and Ethernet interface view. The configuration in system view applies to all Ethernet interfaces, and the configuration in Ethernet interface applies only to the current interface. For an Ethernet interface, the configuration in Ethernet interface view takes precedence. The configuration in system view applies only if no configuration is made in Ethernet interface view.
Examples
# Enable fast recovering for Ethernet interfaces globally.
<sysname> system-view
[sysname] link fast-recover
This operation will cause all Ethernet interfaces to flap once. Continue? [Y/N]:y
link-delay
Use link-delay to set the physical state change suppression interval on an Ethernet interface.
Use undo link-delay to restore the default.
Syntax
link-delay { down | up } [ msec ] delay-time
undo link-delay { down | up }
Default
Physical state change suppression is disabled.
Views
Ethernet interface view
Predefined user roles
network-admin
Parameters
down: Suppresses link-down events.
up: Suppresses link-up events.
msec: Enables the physical state change suppression interval to be accurate to milliseconds. If you do not specify this keyword, the suppression interval is accurate to seconds.
delay-time: Sets the physical state change suppression interval on the Ethernet interface. A value of 0 means that physical state changes are immediately reported to the CPU and are not suppressed.
· If you do not specify the msec keyword, the value range is 0 to 30 seconds.
· If you specify the msec keyword, the value range is 0 to 10000 milliseconds, and the value must be a multiple of 100.
Usage guidelines
You can configure this feature to suppress only link-down events, only link-up events, or both events. If an event of the specified type still exists when the suppression interval expires, the system reports the event.
When you configure this feature, follow these guidelines:
· To suppress link-down events, execute the link-delay down command.
· To suppress link-up events, execute the link-delay up command.
On an interface, you can configure different suppression intervals for link-up and link-down events. If you execute the link-delay command multiple times on an interface, the following rules apply:
· You can configure the suppression intervals for link-up and link-down events separately.
· If you configure the suppression interval multiple times for link-up or link-down events, the most recent configuration takes effect.
Do not execute this command on an interface that has spanning tree protocols or Smart Link enabled.
This command and the port link-flap protect enable command are mutually exclusive on an Ethernet interface.
Examples
# Set the link-down event suppression interval to 8 seconds on HundredGigE 1/0/1.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] link-delay down 8
# Set the link-up event suppression interval to 800 milliseconds on HundredGigE 1/0/1.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] link-delay up msec 800
Related commands
port link-flap protect enable
link-flap protect enable
Use link-flap protect enable to enable link flapping protection globally.
Use undo link-flap protect enable to disable link flapping protection globally.
Syntax
link-flap protect enable [ batch [ interval interval | threshold threshold ] * ]
undo link-flap protect enable [ batch [ interval | threshold ] ]
Default
Link flapping protection is disabled globally.
Views
System view
Predefined user roles
network-admin
Parameters
batch: Enables link flapping protection both globally and on all interfaces, and sets the default link flapping detection interval and link flapping detection threshold. If you do not specify this keyword, this command enables link flapping protection only globally.
interval interval: Specifies the link flapping detection interval in seconds. The value range for this argument is 5 to 86400. The default value for this argument is 10.
threshold threshold: Specifies the link flapping detection threshold in the range of 2 to 1200. The default value for this argument is 5.
Usage guidelines
Link flapping on any interface changes network topology and increases the system overhead. For example, in an active/standby link scenario, when the interface status on the active link changes between UP and DOWN, traffic switches between active and standby links. To solve this problem, execute this command.
With link flapping protection enabled on an interface, when the interface goes down, the system enables link flapping detection on the interface. During the link flapping detection interval, if the number of detected flaps reaches or exceeds the link flapping detection threshold, the system shuts down the interface.
Link flapping protection takes effect only when it is enabled in both the system view and interface view.
Any of the following operations can enable link flapping protection:
· Execute the link-flap protect enable batch command in system view, and do not configure link flapping protection on interfaces.
· Execute the link-flap protect enable batch command in system view, and execute the port link-flap protect enable command in interface view.
· Execute the link-flap protect enable command in system view, and execute the port link-flap protect enable command in interface view.
The undo link-flap protect enable command works different depending on the keywords specified as follows:
· If the batch keyword is not specified, this command disables link flapping protection globally.
· If the batch keyword is specified but the interval or threshold keyword is not specified, this command restores the default for the interval and threshold keywords.
· If the interval or threshold keyword is specified, this command restores the default for the interval or threshold keyword.
If the link-delay or dampening command is already configured for an interface, the link-delay or dampening command applies on that interface when you execute the link-flap protect enable batch command.
Examples
# Enable link flapping protection on all interfaces.
<Sysname> system-view
[Sysname] link-flap protect enable
Related commands
port link-flap protect enable
loopback
CAUTION: After you enable loopback testing on an Ethernet interface, the interface does not forward data traffic. |
Use loopback to enable loopback testing on an Ethernet interface.
Use undo loopback to disable loopback testing on an Ethernet interface.
Syntax
loopback internal
undo loopback
Default
Loopback testing is disabled on an Ethernet interface.
Views
Ethernet interface view
Predefined user roles
network-admin
Parameters
internal: Enables internal loopback testing on the Ethernet interface.
Usage guidelines
After you enable loopback testing on an Ethernet interface, the Ethernet interface switches to full duplex mode. After you disable loopback testing, the Ethernet interface restores to its duplex setting.
The shutdown, port up-mode, and loopback commands are mutually exclusive.
Examples
# Enable internal loopback testing on HundredGigE 1/0/1.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] loopback internal
multicast-suppression
Use multicast-suppression to enable multicast storm suppression and set the multicast storm suppression threshold.
Use undo multicast-suppression to disable multicast storm suppression.
Syntax
multicast-suppression { ratio | pps max-pps | kbps max-kbps }
undo multicast-suppression
Default
Ethernet interfaces do not suppress multicast traffic.
Views
Ethernet interface view
Predefined user roles
network-admin
Parameters
ratio: Sets the multicast suppression threshold as a percentage of the interface bandwidth. The value range for this argument (in percentage) is 0 to 100. A smaller value means that less multicast traffic is allowed to pass through.
pps max-pps: Specifies the maximum number of multicast packets that the interface can forward per second. The value range for the max-pps argument (in pps) is 0 to 1.4881 × the interface bandwidth.
kbps max-kbps: Specifies the maximum number of kilobits of multicast traffic that the Ethernet interface can forward per second. The value range for this argument (in kbps) is 0 to the interface bandwidth.
Usage guidelines
The multicast storm suppression feature limits the size of multicast traffic to a threshold on an interface. When the multicast traffic on the interface exceeds this threshold, the system drops packets until the traffic drops below this threshold.
Both the storm-constrain command and the multicast-suppression command can suppress multicast storms on a port. The multicast-suppression command uses the chip to physically suppress multicast traffic. It has less influence on the device performance than the storm-constrain command, which uses software to suppress multicast traffic.
For the traffic suppression result to be determined, do not configure both the storm-constrain multicast command and the multicast-suppression command on an interface.
Examples
# Set the multicast storm suppression threshold to 10000 kbps on HundredGigE 1/0/1.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] multicast-suppression kbps 10000
Related commands
broadcast-suppression
unicast-suppression
port fec bypass enable
Use port fec bypass enable to enable FEC bypass.
Use undo port fec bypass enable to disable FEC bypass.
Syntax
port fec bypass enable
undo port fec bypass enable
Default
FEC bypass is disabled.
Views
Ethernet interface view
Predefined user roles
network-admin
Usage guidelines
This command is supported only on 25-GE, 40-GE, and 100-GE interfaces.
By default, when an interface continuously receives three or more packets that it cannot process, the device will shut down and then bring up the interface to fix the interface. However, there are many possible packet error reasons. If you are sure that the interface is not faulty, you do not need to fix the interface. To avoid service interruption in this case, you can enable this feature on the interface to prevent the device from shutting down and bringing up the interface.
Examples
# Enable FEC Bypass.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] port fec bypass enable
port fec mode
Use port fec mode to set the forward error correction (FEC) mode of an interface.
Use undo port fec mode to restore the default.
Syntax
port fec mode { auto | base-r | none | rs-fec }
undo port fec mode
Default
The FEC of an interface is in autonegotiation mode.
Views
25-GE interface view
100-GE interface view
200-GE interface view
Predefined user roles
network-admin
Parameters
auto: Specifies the FEC autonegotiation mode.
base-r: Specifies the BASE-R FEC mode. 100-GE interfaces do not support this keyword.
none: Performs no FEC.
rs-fec: Specifies the RS-FEC mode.
Usage guidelines
The FEC feature corrects packet errors to improve transmission quality. It attaches correction information to a packet at the sending end, and corrects error codes generated during transmission at the receiving end based on the correction information. You can set the FEC mode as needed.
Make sure you set the same FEC mode for both interfaces of a link.
Examples
# Set the FEC mode of Twenty-FiveGigE 1/0/1 to autonegotiation.
<Sysname> system-view
[Sysname] interface twenty-fivegige 1/0/1
[Sysname-Twenty-FiveGigE1/0/1] port fec mode auto
# Set the FEC mode of HundredGigE 1/0/1 to autonegotiation.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] port fec mode auto
port ifmonitor crc-error
Use port ifmonitor crc-error to configure CRC error packet alarm parameters for an interface.
Use undo port ifmonitor crc-error to restore the default.
Syntax
port ifmonitor crc-error [ ratio ] high-threshold high-value low-threshold low-value interval interval [ shutdown ]
undo port ifmonitor crc-error
Default
An interface uses the global CRC error packet alarm parameters.
Views
Ethernet interface view
Predefined user roles
network-admin
Parameters
ratio: Specifies the alarm thresholds in percentage. If you do not specify this keyword, you configure the alarm thresholds in absolute value.
high-threshold high-value: Specifies the upper threshold for CRC error packet alarms. If you specify the ratio keyword, the value range is 1 to 100. If you do not specify the ratio keyword, the value range is 1 to 4294967295 packets.
low-threshold low-value: Specifies the lower threshold for CRC error packet alarms. If you specify the ratio keyword, the value range is 1 to 100. If you do not specify the ratio keyword, the value range is 1 to 4294967295 packets.
interval interval: Specifies the statistics collection and comparison interval for CRC error packets, in the range of 1 to 65535 seconds.
shutdown: Shuts down an interface when the number of incoming CRC error packets on the interface exceeds the upper threshold. Then, the interface stops forwarding all packets. To recover the interface, execute the undo shutdown command on the interface. If you do not specify this keyword, an upper threshold exceeding alarm is generated and the interface enters the alarm state when the number of incoming CRC error packets exceeds the upper threshold on the interface.
Usage guidelines
With the CRC error packet alarm function enabled, when the number of incoming CRC error packets on an interface in normal state within the specified interval exceeds the upper threshold, the interface generates an upper threshold exceeding alarm and enters the alarm state. When the number of incoming CRC error packets on an interface in the alarm state within the specified interval drops below the lower threshold, the interface generates a recovery alarm and restores to the normal state.
You can configure the CRC error packet alarm parameters in system view and interface view.
· The configuration in system view takes effect on all interfaces of the specified slot. The configuration in interface view takes effect only on the current interface.
· For an interface, the configuration in interface view takes priority, and the configuration in system view is used only when no configuration is made in interface view.
When you execute this command multiple times, the most recent configuration takes effect.
Examples
# Set the upper threshold to 5000, lower threshold to 400, and statistics collection and comparison interval to 6 seconds for CRC error packet alarms on GigabitEthernet 1/0/1.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[Sysname-GigabitEthernet1/0/1] port ifmonitor crc-error high-threshold 5000 low-threshold 400 interval 6
Related commands
snmp-agent trap enable ifmonitor
port ifmonitor input-error
Use port ifmonitor input-error to configure input error packet alarm parameters for an interface.
Use undo port ifmonitor input-error to restore the default.
Syntax
port ifmonitor input-error high-threshold high-value low-threshold low-value interval interval [ shutdown ]
undo port ifmonitor input-error
Default
An interface uses the global input error packet alarm parameters.
Views
Ethernet interface view
Predefined user roles
network-admin
Parameters
high-threshold high-value: Specifies the upper threshold for input error packet alarms, in the range of 1 to 4294967295 packets.
low-threshold low-value: Specifies the lower threshold for input error packet alarms, in the range of 1 to 4294967295 packets.
interval interval: Specifies the statistics collection and comparison interval for input error packets, in the range of 1 to 65535 seconds.
shutdown: Shuts down an interface when the number of input error packets on the interface exceeds the upper threshold. Then, the interface stops forwarding all packets. To recover the interface, execute the undo shutdown command on the interface. If you do not specify this keyword, an upper threshold exceeding alarm is generated and the interface enters the alarm state when the number of input error packets exceeds the upper threshold on the interface.
Usage guidelines
With the input error packet alarm function enabled, when the number of input error packets on an interface in normal state within the specified interval exceeds the upper threshold, the interface generates an upper threshold exceeding alarm and enters the alarm state. When the number of input error packets on an interface in the alarm state within the specified interval drops below the lower threshold, the interface generates a recovery alarm and restores to the normal state.
You can configure the input error packet alarm parameters in system view and interface view.
· The configuration in system view takes effect on all interfaces of the specified slot. The configuration in interface view takes effect only on the current interface.
· For an interface, the configuration in interface view takes priority, and the configuration in system view is used only when no configuration is made in interface view.
When you execute this command multiple times, the most recent configuration takes effect.
Examples
# Set the upper threshold to 5000, lower threshold to 400, and statistics collection and comparison interval to 6 seconds for input error packet alarms on GigabitEthernet 1/0/1.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[Sysname-GigabitEthernet1/0/1] port ifmonitor input-error high-threshold 5000 low-threshold 400 interval 6
Related commands
snmp-agent trap enable ifmonitor
port ifmonitor input-usage
Use port ifmonitor input-usage to configure input bandwidth usage alarm parameters.
Use undo port ifmonitor input-usage to restore the default.
Syntax
port ifmonitor input-usage high-threshold high-value low-threshold low-value
undo port ifmonitor input-usage
Default
An interface uses the global input bandwidth usage alarm parameters.
Views
Interface view
Predefined user roles
network-admin
Parameters
high-threshold high-value: Specifies the upper threshold for input bandwidth usage alarms, in the range of 1 to 100.
low-threshold low-value: Specifies the lower threshold for input bandwidth usage alarms, in the range of 1 to 100.
Usage guidelines
With the input bandwidth usage alarm function enabled, when the input bandwidth usage on an interface in normal state within the most recent statistics polling interval exceeds the upper threshold, the interface generates an upper threshold exceeding alarm and enters the alarm state. When the input bandwidth usage on an interface in the alarm state within the most recent statistics polling interval drops below the lower threshold, the interface generates a recovery alarm and restores to the normal state.
You can use the flow-interval command to set the statistics polling interval.
You can configure the input bandwidth usage alarm parameters in system view and interface view.
· The configuration in system view takes effect on all interfaces of the specified slot. The configuration in interface view takes effect only on the current interface.
· For an interface, the configuration in interface view takes priority, and the configuration in system view is used only when no configuration is made in interface view.
For this command to take effect, you must use the snmp-agent trap enable ifmonitor command to enable the input bandwidth usage alarm function.
When you execute this command multiple times, the most recent configuration takes effect.
Examples
# Set the upper threshold to 80 and lower threshold to 60 for input bandwidth usage alarms on HundredGigE 1/0/1.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] port ifmonitor input-usage high-threshold 80 low-threshold 60
Related commands
flow-interval
snmp-agent trap enable ifmonitor
port ifmonitor output-error
Use port ifmonitor output-error to configure output error packet alarm parameters for an interface.
Use undo port ifmonitor output-error to restore the default.
Syntax
port ifmonitor output-error high-threshold high-value low-threshold low-value interval interval [ shutdown ]
undo port ifmonitor output-error
Default
An interface uses the global output error packet alarm parameters.
Views
Ethernet interface view
Predefined user roles
network-admin
Parameters
high-threshold high-value: Specifies the upper threshold for output error packet alarms, in the range of 1 to 4294967295 packets.
low-threshold low-value: Specifies the lower threshold for output error packet alarms, in the range of 1 to 4294967295 packets.
interval interval: Specifies the statistics collection and comparison interval for output error packets, in the range of 1 to 65535 seconds.
shutdown: Shuts down an interface when the number of output error packets on the interface exceeds the upper threshold. Then, the interface stops forwarding all packets. To recover the interface, execute the undo shutdown command on the interface. If you do not specify this keyword, an upper threshold exceeding alarm is generated and the interface enters the alarm state when the number of output error packets exceeds the upper threshold on the interface.
Usage guidelines
With the output error packet alarm function enabled, when the number of output error packets on an interface in normal state within the specified interval exceeds the upper threshold, the interface generates an upper threshold exceeding alarm and enters the alarm state. When the number of output error packets on an interface in the alarm state within the specified interval drops below the lower threshold, the interface generates a recovery alarm and restores to the normal state.
You can configure the output error packet alarm parameters in system view and interface view.
· The configuration in system view takes effect on all interfaces of the specified slot. The configuration in interface view takes effect only on the current interface.
· For an interface, the configuration in interface view takes priority, and the configuration in system view is used only when no configuration is made in interface view.
When you execute this command multiple times, the most recent configuration takes effect.
Examples
# Set the upper threshold to 5000, lower threshold to 400, and statistics collection and comparison interval to 6 seconds for output error packet alarms on GigabitEthernet 1/0/1.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[Sysname-GigabitEthernet1/0/1] port ifmonitor output-error high-threshold 5000 low-threshold 400 interval 6
Related commands
snmp-agent trap enable ifmonitor
port ifmonitor output-usage
Use port ifmonitor output-usage to configure output bandwidth usage alarm parameters.
Use undo port ifmonitor output-usage to restore the default.
Syntax
port ifmonitor output-usage high-threshold high-value low-threshold low-value
undo port ifmonitor output-usage
Default
An interface uses the global output bandwidth usage alarm parameters.
Views
Interface view
Predefined user roles
network-admin
Parameters
high-threshold high-value: Specifies the upper threshold for output bandwidth usage alarms, in the range of 1 to 100.
low-threshold low-value: Specifies the lower threshold for output bandwidth usage alarms, in the range of 1 to 100.
Usage guidelines
With the output bandwidth usage alarm function enabled, when the output bandwidth usage on an interface in normal state within the most recent statistics polling interval exceeds the upper threshold, the interface generates an upper threshold exceeding alarm and enters the alarm state. When the output bandwidth usage on an interface in the alarm state within the most recent statistics polling interval drops below the lower threshold, the interface generates a recovery alarm and restores to the normal state.
You can use the flow-interval command to set the statistics polling interval.
You can configure the output bandwidth usage alarm parameters in system view and interface view.
· The configuration in system view takes effect on all interfaces of the specified slot. The configuration in interface view takes effect only on the current interface.
· For an interface, the configuration in interface view takes priority, and the configuration in system view is used only when no configuration is made in interface view.
For this command to take effect, you must use the snmp-agent trap enable ifmonitor command to enable the output bandwidth usage alarm function.
When you execute this command multiple times, the most recent configuration takes effect.
Examples
# Set the upper threshold to 9 and lower threshold to 7 for output bandwidth usage alarms on HundredGigE 1/0/1.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] port ifmonitor output-usage high-threshold 9 low-threshold 7
Related commands
flow-interval
snmp-agent trap enable ifmonitor
port ifmonitor rx-pause
Use port ifmonitor rx-pause to configure received pause frame alarm parameters for an interface.
Use undo port ifmonitor rx-pause to restore the default.
Syntax
port ifmonitor rx-pause high-threshold high-value low-threshold low-value interval interval
undo port ifmonitor rx-pause
Default
An interface uses the global received pause frame alarm parameters.
Views
Ethernet interface view
Predefined user roles
network-admin
Parameters
high-threshold high-value: Specifies the upper threshold for received pause frame alarms, in the range of 1 to 4294967295.
low-threshold low-value: Specifies the lower threshold for received pause frame alarms, in the range of 1 to 4294967295.
interval interval: Specifies the statistics collection and comparison interval for received pause frame packets, in the range of 1 to 65535 seconds.
Usage guidelines
With the received pause frame alarm function enabled, when the number of received pause frame packets on an interface in normal state within the specified interval exceeds the upper threshold, the interface generates an upper threshold exceeding alarm and enters the alarm state. When the number of received pause frame packets on an interface in the alarm state within the specified interval drops below the lower threshold, the interface generates a recovery alarm and restores to the normal state.
You can configure the received pause frame alarm parameters in system view and interface view.
· The configuration in system view takes effect on all interfaces of the specified slot. The configuration in interface view takes effect only on the current interface.
· For an interface, the configuration in interface view takes priority, and the configuration in system view is used only when no configuration is made in interface view.
For this command to take effect, you must use the snmp-agent trap enable ifmonitor command to enable the received pause frame alarm function.
When you execute this command multiple times, the most recent configuration takes effect.
Examples
# Set the upper threshold to 90, lower threshold to 50, and statistics collection and comparison interval to 5 seconds for received pause frame alarms on HundredGigE 1/0/1.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] port ifmonitor rx-pause high-threshold 90 low-threshold 50 interval 5
Related commands
snmp-agent trap enable ifmonitor
port ifmonitor sdh-b1-error
Use port ifmonitor sdh-b1-error to configure SDH-B1 error packet alarm parameters for an interface.
Use undo port ifmonitor sdh-b1-error to restore the default.
Syntax
port ifmonitor sdh-b1-error high-threshold high-value low-threshold low-value interval interval [ shutdown ]
undo port ifmonitor sdh-b1-error
Default
An interface uses the global SDH-B1 error packet alarm parameters.
Views
Ethernet interface view
Predefined user roles
network-admin
Parameters
high-threshold high-value: Specifies the upper threshold for SDH-B1 error packet alarms, in the range of 1 to 4294967295 packets.
low-threshold low-value: Specifies the lower threshold for SDH-B1 error packet alarms, in the range of 1 to 4294967295 packets.
interval interval: Specifies the statistics collection and comparison interval for SDH-B1 error packets, in the range of 1 to 65535 seconds.
shutdown: Shuts down an interface when the number of incoming SDH-B1 error packets on the interface exceeds the upper threshold. Then, the interface stops forwarding all packets. To recover the interface, execute the undo shutdown command on the interface. If you do not specify this keyword, an upper threshold exceeding alarm is generated and the interface enters the alarm state when the number of incoming SDH-B1 error packets exceeds the upper threshold on the interface.
Usage guidelines
With the SDH-B1 error packet alarm function enabled, when the number of incoming SDH-B1 error packets on an interface in normal state within the specified interval exceeds the upper threshold, the interface generates an upper threshold exceeding alarm and enters the alarm state. When the number of incoming SDH-B1 error packets on an interface in the alarm state within the specified interval drops below the lower threshold, the interface generates a recovery alarm and restores to the normal state.
You can configure the SDH-B1 error packet alarm parameters in system view and interface view.
· The configuration in system view takes effect on all interfaces of the specified slot. The configuration in interface view takes effect only on the current interface.
· For an interface, the configuration in interface view takes priority, and the configuration in system view is used only when no configuration is made in interface view.
For this command to take effect, you must use the snmp-agent trap enable ifmonitor command to enable the SDH-B1 error packet alarm function.
When you execute this command multiple times, the most recent configuration takes effect.
Examples
# Set the upper threshold to 20, lower threshold to 10, and statistics collection and comparison interval to 10 seconds for SDH-B1 error packet alarms on HundredGigE 1/0/1.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] port ifmonitor sdh-b1-error high-threshold 20 low-threshold 10 interval 10
Related commands
snmp-agent trap enable ifmonitor
port ifmonitor sdh-b2-error
Use port ifmonitor sdh-b2-error to configure SDH-B2 error packet alarm parameters for an interface.
Use undo port ifmonitor sdh-b2-error to restore the default.
Syntax
port ifmonitor sdh-b2-error high-threshold high-value low-threshold low-value interval interval [ shutdown ]
undo port ifmonitor sdh-b2-error
Default
An interface uses the global SDH-B2 error packet alarm parameters.
Views
Ethernet interface view
Predefined user roles
network-admin
Parameters
high-threshold high-value: Specifies the upper threshold for SDH-B2 error packet alarms, in the range of 1 to 4294967295 packets.
low-threshold low-value: Specifies the lower threshold for SDH-B2 error packet alarms, in the range of 1 to 4294967295 packets.
interval interval: Specifies the statistics collection and comparison interval for SDH-B2 error packets, in the range of 1 to 65535 seconds.
shutdown: Shuts down an interface when the number of incoming SDH-B2 error packets on the interface exceeds the upper threshold. Then, the interface stops forwarding all packets. To recover the interface, execute the undo shutdown command on the interface. If you do not specify this keyword, an upper threshold exceeding alarm is generated and the interface enters the alarm state when the number of incoming SDH-B2 error packets exceeds the upper threshold on the interface.
Usage guidelines
With the SDH-B2 error packet alarm function enabled, when the number of incoming SDH-B2 error packets on an interface in normal state within the specified interval exceeds the upper threshold, the interface generates an upper threshold exceeding alarm and enters the alarm state. When the number of incoming SDH-B2 error packets on an interface in the alarm state within the specified interval drops below the lower threshold, the interface generates a recovery alarm and restores to the normal state.
You can configure the SDH-B2 error packet alarm parameters in system view and interface view.
· The configuration in system view takes effect on all interfaces of the specified slot. The configuration in interface view takes effect only on the current interface.
· For an interface, the configuration in interface view takes priority, and the configuration in system view is used only when no configuration is made in interface view.
For this command to take effect, you must use the snmp-agent trap enable ifmonitor command to enable the SDH-B2 error packet alarm function.
When you execute this command multiple times, the most recent configuration takes effect.
Examples
# Set the upper threshold to 10, lower threshold to 8, and statistics collection and comparison interval to 3 seconds for SDH-B2 error packet alarms on HundredGigE 1/0/1.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] port ifmonitor sdh-b2-error high-threshold 10 low-threshold 8 interval 3
Related commands
snmp-agent trap enable ifmonitor
port ifmonitor sdh-error
Use port ifmonitor sdh-error to configure SDH error packet alarm parameters for an interface.
Use undo port ifmonitor sdh-error to restore the default.
Syntax
port ifmonitor sdh-error high-threshold high-value low-threshold low-value interval interval [ shutdown ]
undo port ifmonitor sdh-error
Default
An interface uses the global SDH error packet alarm parameters.
Views
Ethernet interface view
Predefined user roles
network-admin
Parameters
high-threshold high-value: Specifies the upper threshold for SDH error packet alarms, in the range of 1 to 4294967295 packets.
low-threshold low-value: Specifies the lower threshold for SDH error packet alarms, in the range of 1 to 4294967295 packets.
interval interval: Specifies the statistics collection and comparison interval for SDH error packets, in the range of 1 to 65535 seconds.
shutdown: Shuts down an interface when the number of incoming SDH error packets on the interface exceeds the upper threshold. Then, the interface stops forwarding all packets. To recover the interface, execute the undo shutdown command on the interface. If you do not specify this keyword, an upper threshold exceeding alarm is generated and the interface enters the alarm state when the number of incoming SDH error packets exceeds the upper threshold on the interface.
Usage guidelines
With the SDH error packet alarm function enabled, when the number of incoming SDH error packets on an interface in normal state within the specified interval exceeds the upper threshold, the interface generates an upper threshold exceeding alarm and enters the alarm state. When the number of incoming SDH error packets on an interface in the alarm state within the specified interval drops below the lower threshold, the interface generates a recovery alarm and restores to the normal state.
You can configure the SDH error packet alarm parameters in system view and interface view.
· The configuration in system view takes effect on all interfaces of the specified slot. The configuration in interface view takes effect only on the current interface.
· For an interface, the configuration in interface view takes priority, and the configuration in system view is used only when no configuration is made in interface view.
For this command to take effect, you must use the snmp-agent trap enable ifmonitor command to enable the SDH error packet alarm function.
When you execute this command multiple times, the most recent configuration takes effect.
Examples
# Set the upper threshold to 50, lower threshold to 30, and statistics collection and comparison interval to 10 seconds for SDH error packet alarms on HundredGigE 1/0/1.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] port ifmonitor sdh-error high-threshold 50 low-threshold 30 interval 10
Related commands
snmp-agent trap enable ifmonitor
port ifmonitor tx-pause
Use port ifmonitor tx-pause to configure sent pause frame alarm parameters for an interface.
Use undo port ifmonitor tx-pause to restore the default.
Syntax
port ifmonitor tx-pause high-threshold high-value low-threshold low-value interval interval
undo port ifmonitor tx-pause
Default
An interface uses the global sent pause frame alarm parameters.
Views
Ethernet interface view
Predefined user roles
network-admin
Parameters
high-threshold high-value: Specifies the upper threshold for sent pause frame alarms, in the range of 1 to 4294967295.
low-threshold low-value: Specifies the lower threshold for sent pause frame alarms, in the range of 1 to 4294967295.
interval interval: Specifies the statistics collection and comparison interval for sent pause frame packets, in the range of 1 to 65535 seconds.
Usage guidelines
With the sent pause frame alarm function enabled, when the number of sent pause frame packets on an interface in normal state within the specified interval exceeds the upper threshold, the interface generates an upper threshold exceeding alarm and enters the alarm state. When the number of sent pause frame packets on an interface in the alarm state within the specified interval drops below the lower threshold, the interface generates a recovery alarm and restores to the normal state.
You can configure the sent pause frame alarm parameters in system view and interface view.
· The configuration in system view takes effect on all interfaces of the specified slot. The configuration in interface view takes effect only on the current interface.
· For an interface, the configuration in interface view takes priority, and the configuration in system view is used only when no configuration is made in interface view.
For this command to take effect, you must use the snmp-agent trap enable ifmonitor command to enable the sent pause frame alarm function.
When you execute this command multiple times, the most recent configuration takes effect.
Examples
# Set the upper threshold to 50, lower threshold to 40, and statistics collection and comparison interval to 8 seconds for sent pause frame alarms on HundredGigE 1/0/1.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] port ifmonitor tx-pause high-threshold 50 low-threshold 40 interval 8
Related commands
snmp-agent trap enable ifmonitor
port link-flap protect
Use port link-flap protect to configure link flapping protection on an interface.
Use undo port link-flap protect to restore the default.
Syntax
port link-flap protect { disable | enable [ interval interval | threshold threshold ] * }
undo port link-flap protect { disable | enable [ interval | threshold ] }
Default
Link flapping protection is not configured on an interface, and the global link flapping protection configuration applies on the interface.
Ethernet interface view
Predefined user roles
network-admin
Parameters
disable: Disables link flapping protection on the interface.
enable: Enables link flapping protection on the interface.
interval interval: Specifies the link flapping detection interval in seconds. The value range for this argument is 5 to 86400. The default value for this argument is 10.
threshold threshold: Specifies the link flapping detection threshold in the range of 2 to 1200. The default value for this argument is 5.
Usage guidelines
Link flapping protection takes effect only when it is enabled in both the system view and interface view.
Any of the following operations can enable link flapping protection:
· Execute the link-flap protect enable batch command in system view, and do not configure link flapping protection on interfaces.
· Execute the link-flap protect enable batch command in system view, and execute the port link-flap protect enable command in interface view.
· Execute the link-flap protect enable command in system view, and execute the port link-flap protect enable command in interface view.
If the interval or threshold keyword is not specified when you execute the port link-flap protect enable command, the command uses the default settings for the interval and threshold keywords.
The undo port link-flap protect command works different depending on the keywords specified as follows:
· If the disable or enable keyword is not specified, this command restores the default for the link flapping protection function on the interface.
· If the interval or threshold keyword is specified, this command restores the default for the interval or threshold keyword.
With link flapping protection enabled on an interface, when the interface goes down, the system enables link flapping detection on the interface. During the link flapping detection interval, if the number of detected flaps reaches or exceeds the link flapping detection threshold, the system shuts down the interface.
To bring up an interface that has been shut down by link flapping protection, execute the undo shutdown command.
This command and the link-delay command are mutually exclusive on an Ethernet interface.
Examples
# Enable link flapping protection on an interface. Set the link flapping detection interval to 10 seconds, and set the link flapping detection threshold to 5.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE 1/0/1] port link-flap protect enable interval 10 threshold 5
Related commands
link-delay
link-flap protect enable
port link-mode
Use port link-mode to change the link mode of an Ethernet interface.
Use undo port link-mode to restore the default.
Syntax
port link-mode { bridge | route }
undo port link-mode
Default
An interface operates in Layer 3 mode.
Views
Ethernet interface view
Predefined user roles
network-admin
Parameters
bridge: Specifies the Layer 2 mode.
route: Specifies the Layer 3 mode.
Usage guidelines
CAUTION: Changing the link mode of an Ethernet interface also restores all commands (except description, duplex, jumboframe enable, speed, shutdown, combo enable, and port training) on the Ethernet interface to their defaults in the new link mode. |
Ethernet interfaces can operate either as Layer 2 or Layer 3 Ethernet interfaces. You can use this command to set the link mode to bridge (Layer 2) or route (Layer 3) for these Ethernet interfaces.
Examples
# Configure HundredGigE 1/0/1 to operate in Layer 2 mode.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] port link-mode bridge
port up-mode
Use port up-mode to forcibly bring up a fiber Ethernet port.
Use undo port up-mode to restore the default.
Syntax
port up-mode
undo port up-mode
Default
A fiber Ethernet port is not forcibly brought up. The physical state of a fiber port depends on the physical state of the fibers.
Views
Ethernet interface view
Predefined user roles
network-admin
Usage guidelines
This command forcibly brings up a fiber Ethernet port and enables the port to forward packets unidirectionally over a single link. In this way, transmission links are well utilized.
The shutdown and port up-mode commands are mutually exclusive.
Examples
# Forcibly bring up fiber port HundredGigE 1/0/1.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] port up-mode
port up-delay
Use port up-delay to configure the delay for a physical Ethernet interface to come up when the interface is activated for the first time.
Use undo port up-delay to restore the default.
Syntax
port up-delay delay-time
undo port up-delay
Default
A physical Ethernet interface immediately comes up when the interface is activated for the first time.
Views
Ethernet interface view
Predefined user roles
network-admin
Parameters
delay-time: Specifies the delay for an interface to come up, in the range of 1 to 21600 seconds.
Usage guidelines
When a device or interface card is started, the interfaces will be initialized in the ascending order of interface number. In this case, if an interface is physically connected to a peer interface, the interface immediately comes up physically. When the incoming interface of a packet has come up, it is possible that the outgoing interface has not come up or the routing entry has not been generated. As a result, the packet fails to be forwarded.
After you execute this command, when the device or interface card is started, an interface comes up after the specified delay when the interface is physically connected to a peer interface and activated for the first time. Subsequently, during the device running process, when you unplug/plug a cable or execute the shutdown and undo shutdown commands on the interface to make the interface go down and come up, the time taken for the interface to come up is not affected by this command.
Examples
# Configure a 100-second delay for a physical Ethernet interface to come up when the interface is activated for the first time.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] port up-delay 100
reset ethernet statistics
Use reset ethernet statistics to clear the Ethernet module statistics.
Syntax
reset ethernet statistics [ slot slot-number ]
Views
User view
Predefined user roles
network-admin
Parameters
slot slot-number: Specifies the slot number of the device, which is fixed at 1.
Examples
# Clear the Ethernet module statistics for the specified slot.
<Sysname> reset ethernet statistics slot 1
Related commands
display ethernet statistics
reset link-state-change statistics interface
Use reset link-state-change statistics interface to clear link state change statistics of interfaces.
Syntax
reset link-state-change statistics interface [ interface-type [ interface-number ] ]
Default
Link state change statistics of an interface are not cleared.
Views
User view
Predefined user roles
network-admin
Parameters
interface-type: Specifies an interface type.
interface-number: Specifies an interface number.
Usage guidelines
If you do not specify an interface type, this command clears the link state change statistics for all up interfaces that have traffic counters.
If you specify an interface type but do not specify an interface number, this command clears the link state change statistics for all interfaces of the specified type.
Examples
# Clear the link state change statistics of HundredGigE 1/0/1.
<Sysname> reset link-state-change statistics interface hundredgige 1/0/1
Related commands
display link-state-change statistics interface
reset packet-drop interface
Use reset packet-drop interface to clear the dropped packet statistics for an interface.
Syntax
reset packet-drop interface [ interface-type [ interface-number ] ]
Views
User view
Predefined user roles
network-admin
Parameters
interface-type: Specify an interface type.
interface-number: Specify an interface number.
Usage guidelines
If you do not specify an interface type, this command clears dropped packet statistics for all interfaces on the device.
If you specify an interface type but do not specify an interface number, the command clears dropped packet statistics for all interfaces of the specified type.
Examples
# Clear dropped packet statistics for HundredGigE 1/0/1.
<Sysname> reset packet-drop interface hundredgige 1/0/1
# Clear dropped packet statistics for all interfaces.
<Sysname> reset packet-drop interface
Related commands
display packet-drop
shutdown all-interfaces
Use shutdown all-interfaces to shut down all main interfaces except management interfaces and interfaces excluded from shutdown.
Use undo shutdown all-interfaces to bring up all main interfaces except management interfaces and interfaces excluded from shutdown.
Syntax
shutdown all-interfaces exclude interface-list
undo shutdown all-interfaces exclude interface-list
Default
Interfaces are up.
Views
System view
Predefined user roles
network-admin
Parameters
exclude interface-list: Specifies interfaces to be excluded from shutdown. With this option specified, this command will shut down all main interfaces except the management Ethernet interfaces, IRF physical interfaces, and the specified interfaces excluded from shutdown. Shutdown interfaces are in ADM state. Specify the interface list in the format of interface-list = { interface-type interface-number1 [ to interface-type interface-number2 ] }&<1-8>. The interface-type interface-number argument specifies an interface by its type and number. The & <1- 8> argument indicates that you can specify the preceding parameter for up to 8 times. The selected interfaces must reside on the same interface card or subcard. The value for the interface-number2 argument must be greater than the value for the interface-number1 argument. For the configuration to succeed, make sure the start interface and the end interface, which are before and after the to keyword respectively, are of the same type.
Usage guidelines
This command shuts down all interfaces except the management Ethernet interfaces, IRF physical interfaces, and interfaces excluded from shutdown on a device. For an interface that supports subinterfaces, only the main interface is shut down, and its subinterfaces will not be shut down by this command. In this case, if you execute the display this command on an interface that is shut down, the output shows that the shutdown command is automatically generated on the interface.
To bring up an interface shut down by using the shutdown all-interfaces command, you can execute the undo shutdown command in interface view or the undo shutdown all-interfaces command in system view.
Examples
# Shut down all main interfaces except management interfaces and interfaces HundredGigE1/0/1 through HundredGigE1/0/4.
<Sysname> system-view
[Sysname] shutdown all-interfaces exclude hundredgige 1/0/1 to hundredgige 1/0/4
Related commands
shutdown
shutdown all-physical-interfaces
shutdown all-physical-interface
Use shutdown all-physical-interfaces to shut down all physical interfaces.
Use undo shutdown all-physical-interfaces to bring up all physical interfaces.
Syntax
shutdown all-physical-interfaces
undo shutdown all-physical-interfaces
Default
Physical interfaces are down.
Views
System view
Predefined user roles
network-admin
Usage guidelines
With the shutdown all-physical-interfaces command, you can shut down all physical interfaces except the management Ethernet interfaces on the device. Physical interfaces shut down by using this command are in ADM state.
To shut down all physical interfaces or the specified interface, execute the shutdown all-physical-interfaces command in system view or execute the shutdown command in interface view.
To bring up a shutdown interface, execute the undo shutdown all-physical-interfaces command in system view and execute the undo shutdown command in interface view.
Examples
# Shut down all physical interfaces.
<Sysname> system-view
[Sysname] shutdown all-physical-interfaces
Related commands
shutdown
snmp-agent trap enable ifmonitor
Use snmp-agent trap enable ifmonitor to enable interface alarm functions.
Use undo snmp-agent trap enable ifmonitor to disable interface alarm functions.
Syntax
snmp-agent trap enable ifmonitor [ crc-error | input-error | input-usage | output-error | output-usage | rx-pause | sdh-b1-error | sdh-b2-error | sdh-error | tx-pause ] *
undo snmp-agent trap enable ifmonitor [ crc-error | input-error | input-usage | output-error | output-usage | rx-pause | sdh-b1-error | sdh-b2-error | sdh-error | tx-pause ] *
Default
Interface alarm functions are enabled.
Views
System view
Predefined user roles
network-admin
Parameters
crc-error: Enables the CRC error packet alarm function for interfaces.
input-error: Enables the input error packet alarm function for interfaces.
input-usage: Enables the input bandwidth usage alarm function for interfaces.
output-error: Enables the output error packet alarm function for interfaces.
output-usage: Enables the output bandwidth usage alarm function for interfaces.
rx-pause: Enables the received pause frame alarm function for interfaces.
sdh-b1-error: Enables the SDH-B1 error packet alarm function for interfaces.
sdh-b2-error: Enables the SDH-B2 error packet alarm function for interfaces.
sdh-error: Enables the SDH error packet alarm function for interfaces.
tx-pause: Enables the sent pause frame alarm function for interfaces.
Examples
# Enable the CRC error packet alarm function for interfaces.
<Sysname> system-view
[Sysname] snmp-agent trap enable ifmonitor crc-error
speed
Use speed to set the speed of an Ethernet interface.
Use undo speed to restore the default.
Syntax
speed { 10 | 100 | 1000 | 10000 | 40000 | 100000 | 200000 | 400000 | auto }
undo speed
Default
The speed of an Ethernet interface is autonegotiated.
Views
Ethernet interface view
Predefined user roles
network-admin
Parameters
10: Sets the interface speed to 10 Mbps.
100: Sets the interface speed to 100 Mbps.
1000: Sets the interface speed to 1000 Mbps.
10000: Sets the interface speed to 10000 Mbps.
40000: Sets the interface speed to 40000 Mbps.
100000: Sets the interface speed to 100000 Mbps.
200000: Sets the interface speed to 200000 Mbps.
400000: Sets the interface speed to 400000 Mbps.
auto: Enables the interface to negotiate a speed with its peer.
Usage guidelines
For an Ethernet copper port, use the speed command to set its speed to match the speed of the peer interface. Support of copper ports for keywords of this command varies by copper port type. For more information, use the speed ? command in interface view. If the system does not prompt that operation failed when you configure a speed for a copper port, the copper port supports this speed. Otherwise, the copper port does not support this speed.
For a fiber port, use the speed command to set its speed to match the rate of a transceiver module. Support of fiber ports for keywords of this command varies by fiber port type. For more information, use the speed ? command in interface view. If the system does not prompt that operation failed when you configure a speed for a fiber port, the fiber port supports this speed. Otherwise, the fiber port does not support this speed.
Additionally, you must select a speed for a fiber port according to the transceiver module installed to ensure that the transceiver module can be used properly. If the transceiver module installed in a fiber port does not support the speed for the fiber port, the transceiver module cannot be used. For example, the transceiver module cannot be used if the following conditions exist:
· The transceiver module installed in an SFP+ fiber port is an SFP GE transceiver module and the speed 10000 command is executed on the fiber port.
· The transceiver module installed in an SFP+ fiber port is an SFP 10-GE transceiver module and the speed 1000 command is executed on the fiber port.
Examples
# Configure HundredGigE 1/0/1 to autonegotiate the speed.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] speed auto
sub-interface rate-statistic
Use sub-interface rate-statistic to enable rate statistics collection for the subinterfaces of an Ethernet interface.
Use undo sub-interface rate-statistic to disable rate statistics collection for the subinterfaces of an Ethernet interface.
Syntax
sub-interface rate-statistic
undo sub-interface rate-statistic
Default
The system does not collect rate statistics for the subinterfaces of an Ethernet interface.
Views
Ethernet interface view
Predefined user roles
network-admin
Usage guidelines
This command is resource intensive. When you use this command, make sure you fully understand its impact on system performance.
Examples
# Enable rate statistics collection for the subinterfaces of HundredGigE 1/0/1.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] sub-interface rate-statistic
This configuration may make a negative effect on the performance. Are you sure to continue? [Y/N]:y
unicast-suppression
Use unicast-suppression to enable unknown unicast storm suppression and set the unknown unicast storm suppression threshold.
Use undo unicast-suppression to disable unknown unicast storm suppression.
Syntax
unicast-suppression { ratio | pps max-pps | kbps max-kbps }
undo unicast-suppression
Default
Ethernet interfaces do not suppress unknown unicast traffic.
Views
Ethernet interface view
Predefined user roles
network-admin
Parameters
ratio: Sets the unknown unicast suppression threshold as a percentage of the interface bandwidth. The value range for this argument (in percentage) is 0 to 100. A smaller value means that less unknown unicast traffic is allowed to pass through.
pps max-pps: Specifies the maximum number of unknown unicast packets that the interface can forward per second. The value range for the max-pps argument (in pps) is 0 to 1.4881 × the interface bandwidth.
kbps max-kbps: Specifies the maximum number of kilobits of unknown unicast traffic that the Ethernet interface can forward per second. The value range for this argument (in kbps) is 0 to the interface bandwidth.
Usage guidelines
The unknown unicast storm suppression feature limits the size of unknown unicast traffic to a threshold on an interface. When the unknown unicast traffic on the interface exceeds this threshold, the system discards packets until the unknown unicast traffic drops below this threshold.
Both the storm-constrain command and the unicast-suppression command can suppress unknown unicast storms on a port. The unicast-suppression command uses the chip to physically suppress unknown unicast traffic. It has less influence on the device performance than the storm-constrain command, which uses software to suppress unknown unicast traffic.
For the unknown unicast traffic suppression result to be determined, do not configure both the storm-constrain unicast command and the unicast-suppression command on an interface.
Examples
# Set the unknown unicast storm suppression threshold to 10000 kbps on HundredGigE 1/0/1.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] unicast-suppression kbps 10000
Related commands
broadcast-suppression
multicast-suppression
using fourhundredgige
Use using fourhundredgige to combine breakout interfaces split from a 400-GE interface into a 400-GE interface.
Syntax
using fourhundredgige
Default
The breakout interfaces are not combined and operate as single interfaces.
Views
100-GE breakout interface view
200-GE breakout interface view
Predefined user roles
network-admin
Usage guidelines
If you need higher bandwidth on a single interface, you can combine the four 100-GE breakout interfaces or two 200-GE breakout interfaces into a 400-GE interface. To do so, execute this command on any of these 100-GE or 200-GE breakout interfaces.
As a best practice for this feature to take effect stably, reboot the card where the related interface resides after executing this command. To view the split or combined interfaces, execute the display interface brief command.
Examples
# Combine HundredGigE1/0/1:1 through HundredGigE1/0/1:4 into a 400-GE interface.
<System> system-view
[System] interface hundredgige 1/0/1:1
[System-HundredGigE 1/0/1:1] using fourhundredgige
The interfaces HundredGigE1/0/1:1 through HundredGigE1/0/1:4 will be deleted. Continue? [Y/N]:y
# Combine TwoHundredGigE 1/0/1:1 and TwoHundredGigE1/0/1:2 into a 400-GE interface.
<Sysname> system-view
[Sysname] interface twohundredgige 1/0/1:1
[Sysname-TwoHundredGigE1/0/1:1] using fourhundredgige
The interfaces TwoHundredGigE1/0/1:1 and TwoHundredGigE1/0/1:2 will be deleted. Continue? [Y/N]:y
Related commands
using hundredgige
using twohundredgige
using hundredgige
Use using hundredgige to combine breakout interfaces split from a 100-GE interface into a 100-GE interface, or split a 400-GE interface into multiple 100-GE interfaces.
Syntax
using hundredgige [ mode 2-channel ]
Default
The breakout interfaces are not combined and operate as single interfaces. The 400-GE interface is used as a single interface, and is not split.
Views
10-GE breakout interface view
400-GE breakout interface view
Predefined user roles
network-admin
Parameters
mode 2-channel: Splits a 400-GE interface into two 100-GE interfaces. If you do not specify this parameter, a 400-GE interface will be split into four 100-GE interfaces.
IMPORTANT: The mode 2-channel keyword is supported only in R5111 or later versions. |
Usage guidelines
You can split a 100-GE interface into four 10-GE breakout interfaces depending on the chip specifications.
To improve port density, reduce costs, and improve network flexibility, you can split 400-GE interface FourHundredGigE 1/0/1 into four 100-GE breakout interfaces HundredGigE 1/0/1:1 through HundredGigE 1/0/1:4. The 100-GE breakout interfaces support the same configuration and attributes as common 100-GE interfaces, except that they are numbered differently and cannot be split.
If you need higher bandwidth on a single interface, you can combine four 10-GE breakout interfaces split from a 100-GE interface into a 100-GE interface. To do so, execute this command on any of these 10-GE breakout interfaces.
For this command to take effect stably, as a best practice, reboot the card where the related interface resides after executing this command. To view the split or combined interfaces, execute the display interface brief command.
If you split a 400-GE interface with a 40G, 100G, or 200G transceiver module installed, only the first breakout interface is available.
Examples
# Combine Ten-GigabitEthernet 1/0/1:1 through Ten-GigabitEthernet 1/0/1:4 into a 100-GE interface.
<Sysname> system-view
[Sysname] interface ten-gigabitethernet 1/0/1:1
[Sysname-Ten-GigabitEthernet1/0/1:1]using hundredgige
The interfaces Ten-GigabitEthernet1/0/1:1 through Ten-GigabitEthernet1/0/1:4 will be deleted. Continue? [Y/N]:y
Reboot device to make the configuration take effect.
# Split FourHundredGigE 1/0/1 into multiple 100-GE interfaces.
<Sysname> system-view
[Sysname] interface fourhundredgige 1/0/1
[Sysname-FourHundredGigE1/0/1] using hundredgige mode 2-channel
The interface FourHundredGigE1/0/1 will be deleted. Continue? [Y/N]:y
Related commands
using fiftygige
using tengige
using twohundredgige
Use using twohundredgige to split a 400-GE interface into two 100-GE interfaces.
Syntax
using twohundredgige
Default
A 400-GE interface is not split and operates as a single interface.
Views
400-GE interface view
Predefined user roles
network-admin
Usage guidelines
To improve port density, reduce costs, and improve network flexibility, you can split 400-GE interface FourHundredGigE 1/0/1 into two 200-GE breakout interfaces HundredGigE 1/0/1:1 through HundredGigE 1/0/1:2.
For this command to take effect stably, as a best practice, reboot the card where the related interface resides after executing this command. To view the split or combined interfaces, execute the display interface brief command.
If you split a 400-GE interface with a 40G, 100G, or 200G transceiver module installed, only the first breakout interface is available.
Examples
# Combine HundredGigE 1/0/1:1 and HundredGigE 1/0/1:2 into a 200-GE interface.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1:1
[Sysname-HundredGigE1/0/1:1] using twohundredgige
The interface HundredGigE1/0/1:1 will be deleted. Continue? [Y/N]:y
Reboot device to make the configuration take effect.
# Split FourHundredGigE 1/0/1 into two 200-GE interfaces.
<System> system-view
[System] interface fourhundredgige 1/0/1
[System-FourHundredGigE1/0/1] using twohundredgige
The interface FourHundredGigE1/0/1 will be deleted. Continue? [Y/N]:y
Related commands
using fourhundredgige
Layer 2 Ethernet interface commands
display storm-constrain
Use display storm-constrain to display storm control settings and statistics.
Syntax
display storm-constrain [ broadcast | multicast | unicast ] [ interface interface-type interface-number ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
broadcast: Displays broadcast storm control settings and statistics.
multicast: Displays multicast storm control settings and statistics.
unicast: Displays unknown unicast storm control settings and statistics.
interface interface-type interface-number: Specifies an interface by its type and number. If you do not specify this option, the command displays storm control settings and statistics for all storm control-enabled interfaces.
Usage guidelines
If you do not specify any keywords, this command displays all storm control settings on all storm control-enabled interfaces.
Examples
# Display the storm control settings on all storm control-enabled ports.
<Sysname> display storm-constrain
Abbreviation: BC - broadcast; MC - multicast; UC - unknown unicast;
KNUC - known unicast; FW - forwarding
Flow Statistic Interval: 5 (in seconds)
Port Type Lower Upper Unit CtrlMode Status Trap Log StateChanges
--------------------------------------------------------------------------------
HGE1/0/1 MC 100 200 kbps shutdown shutdown off on 10
Table 7 Command output
Field |
Description |
Flow Statistic Interval |
Traffic polling interval (in seconds) of the storm control module. |
Port |
Abbreviated interface name. |
Type |
Type of traffic subjected to storm control: · BC—Broadcast packets. · MC—Multicast packets. · UC—Unknown unicast packets. |
Lower |
Lower storm control threshold, in pps, kbps, or percentage. |
Upper |
Upper storm control threshold, in pps, kbps, or percentage. |
Unit |
Storm control threshold unit: · pps. · kbps. · percentage. |
CtrlMode |
Action (block or shutdown) taken on the interface when the upper threshold is reached. N/A indicates that no action is configured. |
Status |
Packet forwarding status: · FW—The port is forwarding traffic correctly. · shutdown—The port has been shut down. · block—The port drops the type of traffic. |
Trap |
Status of the storm control threshold event trap switch: · on—The port sends threshold event traps. · off—The port does not send threshold event traps. |
Log |
Status of the storm control threshold event log switch: · on—The port sends threshold event log messages. · off—The port does not send threshold event log messages. |
SwitchNum |
Number of forwarding state changes of the interface. When the SwitchNum field reaches 65535, it resets automatically. |
storm-constrain
Use storm-constrain to enable storm control and set thresholds for broadcast, multicast, or unknown unicast packets on an Ethernet interface.
Use undo storm-constrain to disable storm control for broadcast, multicast, unknown unicast, or all types of traffic.
Syntax
storm-constrain { broadcast | multicast | unicast } { pps | kbps | ratio } upperlimit lowerlimit
undo storm-constrain { all | broadcast | multicast | unicast }
Default
Traffic storm control is disabled.
Views
Layer 2 Ethernet interface view
Predefined user roles
network-admin
Parameters
all: Disables storm control for all types of traffic: unknown unicast, multicast, and broadcast.
broadcast: Enables or disables broadcast storm control.
multicast: Enables or disables multicast storm control.
unicast: Enables or disables unknown unicast storm control.
pps: Sets storm control thresholds in pps.
kbps: Sets storm control thresholds in kbps.
ratio: Sets storm control thresholds as a percentage of the transmission capacity of the interface.
upperlimit: Sets the upper threshold, in pps, kbps, or percentage.
· If you specify the pps keyword, the value range for the upperlimit argument is 0 to 1.4881 × the interface bandwidth.
· If you specify the kbps keyword, the value range for the upperlimit argument is 0 to the interface bandwidth.
· If you specify the ratio keyword, the value range for the upperlimit argument is 0 to 100.
lowerlimit: Sets the lower threshold, in pps, kbps, or percentage.
· If you specify the pps keyword, the value range for the lowerlimit argument is 0 to 1.4881 × the interface bandwidth.
· If you specify the kbps keyword, the value range for the lowerlimit argument is 0 to the interface bandwidth.
· If you specify the ratio keyword, the value range for the lowerlimit argument is 0 to 100.
Usage guidelines
After you configure storm control for a type of traffic, the device collects the statistics for the type of traffic at the interval configured by using the storm-constrain interval command. When the type of traffic exceeds its upper threshold, the interface takes an action configured by using the storm-constrain control command.
The storm-constrain, broadcast-suppression, multicast-suppression, and unicast-suppression commands can suppress storms on an interface. The broadcast-suppression, multicast-suppression, and unicast-suppression commands use the chip to physically suppress traffic. They have less influence on the device performance than the storm-constrain command, which uses software to suppress traffic.
For the traffic suppression result to be determined, do not configure both storm control and storm suppression for the same type of traffic.
When configuring this command, make sure upperlimit is greater than lowerlimit.
Examples
# Enable unknown unicast storm control on HundredGigE 1/0/1 and set the upper and lower thresholds to 200 pps and 150 pps, respectively.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] storm-constrain unicast pps 200 150
# Enable broadcast storm control on HundredGigE 1/0/2, and set the upper and lower thresholds to 2000 kbps and 1500 kbps, respectively.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/2
[Sysname-HundredGigE1/0/2] storm-constrain broadcast kbps 2000 1500
# Enable multicast storm control on HundredGigE 1/0/3, and set the upper and lower thresholds to 80% and 15%, respectively.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/3
[Sysname-HundredGigE1/0/3] storm-constrain multicast ratio 80 15
Related commands
storm-constrain interval
storm-constrain control
Use storm-constrain control to set the action to take on an Ethernet interface when a type of traffic (unknown unicast, multicast, or broadcast) exceeds the upper storm control threshold.
Use undo storm-constrain control to restore the default.
Syntax
storm-constrain control { block | shutdown }
undo storm-constrain control
Default
No action is taken on an Ethernet interface when a type of traffic exceeds the upper storm control threshold.
Views
Layer 2 Ethernet interface view
Predefined user roles
network-admin
Parameters
block: Blocks this type of traffic and forwards other types of traffic. Even though the interface does not forward the blocked traffic, it still counts the traffic. When the blocked traffic drops below the lower threshold, the port begins to forward the traffic.
shutdown: Goes down automatically. The interface goes down automatically and stops forwarding any traffic. When the blocked traffic drops below the lower threshold, the interface does not forward the traffic. To bring up the interface, use the undo shutdown command or disable storm control on the interface.
Examples
# Configure HundredGigE 1/0/1 to block a specific type of traffic when the type of traffic exceeds the upper storm control threshold.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] storm-constrain control block
Related commands
storm-constrain
storm-constrain control
storm-constrain enable log
Use storm-constrain enable log to enable an Ethernet interface to output log messages when it detects storm control threshold events.
Use undo storm-constrain enable log to disable an Ethernet interface from outputting log messages for storm control threshold events.
Syntax
storm-constrain enable log
undo storm-constrain enable log
Default
An Ethernet interface outputs log messages when monitored traffic exceeds the upper threshold or drops below the lower threshold from a value above the upper threshold.
Views
Layer 2 Ethernet interface view
Predefined user roles
network-admin
Examples
# Enable HundredGigE 1/0/1 to output log messages when it detects storm control threshold events.
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] storm-constrain enable log
storm-constrain enable trap
Use storm-constrain enable trap to enable an Ethernet interface to send storm control threshold event traps.
Use undo storm-constrain enable trap to disable an Ethernet interface from sending storm control threshold event traps.
Syntax
storm-constrain enable trap
undo storm-constrain enable trap
Default
An interface sends out storm control threshold event traps when monitored traffic exceeds the upper threshold or drops below the lower threshold from a value above the upper threshold.
Views
Layer 2 Ethernet interface view
Predefined user roles
network-admin
Examples
# Enable HundredGigE 1/0/1 to send traps when it detects storm control threshold events.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] storm-constrain enable trap
storm-constrain interval
Use storm-constrain interval to set the traffic polling interval of the storm control module.
Use undo storm-constrain interval to restore the default.
Syntax
storm-constrain interval interval
undo storm-constrain interval
Default
The storm control module polls traffic statistics every 10 seconds.
Views
System view
Predefined user roles
network-admin
Parameters
interval: Sets the traffic polling interval of the storm control module. The value range is 1 to 300 seconds. To ensure network stability, as a best practice, do not use a traffic polling interval shorter than 10 seconds.
Usage guidelines
The traffic polling interval set by using the storm-constrain interval command is specific to storm control. To set the statistics polling interval of an interface, use the flow-interval command.
Examples
# Set the traffic statistics polling interval of the storm control module to 60 seconds.
<Sysname> system-view
[Sysname] storm-constrain interval 60
Related commands
storm-constrain
Layer 3 Ethernet interface or subinterface commands
mac-address
Use mac-address to set the MAC address of an Ethernet interface.
Use undo mac-address to restore the default.
Syntax
mac-address mac-address
undo mac-address
Default
No MAC address is configured for an Ethernet interface.
Views
Layer 3 Ethernet interface view
Layer 3 Ethernet subinterface view
Predefined user roles
network-admin
Parameters
mac-address: Specifies a MAC address in the format of H-H-H.
Usage guidelines
Do not set a VRRP-reserved MAC address for a Layer 3 Ethernet subinterface.
When you set a MAC address, make sure the following requirements are met:
· The MAC address must have the same highest 36 bits as the base MAC address.
· The MAC address must be no lower than the base MAC address plus 160 (decimal).
For more information about base MAC address, see MAC address table in Layer 2—LAN Switching Configuration Guide.
Examples
# Set the MAC address of HundredGigE 1/0/1 to 0001-0001-0001.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] mac-address 1-1-1
mtu
Use mtu to set the MTU for an Ethernet interface or subinterface.
Use undo mtu to restore the default.
Syntax
mtu size
undo mtu
Default
The MTU of an Ethernet interface or subinterface is 1500 bytes.
Views
Layer 3 Ethernet interface view
Layer 3 Ethernet subinterface view
Predefined user roles
network-admin
Parameters
size: Sets the MTU in bytes. The value range for this argument is 46 to 9216.
Usage guidelines
The configured MTU takes effect only on the packets forwarded by the CPU. To avoid unnecessary fragmentation, set a proper MTU value.
If an interface supports both the mtu and ip mtu commands, the device fragments an IPv4 packet based on the MTU set by using the ip mtu command. For more information about the ip mtu command, see Layer 3—IP Services Command Reference.
Examples
# Set the MTU to 1430 bytes for HundredGigE 1/0/1.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] mtu 1430
# Set the MTU to 1430 bytes for HundredGigE 1/0/1.1.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1.1
[Sysname-HundredGigE1/0/1.1] mtu 1430