03-Interface Command Reference

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03-Ethernet interface commands
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Contents

Ethernet interface commands· 1

Common Ethernet interface commands· 1

broadcast-suppression· 1

dampening· 2

display ethernet statistics· 3

display interface· 5

display interface split-capable· 16

display link-flap protection· 17

display packet-drop· 18

duplex· 19

flow-control 19

flow-control receive enable· 20

flow-interval 20

ifmonitor crc-error 21

ifmonitor input-error 22

ifmonitor input-usage· 23

ifmonitor output-error 24

ifmonitor output-usage· 25

ifmonitor rx-pause· 26

ifmonitor sdh-b1-error 27

ifmonitor sdh-b2-error 29

ifmonitor sdh-error 30

ifmonitor tx-pause· 31

interface· 32

jumboframe enable· 33

link-delay· 33

link-flap protect enable· 34

loopback· 35

multicast-suppression· 36

port ifmonitor crc-error 37

port ifmonitor input-error 38

port ifmonitor input-usage· 39

port ifmonitor output-error 40

port ifmonitor output-usage· 42

port ifmonitor rx-pause· 43

port ifmonitor sdh-b1-error 44

port ifmonitor sdh-b2-error 45

port ifmonitor sdh-error 46

port ifmonitor tx-pause· 47

port link-flap protect enable· 48

port link-mode· 49

port up-mode· 50

reset ethernet statistics· 50

reset packet-drop interface· 51

snmp-agent trap enable ifmonitor 51

speed· 52

sub-interface rate-statistic· 53

unicast-suppression· 54

using fourhundredgige· 55

using hundredgige· 56

using tengige· 57

Layer 2 Ethernet interface commands· 58

display storm-constrain· 58

storm-constrain· 59

storm-constrain control 61

storm-constrain enable log· 62

storm-constrain enable trap· 62

storm-constrain interval 63

Layer 3 Ethernet interface or subinterface commands· 63

mac-address· 63

mtu· 64

 


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

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 MSTP or Smart Link enabled.

After an interface in down state is dampened, the interface state displayed through the display interface command 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 a card by its slot number.

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 Output description

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.

·     MbufRelayNum—Number of packets transparently sent.

ETH send error statistics

Statistics about the error Ethernet packets in the outbound direction on the Ethernet module:

·     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 25 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.

For a Layer 3 Ethernet subinterface, this command displays the total number of packets rather than the number of each type of packets.

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

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 clearing of counters: Never

Current system time:2021-06-08 14:50:06

Last time when physical state changed to up:2021-06-08 14:49:45

Last time when physical state changed to down:2021-06-08 14:49:45

 Peak input rate: 0 bytes/sec, at 2021-06-07 16:07:11

 Peak output rate: 0 bytes/sec, at 2021-06-07 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

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 clearing of counters:  14:34:09 Tue 11/01/2011

Current system time:2021-06-08 14:50:06

Last time when physical state changed to up:2021-06-08 14:49:45

Last time when physical state changed to down:2021-06-08 14:49:45

 Peak input rate: 0 bytes/sec, at 2021-05-17 22:06:19

 Peak output rate: 0 bytes/sec, at 2021-05-17 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 ( Link-Aggregation interface down )—The aggregate interface to which the interface belongs has been shut down by using the shutdown command.

·     DOWN ( Monitor Link )—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.

·     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 3IP Services Configuration Guide.

·     BOOTP-allocatedBOOTP allocated IP address. For more information, see BOOTP client configuration in Layer 3IP 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.

Port priority

Port priority of the interface.

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.

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.

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 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.

·     H—Half duplex.

·     H(a)—Autonegotiated half 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.

Related commands

reset counters interface

display interface split-capable

Use display interface split-capable to display interfaces capable of being split.

Syntax

display interface split-capable [ slot slot-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

slot slot-number: Specifies a card by its slot number. If you do not specify a card, this command displays interfaces capable of being split for all cards.

Examples

# Display interfaces capable of being split.

<Sysname> display interface split-capable

 

slot 2:

HundredGigE3/0/2       HundredGigE3/0/4       HundredGigE3/0/5

 HundredGigE3/0/7       HundredGigE3/0/10      HundredGigE3/0/11

 HundredGigE3/0/13      HundredGigE3/0/16      HundredGigE3/0/19

 HundredGigE3/0/22      HundredGigE3/0/24      HundredGigE3/0/26

 HundredGigE3/0/29      HundredGigE3/0/32      HundredGigE3/0/33

 HundredGigE3/0/35      HundredGigE3/0/38      HundredGigE3/0/39

 HundredGigE3/0/41      HundredGigE3/0/44      HundredGigE3/0/46

 HundredGigE3/0/48

40-GE interfaces capable of being split into four 10-GE interfaces:

400-GE interfaces capable of being split into multiple 200-GE or 100-GE interfaces:

display link-flap protection

Use display link-flap protection to display information about link flapping protection on an interface.

Syntax

display link-flap protection [ interface interface-type [ interface-number ] ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

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     --        --

Table 4 Command output

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.

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 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

# 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

Table 5 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.

duplex

Use duplex to set the duplex mode for an Ethernet interface.

Use undo duplex to restore the default.

Syntax

duplex { auto | full }

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.

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 a card by its slot number.

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 a card by its slot number.

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 a card by its slot number.

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 a card by its slot number.

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 a card by its slot number.

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 a card by its slot number.

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 a card by its slot number.

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 a card by its slot number.

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 a card by its slot number.

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 a card by its slot number.

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-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 on all interfaces.

Use undo link-flap protect enable to disable link flapping protection on all interfaces.

Syntax

link-flap protect enable

undo link-flap protect enable

Default

Link flapping protection is disabled on all interfaces.

Views

System view

Predefined user roles

network-admin

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.

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

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.

The configured suppression threshold value in pps or kbps might be converted into a multiple of a step supported by the chip. As a result, the effective suppression threshold might be different from the configured one. To determine the suppression threshold that takes effect, see the prompts on the device.

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

The actual value is 10048 on port HundredGigE1/0/1 currently.

The output shows that the value that takes effect is 10048 kbps (157 times of 64), because the chip only supports step 64.

Related commands

broadcast-suppression

unicast-suppression

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 HundredGigE 1/0/1.

<Sysname> system-view

[Sysname] interface hundredgige 1/0/1

[Sysname-HundredGigE1/0/1] 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 HundredGigE 1/0/1.

<Sysname> system-view

[Sysname] interface hundredgige 1/0/1

[Sysname-HundredGigE1/0/1] 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 HundredGigE 1/0/1.

<Sysname> system-view

[Sysname] interface hundredgige 1/0/1

[Sysname-HundredGigE1/0/1] 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 enable

Use port link-flap protect enable to enable link flapping protection on an interface.

Use undo port link-flap protect enable to disable link flapping protection on an interface.

Syntax

port link-flap protect enable [ interval interval | threshold threshold ] *

undo port link-flap protect enable [ interval | threshold ]

Default

Link flapping protection is disabled on an interface.

Views

Ethernet interface view

Predefined user roles

network-admin

Parameters

interval: Specifies the link flapping detection interval in seconds. The value range for this argument is 10 to 60. The default value for this argument is 10.

threshold: Specifies the link flapping detection threshold in the range of 5 to 10. 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.

If you do not specify the interval interval or threshold threshold option when you execute the port link-flap protect enable command, the command uses the default settings.

If you specify the interval or threshold keyword when you execute the undo port link-flap protect enable command, the command restores the default setting for the 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

CAUTION:

Changing the link mode of an Ethernet interface also restores all commands (except shutdown) 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

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 a card by its slot number. If you do not specify a card, this command clears statistics for all cards.  

Examples

# Clear the Ethernet module statistics for the specified slot.

<Sysname> reset ethernet statistics slot 1

Related commands

display ethernet statistics

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

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 { 10000 | 40000 | 100000 | 400000 | auto }

undo speed

Default

The speed of an Ethernet interface is autonegotiated.

Views

Ethernet interface view

Predefined user roles

network-admin

Parameters

10000: Sets the interface speed to 10000 Mbps.

40000: Sets the interface speed to 40000 Mbps.

100000: Sets the interface speed to 100000 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, if 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 cannot be used.

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

Related commands

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 100-GE breakout interfaces are not combined and operate as single interfaces.

Views

100-GE breakout interface view

Predefined user roles

network-admin

Usage guidelines

If you need higher bandwidth on a single interface, you can combine 100-GE breakout interfaces split from a 400-GE interface into a 400-GE interface. To do so, execute this command on any of these 100-GE breakout interfaces.

To ensure that the breakout function works stably, as a best practice, reboot the slot of the interface after executing this command. To view the breakout or combined interfaces, execute the display interface brief command.

After a 400-GE interface is split into breakout interfaces, the breakout interfaces might go down and come up. Wait until the breakout interfaces are stable, and then use them to process user services.

Examples

# Combine HundredGigE 1/0/1:1 and HundredGigE 1/0/1:2 into a 400-GE interface.

<System> system-view

[System] interface hundredgige1/0/1:1

[System-HundredGigE 1/0/1:1] using fourhundredgige

The interfaces HundredGigE1/0/1:1 through HundredGigE1/0/1:2 will be deleted. Continue? [Y/N]:y

Related commands

using hundredgige

using twohundredgige

using hundredgige

Use using hundredgige to combine 10-GE breakout interfaces split from a 100-GE interface into a 100-GE interface or split a 400-GE interface into multiple 100-GE breakout interfaces.

Syntax

using hundredgige [ mode 2-channel ]

Default

The 10-GE breakout interfaces are not combined and operate as single interfaces. A 400-GE interface is not split and operates as a single interface.

Views

10-GE breakout interface view

400-GE interface view

Predefined user roles

network-admin

Parameters

mode 2-channel: Splits a 400-GE interface into two 100-GE breakout interfaces. If you do not specify this keyword, this command splits a 400-GE interface into four 100-GE breakout interfaces.

 

 

NOTE:

This keyword is supported in only R5111 and later.

 

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 a 400-GE interface into multiple 100-GE breakout interfaces. For example, split a 400-GE interface FourHundredGigE 1/0/1 into four 100-GE breakout interfaces HundredGigE 1/0/1:1 and 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 in a different way. A 100-GE breakout interface 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.

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

# Split FourHundredGigE 1/0/1 into multiple 100-GE breakout interfaces.

<Sysname> system-view

[Sysname] interface fourhundredgige 1/0/1

[Sysname-FourHundredGigE1/0/1] using hundredgige

The interface FourHundredGigE1/0/1 will be deleted. Continue? [Y/N]:y

 Related commands

using tengige

using tengige

Use using tengige to split a high bandwidth interface into multiple 10-GE breakout interfaces.

Syntax

using tengige

Default

A high bandwidth interface is not split and operates as a single interface.

Views

100-GE interface view

Predefined user roles

network-admin

Usage guidelines

To improve port density, reduce costs, and improve network flexibility, you can split a high bandwidth interface into multiple 10-GE breakout interfaces. For example, split a 100-GE interface HundredGigE 1/0/1 into four 10-GE breakout interfaces Ten-GigabitEthernet 1/0/1:1 through Ten-GigabitEthernet 1/0/1:4.

The 10-GE breakout interfaces support the same configuration and attributes as common 10-GE interfaces, except that they are numbered in a different way.

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.

Examples

# Split HundredGigE 1/0/1 into 10-GE breakout interfaces.

<Sysname> system-view

[Sysname] interface hundredgige 1/0/1

[Sysname-HundredGigE1/0/1] using tengige

The interface HundredGigE1/0/1 will be deleted. Continue? [Y/N]:y

Related commands

using hundredgige

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 6 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: broadcast, multicast, and unknown unicast.

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.

When broadcast storm control has been enabled on an interface and both the upper threshold and lower threshold have been set, as a best practice, do not apply a QoS policy to the interface to collect broadcast traffic statistics. Otherwise, the QoS policy might fail to collect broadcast traffic statistics.

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 1/0/2, and set the upper and lower thresholds to 80% and 20%, 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> system-view

[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

 

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