The expected bandwidth is an informational parameter used only by higher-layer protocols for calculation. You cannot adjust the actual bandwidth of an interface by using this command.

Examples

# Set the expected bandwidth of GigabitEthernet 1/0/1 to 1000 kbps.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] bandwidth 1000

# Set the expected bandwidth of GigabitEthernet 1/0/1.1 to 1000 kbps.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1.1

[Sysname-GigabitEthernet1/0/1.1] bandwidth 1000

Related commands

speed

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

The following compatibility matrixes show the support of hardware platforms for this command:

Models	Compatibility
CSAP-NTA-100, CSAP-NTA-200, CSAP-NTA-AK375	Yes
CSAP-NTA-300, CSAP-NTA-400, CSAP-NTA-500, CSAP-NTA-600	Yes
CSAP-NTA-V200, CSAP-NTA-V1000	No

‌

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.

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 broadcast suppression threshold to 10000 kbps on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] broadcast-suppression kbps 10000

Related commands

· multicast-suppression

unicast-suppression

combo enable

Use combo enable to activate the copper or fiber combo port of a combo interface.

Syntax

combo enable { copper | fiber }

The following compatibility matrix shows the support of hardware platforms for this command:

Models	Compatibility
CSAP-NTA-100, CSAP-NTA-200, CSAP-NTA-AK375	Yes
CSAP-NTA-300, CSAP-NTA-400, CSAP-NTA-500, CSAP-NTA-600	Yes
CSAP-NTA-V200, CSAP-NTA-V1000	No

‌

Default

The copper combo port of a combo interface is activated.

Views

Ethernet interface view

Predefined user roles

network-admin

Parameters

copper: Activates the copper combo port. In this case, use twisted pairs to connect the port.

fiber: Activates the fiber combo port. In this case, use optical fibers to connect the port.

Usage guidelines

‌A combo interface is a logical interface that physically contains one fiber combo port and one copper combo port on the device panel. The two ports share one forwarding interface. As a result, they cannot work simultaneously. When you activate either port, the other port is automatically disabled. You can select to activate the copper combo port or fiber combo port.

Before using this command, perform the following tasks according to the marks on the device panel:

· Determine the combo interfaces on your device.

· Identify the two physical interfaces that belong to each combo interface.

Examples

# Activate the copper combo port of combo interface GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] combo enable copper

# Activate the fiber combo port of combo interface GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] combo enable fiber

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 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.

After an interface in down state is dampened, the interface state displayed through the display interface command, MIB, or Web is always down.

Examples

# Enable interface dampening on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] dampening

# Enable interface dampening on GigabitEthernet 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 gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] dampening 2 800 3000 5

Related commands

display interface

default

Use default to restore the default settings for an interface.

Syntax

default

Views

Ethernet interface view

Ethernet subinterface view

Predefined user roles

network-admin

Usage guidelines

CAUTION:

The default command might interrupt ongoing network services. Make sure you are fully aware of the impacts of this command when you use it in a live network.

‌

This command might fail to restore the default settings for some commands because of command dependencies or system restrictions. You can use the display this command in interface view to identify these commands, and use their undo forms or follow the command reference to restore their default settings. If your restoration attempt still fails, follow the error message instructions to solve the problem.

Examples

# Restore the default settings for GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] default

This command will restore the default settings. Continue? [Y/N]:y

# Restore the default settings for GigabitEthernet 1/0/1.1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1.1

[Sysname-GigabitEthernet1/0/1.1] default

This command will restore the default settings. Continue? [Y/N]:y

description

Use description to configure the description of an interface.

Use undo description to restore the default.

Syntax

description text

undo description

Default

The description of an interface is the interface name plus Interface (for example, GigabitEthernet1/0/1 Interface).

Views

Ethernet interface view

Ethernet subinterface view

Predefined user roles

network-admin

Parameters

text: Specifies the interface description, a case-sensitive string of 1 to 255 characters.

Examples

# Set the description of GigabitEthernet 1/0/1 to lan-interface.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] description lan-interface

# Set the description of GigabitEthernet 1/0/1.1 to subinterface1/0/1.1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1.1

[Sysname-GigabitEthernet1/0/1.1] description subinterface1/0/1.1

display counters

Use display counters to display interface traffic statistics.

Syntax

display counters { inbound | outbound } interface [ interface-type [ interface-number | interface-number.subnumber ] ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

inbound: Displays inbound traffic statistics.

outbound: Displays outbound traffic statistics.

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.

The following compatibility matrix shows the support of hardware platforms for this parameter:

Models	Parameter compatibility
CSAP-NTA-100, CSAP-NTA-200, CSAP-NTA-AK375	Yes
CSAP-NTA-300, CSAP-NTA-400, CSAP-NTA-500, CSAP-NTA-600	Yes
CSAP-NTA-V200, CSAP-NTA-V1000	No

‌

Usage guidelines

To clear the Ethernet interface traffic statistics, use the reset counters interface command.

If you do not specify an interface type, this command displays traffic statistics for all interfaces that have traffic counters.

If you specify an interface type but do not specify an interface number, this command displays traffic statistics for all interfaces of the specified type.

If you specify an interface type and number, this command displays traffic statistics for the specified interface.

Examples

# Display inbound traffic statistics for all interfaces.

<Sysname> display counters inbound interface

Interface Total (pkts) Broadcast (pkts) Multicast (pkts) Err (pkts)

GE1/0/1 100 100 0 0

GE1/0/2 Overflow Overflow Overflow Overflow

Overflow: More than 14 digits (7 digits for column "Err").

--: Not supported.

Table 1 Command output

Field	Description
Interface	Abbreviated interface name.
Total (pkts)	Total number of packets received or sent through the interface.
Broadcast (pkts)	Total number of broadcast packets received or sent through the interface.
Multicast (pkts)	‌Total number of multicast packets received or sent through the interface.
Err (pkts)	Total number of error packets received or sent through the interface.
Overflow: More than 14 digits (7 digits for column "Err")	The command displays Overflow when any of the following conditions exist: · The data length of an Err field value is greater than 7 decimal digits. · The data length of a non-Err field value is greater than 14 decimal digits.
--: Not supported	The statistical item is not supported.

‌

Related commands

reset counters interface

display counters rate

Use display counters rate to display traffic rate statistics for interfaces in up state for the most recent statistics polling interval.

Syntax

display counters rate { inbound | outbound } interface [ interface-type [ interface-number | interface-number.subnumber ] ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

inbound: Displays inbound traffic rate statistics.

outbound: Displays outbound traffic rate statistics.

interface-type: Specifies an interface type.

interface-number: Specifies an interface number.

The following compatibility matrix shows the support of hardware platforms for this parameter:

Models	Parameter compatibility
CSAP-NTA-100, CSAP-NTA-200, CSAP-NTA-AK375	Yes
CSAP-NTA-300, CSAP-NTA-400, CSAP-NTA-500, CSAP-NTA-600	Yes
CSAP-NTA-V200, CSAP-NTA-V1000	No

‌

Usage guidelines

If you do not specify an interface type, this command displays traffic rate statistics for all up interfaces that have traffic counters.

If you specify an interface type but do not specify an interface number, this command displays traffic rate statistics for all up interfaces of the specified type.

If you specify an interface type and an interface, this command displays traffic rate statistics for the specified interface.

If an interface that you specify is always down for the most recent statistics polling interval, the system prompts that the interface does not support the command.

You can use the flow-interval command to set the statistics polling interval.

Examples

# Display the inbound traffic rate statistics for all interfaces.

<Sysname> display counters rate inbound interface

Usage: Bandwidth utilization in percentage

Interface Usage (%) Total (pps) Broadcast (pps) Multicast (pps)

GE1/0/1 0 0 -- --

Overflow: More than 14 digits.

--: Not supported.

Table 2 Command output

Field	Description
Interface	Abbreviated interface name.
Usage (%)	Bandwidth usage (in percentage) of the interface for the last statistics polling interval.
Total (pps)	Average receiving or sending rate (in pps) for unicast packets for the last statistics polling interval.
Broadcast (pps)	Average receiving or sending rate (in pps) for broadcast packets for the last statistics polling interval.
Multicast (pps)	‌Average receiving or sending rate (in pps) for multicast packets for the last statistics polling interval. .
Overflow: more than 14 decimal digits	The command displays Overflow if the data length of a statistical item is greater than 14 decimal digits.
--: not supported	The statistical item is not supported.

‌

Related commands

flow-interval

reset counters interface

display ethernet statistics

Use display ethernet statistics to display the Ethernet module statistics.

Syntax

CSAP-NTA-V200[V1000]:

display ethernet statistics

CSAP-NTA-100[200][300][400][500][600][AK375]:

display ethernet statistics slot slot-number

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

slot slot-number: Specifies an IRF member device by its member ID. (CSAP-NTA-100[200][300][400][500][600][AK375])

Examples

# (CSAP-NTA-V200[V1000])Display the Ethernet module statistics.

<Sysname> display ethernet statistics

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

# (CSAP-NTA-100[200][300][400][500][600][AK375])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 3 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. This field is not supported in the current software version. · 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. · ISIS—Number of IS-IS packets.This field is not supported in the current software version. · ISIS2—Number of large 802.3/802.2 frames encapsulated by using IS-IS.This field is not supported in the current software version. · 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.

brief: Displays brief interface information. If you do not specify this keyword, the command displays detailed interface information.

description: Displays complete interface descriptions. If you do not specify this keyword, the command displays only the first 27 characters of each interface description.

down: Displays information about interfaces in down state and the causes. If you do not specify this keyword, the command displays information about interfaces in all states.

Usage guidelines

If you specify an interface type but do not specify an interface number, this command displays information about all interfaces of the specified type.

Examples

# Display information about Layer 3 interface GigabitEthernet 1/0/1.

<Sysname> display interface gigabitethernet 1/0/1

GigabitEthernet1/0/1

Current state: Administratively DOWN

Line protocol state: DOWN

Description: GigabitEthernet1/0/1 Interface

Bandwidth: 1000000 kbps

Maximum transmission unit: 1500

Allow jumbo frames to pass

Broadcast max-ratio: 100%

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

Last link flapping: 6 hours 39 minutes 28 seconds

Last clearing of counters: Never

Current system time:2017-12-09 10:46:24

Last time when physical state changed to up:-

Last time when physical state changed to down:2017-12-09 10:25:30

Peak input rate: 0 bytes/sec, at 2013-07-07 16:07:11

Peak output rate: 0 bytes/sec, at 2013-07-07 16:07:11

Last 300 second input: 0 packets/sec 0 bytes/sec 0%

Last 300 second 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

# Display detailed information about Layer 2 interface GigabitEthernet 1/0/1.

<Sysname> display interface gigabitethernet 1/0/1

GigabitEthernet1/0/1

Current state: DOWN

Line protocol state: DOWN

IP packet frame type: Ethernet II, hardware address: 000c-2963-b767

Description: GigabitEthernet1/0/1 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: 9216

Allow jumbo frame to pass

Broadcast max-ratio: 100%

Multicast max-ratio: 100%

Unicast max-ratio: 100%

PVID: 1

MDI type: Automdix

Port link-type: Access

Tagged VLANs: None

UnTagged VLANs: 1

Last link flapping: 6 hours 39 minutes 25 seconds

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

Current system time:2017-12-09 10:59:08

Last time when physical state changed to up:-

Last time when physical state changed to down:2017-12-09 10:59:07

Peak input rate: 0 bytes/sec, at 2013-07-17 22:06:19

Peak output rate: 0 bytes/sec, at 2013-07-17 22:06:19

Last 300 second input: 0 packets/sec 0 bytes/sec -%

Last 300 second 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

Table 4 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. · 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. · 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: ¡ 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.
The peer line protocol state is DOWN(Bit-error down)	Bit errors occur on the peer interface, so the data link layer state of the interface is down. This field is displayed when the local interface receives bit error messages from the peer interface.
Bandwidth	Expected bandwidth of the interface.
Maximum transmission unit	MTU of the interface.
Internet protocol processing: Disabled	The interface is not assigned an IP address and cannot process IP packets.
Internet address: ip-address/mask-length (Type)	IP address of the interface and type of the address in parentheses. Possible IP address types include: · Primary—Manually configured primary IP address. · Sub—Manually configured secondary IP address. If the interface has both primary and secondary IP addresses, the primary IP address is displayed. If the interface has only secondary IP addresses, the lowest secondary IP address is displayed. · DHCP-allocated—DHCP allocated IP address. For more information, see DHCP client configuration in Layer 3—IP Services Configuration Guide. · BOOTP-allocated—BOOTP allocated IP address. For more information, see BOOTP client configuration in Layer 3—IP Services Configuration Guide. · Unnumbered—IP address borrowed from another interface.
IP packet frame type	IPv4 packet framing format.
hardware address	MAC address of the interface.
IPv6 packet frame type	IPv6 packet framing format.
FEC mode	FEC mode. This field depends on your configuration.
Output queue - Urgent queuing: Size/Length/Discards	Statistics for the urgent queue in the output queue: · Number of buffered packets. · Maximum number of packets that can be buffered. · Number of dropped packets.
Output queue - Protocol queuing: Size/Length/Discards	Statistics for the protocol queue in the output queue: · Number of buffered packets. · Maximum number of packets that can be buffered. · Number of dropped packets.
Output queue - FIFO queuing: Size/Length/Discards	Statistics for the FIFO queue in the output queue: · Number of buffered packets. · Maximum number of packets that can be buffered. · Number of dropped packets.
Port priority	Port priority of the interface.
Loopback is set internal	An internal loopback test is running on the interface. This field depends on your configuration.
Loopback is set external	An external loopback test is running on the interface. This field depends on your configuration.
Loopback is not set	No loopback test is running on the interface. This field depends on your configuration.
10Mbps-speed mode	The interface is operating at 10 Mbps. This field depends on your configuration and the link parameter negotiation result.
100Mbps-speed mode	The interface is operating at 100 Mbps. This field depends on your configuration and the link parameter negotiation result.
1000Mbps-speed mode	The interface is operating at 1000 Mbps. This field depends on your configuration and the link parameter negotiation result.
10Gbps-speed mode	The interface is operating at 10 Gbps. This field depends on your configuration and the link parameter negotiation result.
Unknown-speed mode	The speed of the interface is unknown because the speed negotiation fails or the interface is physically disconnected.
half-duplex mode	The interface is operating in half duplex mode. This field depends on your configuration and the link parameter negotiation result.
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.
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. Options include automdix, mdi, and 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 time in the YYYY/MM/DD HH:MM:SS format. If the time zone is configured, this field is in the YYYY/MM/DD HH:MM:SS UTC±HH:MM:SS format.
Last time when physical state changed to up	Last time when physical state of the interface changed to up. A hyphen (-) indicates that the physical state of the interface has not changed to up.
Last time when physical state changed to down	Last time when physical state of the interface changed to down. A hyphen (-) indicates that the physical state of the interface has not changed to down.
Last 300 second input: 0 packets/sec 0 bytes/sec 0% Last 300 second 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: · 1518 bytes (without VLAN tags). · 1522 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 1518 bytes (without VLAN tags) or 1522 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	This field is not supported in the current software version. Number of carrier losses during transmission. This counter increases by one when a carrier is lost, and applies to serial WAN interfaces.
no carrier	This field is not supported in the current software version. 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.

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# 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

GE1/0/1 DOWN DOWN --

Loop0 UP UP(s) 2.2.2.9

NULL0 UP UP(s) --

Vlan1 UP UP --

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

GE1/0/2 DOWN auto A A 1

GE1/0/3 UP 1G(a) F(a) A 1 aaaaaaaaaaaaaaaaaaaaaaaaaaa

# Display brief information about GigabitEthernet 1/0/1, including the complete description of the interface.

<Sysname> display interface gigabitethernet 1/0/1 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

GE1/0/1 UP 1G(a) 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

GE1/0/1 DOWN Not connected

Vlan2 DOWN Not connected

Brief information on interfaces in bridge mode:

Link: ADM - administratively down; Stby - standby

Interface Link Cause

GE1/0/2 DOWN Not connected

Table 5 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. · 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. · Standby—The interface is a backup interface in standby state.

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Related commands

reset counters interface

display interface link-info

Use display interface link-info to display the status and packet statistics of interfaces.

Syntax

display interface link-info [ main ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

main: Specifies all interfaces except subinterfaces. If you do not specify this keyword, this command displays status and packet statistics of all interfaces.

Examples

# Display status and statistics of all interfaces.

<Sysname> display interface link-info

Link: ADM - administratively down; Stby - standby

Protocol: (s) - spoofing

Interface Link Protocol InUsage OutUsage InErrs OutErrs

GE1/0/1 UP UP 10.09% 0% 0 0

NULL0 UP UP(s) 0% 0% 0 0

BAGG11 ADM DOWN -- -- -- --

GE1/0/2 DOWN DOWN -- -- -- --

RAGG11 ADM DOWN -- -- -- --

GE1/0/3 DOWN DOWN -- -- -- --

Overflow: More than 7 digits.

--: Not supported.

Table 6 Command output

Field	Description
Link: ADM - administratively down; Stby - standby	Physical link state of the interface: · 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: (s) – spoofing	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, loopback interfaces, and InLoopback interfaces.
Interface	Abbreviated 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.
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, loopback interfaces, and InLoopback interfaces.
InUsage	Inbound bandwidth usage within the most recent statistics polling interval. It is calculated by this formula: Average inbound speed of the interface within the most recent statistics polling interval/interface bandwidth. When the usage is smaller than 0.01%, 0.01% is displayed. To set the statistics polling interval, use the flow-interval command.
OutUsage	Outbound bandwidth usage within the most recent statistics polling interval. It is calculated by this formula: Average outbound speed of the interface within the most recent statistics polling interval/interface bandwidth. When the usage is smaller than 0.01%, 0.01% is displayed. To set the statistics polling interval, use the flow-interval command.
InErrs	Number of error packets received.
OutErrs	Number of error packets sent.
Overflow: More than 7 digits.	The data length of a statistical item value is greater than 7 decimal digits.
--: Not supported.	A hyphen (-) indicates that the corresponding statistical item is not supported.

Related commands

flow-interval

display interface main

Use display interface main to display operating status and information of all interfaces except subinterfaces.

Syntax

display interface [ interface-type ] [ brief [ description | down ] ] main

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

interface-type: Specifies an interface type. If you do not specify this argument, the command displays information about interfaces of all types.

brief: Displays brief interface information. If you do not specify this keyword, the command displays detailed interface information.

description: Displays complete interface descriptions. If you do not specify this keyword, the command displays only the first 27 characters of each interface description.

down: Displays information about interfaces in down state and the causes. If you do not specify this keyword, the command displays information about interfaces in all states.

Examples

# Display operating status and information of all interfaces except subinterfaces.

<Sysname> display interface main

GigabitEthernet1/0/1

Current state: DOWN

Line protocol state: DOWN

IP packet frame type: Ethernet II, hardware address: 4077-a948-f538

Description: GigabitEthernet1/0/1 Interface

Loopback is not set

Media type is twisted pair, loopback not set, promiscuous mode set

Speed Negotiation, Duplex Negotiation, link type is autonegotiation

Output flow-control is disabled, input flow-control is disabled

Unknown-speed mode, unknown-duplex mode

Link speed type is autonegotiation, link duplex type is autonegotiation

Flow-control is not enabled

Maximum frame length: 9216

Allow jumbo frames to pass

Broadcast max-ratio: 100%

Multicast max-ratio: 100%

Unicast max-ratio: 100%

PVID: 110

MDI type: Automdix

Port link-type: Access

Tagged VLANs: None

Untagged VLANs: 110

Last link flapping: Never

Last clearing of counters: Never

Current system time:2021-06-16 09:42:57 Beijing+08:00:00

Last time when physical state changed to up:-

Last time when physical state changed to down:2021-06-11 09:53:05 Beijing+08:00:

Peak input rate: 0 bytes/sec, at 00-00-00 00:00:00

Peak output rate: 0 bytes/sec, at 00-00-00 00:00:00

Last 150 second input: 0 packets/sec 0 bytes/sec -%

Last 150 second 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, - throttles

0 CRC, 0 frame, 0 overruns, 0 aborts

0 ignored, - 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, - buffer failures

0 aborts, 0 deferred, 0 collisions, 0 late collisions

0 lost carrier, 0 no carrier

GigabitEthernet1/0/2

Current state: DOWN

Line protocol state: DOWN

IP packet frame type: Ethernet II, hardware address: 4077-a948-f539

Description: GigabitEthernet1/0/2 Interface

Loopback is not set

Media type is twisted pair, loopback not set, promiscuous mode set

Speed Negotiation, Duplex Negotiation, link type is autonegotiation

Output flow-control is disabled, input flow-control is disabled

Unknown-speed mode, unknown-duplex mode

Link speed type is autonegotiation, link duplex type is autonegotiation

Flow-control is not enabled

Maximum frame length: 9216

Allow jumbo frames to pass

Broadcast max-ratio: 100%

Multicast max-ratio: 100%

Unicast max-ratio: 100%

PVID: 10

MDI type: Automdix

Port link-type: Access

Tagged VLANs: None

Untagged VLANs: 10

Last link flapping: Never

Last clearing of counters: Never

Current system time:2021-06-16 09:42:57 Beijing+08:00:00

Last time when physical state changed to up:-

Last time when physical state changed to down:2021-06-11 09:53:06 Beijing+08:00:

Peak input rate: 0 bytes/sec, at 00-00-00 00:00:00

Peak output rate: 0 bytes/sec, at 00-00-00 00:00:00

Last 150 second input: 0 packets/sec 0 bytes/sec -%

Last 150 second 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, - throttles

0 CRC, 0 frame, 0 overruns, 0 aborts

0 ignored, - 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, - buffer failures

0 aborts, 0 deferred, 0 collisions, 0 late collisions

0 lost carrier, 0 no carrier

# Display brief information of all interfaces except subinterfaces.

<Sysname> display interface brief main

Brief information on interfaces in route mode:

Link: ADM - administratively down; Stby - standby

Protocol: (s) – spoofing

Interface Link Protocol Primary IP Description

GE1/0/1 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

GE1/0/2 DOWN auto A A 1

# Display brief information about all interfaces except subinterfaces, including the complete interface descriptions.

<Sysname> display interface brief description main

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

GE1/0/3 UP auto F(a) A 1 aaaaaaaaaaaaaaaaaaaaaaaaaaaaa

aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

# Display information about interfaces (except subinterfaces) in DOWN state and the causes.

<Sysname> display interface brief down main

Brief information on interfaces in route mode:

Link: ADM - administratively down; Stby - standby

Interface Link Cause

GE1/0/1 DOWN Not connected

Vlan2 DOWN Not connected

Brief information on interfaces in bridge mode:

Link: ADM - administratively down; Stby - standby

Interface Link Cause

GE1/0/2 DOWN Not connected

For description on the display interface main command output, see Table 4 and Table 5.

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 }

The following compatibility matrix shows the support of hardware platforms for this command:

Models	Command compatibility
CSAP-NTA-100, CSAP-NTA-200, CSAP-NTA-AK375	Yes
CSAP-NTA-300, CSAP-NTA-400, CSAP-NTA-500, CSAP-NTA-600	Yes
CSAP-NTA-V200, CSAP-NTA-V1000	No

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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 all interfaces.

Usage guidelines

If you do not specify an interface type, this command displays information about dropped packets on all interfaces on the device.

If you specify an interface type but do not specify an interface number, this command displays information about dropped packets on all interfaces of the specified type.

Examples

# Display information about dropped packets on GigabitEthernet 1/0/1.

<Sysname> display packet-drop interface gigabitethernet 1/0/1

GigabitEthernet1/0/1:

Packets dropped due to runt frame: 0

Packets dropped due to packet too long: 0

Packets dropped due to align: 0

Packets dropped due to under run: 0

Packets dropped due to over run: 0

Packets dropped due to CRC: 0

Packets dropped due to no buffer: 0

Packets dropped due to dribble: 0

Packets dropped due to lost carriers: 0

Packets dropped due to tx collision: 0

Packets dropped due to defered: 0

Packets dropped due to MAC fileter: 0

Packets dropped due to cpu receive: 0

Packets dropped due to create mbuf: 0

# Display the summary of dropped packets on all interfaces.

<Sysname> display packet-drop summary

All interfaces:

Packets dropped due to full GBP or insufficient bandwidth: 301

Packets dropped due to Fast Filter Processor (FFP): 261

Packets dropped due to broadcast-suppression: 301

Packets dropped due to unicast-suppression: 215

Packets dropped due to multicast-suppression: 241

Packets dropped due to Tx packet aging: 246

Table 7 Command output

Field	Description
Packets dropped due to full GBP or insufficient bandwidth	Packets that are dropped because the buffer is used up or the bandwidth is insufficient.
Packets dropped due to Fast Filter Processor (FFP)	Packets that are filtered out.
Packets dropped due to rate-limit	Packets that are dropped due to the rate limit set on the device.
Packets dropped due to broadcast-suppression	Packets that are dropped due to broadcast suppression.
Packets dropped due to unicast-suppression	Packets that are dropped due to unknown unicast suppression.
Packets dropped due to multicast-suppression	‌Packets that are dropped due to multicast suppression.
Packets dropped due to Tx packet aging	Outbound packets that are timed out.

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duplex

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

Use undo duplex to restore the default.

Syntax

duplex { auto | full | half }

undo duplex

Default

Ethernet interfaces operate in autonegotiation mode.

Views

Ethernet interface view

Predefined user roles

network-admin

Parameters

auto: Configures the interface to autonegotiate the duplex mode with the peer.

The following compatibility matrix shows the support of hardware platforms for this parameter:

Models	Parameter compatibility
CSAP-NTA-100, CSAP-NTA-200, CSAP-NTA-AK375	Yes
CSAP-NTA-300, CSAP-NTA-400, CSAP-NTA-500, CSAP-NTA-600	Yes
CSAP-NTA-V200, CSAP-NTA-V1000	No

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full: Configures the interface to operate in full duplex mode. In this mode, the interface can receive and transmit packets simultaneously.

half: Configures the interface to operate in half duplex mode. In this mode, the interface can only receive or transmit packets at a given time.

The following compatibility matrix shows the support of hardware platforms for this parameter:

Models	Parameter compatibility
CSAP-NTA-100, CSAP-NTA-200, CSAP-NTA-AK375	Yes
CSAP-NTA-300, CSAP-NTA-400, CSAP-NTA-500, CSAP-NTA-600	Yes
CSAP-NTA-V200, CSAP-NTA-V1000	No

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Examples

# Configure GigabitEthernet 1/0/1 to operate in full duplex mode.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] 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

The following compatibility matrix shows the support of hardware platforms for this command:

Models	Compatibility
CSAP-NTA-100, CSAP-NTA-200, CSAP-NTA-AK375	Yes
CSAP-NTA-300, CSAP-NTA-400, CSAP-NTA-500, CSAP-NTA-600	Yes
CSAP-NTA-V200, CSAP-NTA-V1000	No

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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 GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] 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

System view

Ethernet interface view

The following compatibility matrix shows the support of hardware platforms for views:

Models	Views
CSAP-NTA-100, CSAP-NTA-200, CSAP-NTA-AK375	System view and Ethernet interface view
CSAP-NTA-300, CSAP-NTA-400, CSAP-NTA-500, CSAP-NTA-600	System view and Ethernet interface view
CSAP-NTA-V200, CSAP-NTA-V1000	System view

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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.

Usage guidelines

The statistics polling interval configured in system view takes effect on all Ethernet interface.

The statistics polling interval configured in Ethernet interface view takes effect only on the current interface.

For an interface, the configuration in its Ethernet interface view takes priority. The configuration in system view is used when the configuration in Ethernet interface view is the default.

Examples

# Set the statistics polling interval to 100 seconds.

<Sysname> system-view

[Sysname] flow-interval 100

# Set the statistics polling interval to 100 seconds on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] flow-interval 100

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.

Examples

# Enter the view of GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1]

# Create Ethernet subinterface GigabitEthernet 1/0/1.1 and enter its view.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1.1

[Sysname-GigabitEthernet1/0/1.1]

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 a specific length to pass through. The length of jumbo frames that are allowed to pass through varies by device model.

Models	Default
CSAP-NTA-100, CSAP-NTA-200, CSAP-NTA-AK375	9216
CSAP-NTA-300, CSAP-NTA-400, CSAP-NTA-500, CSAP-NTA-600	9216
CSAP-NTA-V200, CSAP-NTA-V1000	16384

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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 following compatibility matrix shows the value ranges for the maximum jumbo frame size:

Models	Value range
CSAP-NTA-100, CSAP-NTA-200, CSAP-NTA-AK375	9216
CSAP-NTA-300, CSAP-NTA-400, CSAP-NTA-500, CSAP-NTA-600	9216
CSAP-NTA-V200, CSAP-NTA-V1000	1536 to 16384

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Usage guidelines

If you execute this command multiple times, the most recent configuration takes effect.

Examples

# Allow jumbo frames to pass through GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] jumboframe enable

loopback

CAUTION:

After you enable loopback testing on an Ethernet interface, the interface does not forward data traffic.

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Use loopback to enable loopback testing on an Ethernet interface.

Use undo loopback to disable loopback testing on an Ethernet interface.

Syntax

loopback { external | internal }

undo loopback

The following compatibility matrix shows the support of hardware platforms for this command:

Models	Command compatibility
CSAP-NTA-100, CSAP-NTA-200, CSAP-NTA-AK375	Yes
CSAP-NTA-300, CSAP-NTA-400, CSAP-NTA-500, CSAP-NTA-600	Yes
CSAP-NTA-V200, CSAP-NTA-V1000	No

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Default

Loopback testing is disabled on an Ethernet interface.

Views

Ethernet interface view

Predefined user roles

network-admin

Parameters

external: Enables external loopback testing on the Ethernet interface.

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 and loopback commands are mutually exclusive.

Examples

# Enable internal loopback testing on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] 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

The following compatibility matrix shows the support of hardware platforms for this command:

Models	Command compatibility
CSAP-NTA-100, CSAP-NTA-200, CSAP-NTA-AK375	Yes
CSAP-NTA-300, CSAP-NTA-400, CSAP-NTA-500, CSAP-NTA-600	Yes
CSAP-NTA-V200, CSAP-NTA-V1000	No

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Default

Ethernet interfaces do not suppress multicast traffic.

Views

Ethernet interface view

Predefined user roles

network-admin

Parameters

ratio: Sets the multicast suppression threshold as a percentage of the interface bandwidth. The value range for this argument (in percentage) is 0 to 100. A smaller value means that less multicast traffic is allowed to pass through.

pps max-pps: Specifies the maximum number of multicast packets that the interface can forward per second. The value range for the max-pps argument (in pps) is 0 to 1.4881 × the interface bandwidth.

kbps max-kbps: Specifies the maximum number of kilobits of multicast traffic that the Ethernet interface can forward per second. The value range for this argument (in kbps) is 0 to the interface bandwidth.

Usage guidelines

The multicast storm suppression feature limits the size of multicast traffic to a threshold on an interface. When the multicast traffic on the interface exceeds this threshold, the system drops packets until the traffic drops below this threshold.

Both the storm-constrain command and the multicast-suppression command can suppress multicast storms on a port. The multicast-suppression command uses the chip to physically suppress multicast traffic. It has less influence on the device performance than the storm-constrain command, which uses software to suppress multicast traffic.

For the traffic suppression result to be determined, do not configure both the storm-constrain multicast command and the multicast-suppression command on an interface.

Examples

# Set the multicast storm suppression threshold to 10000 kbps on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] multicast-suppression kbps 10000

Related commands

broadcast-suppression

unicast-suppression

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 Ethernet interface operates in Layer 3 mode.

Views

Ethernet interface view

Predefined user roles

network-admin

Parameters

bridge: Specifies the Layer 2 mode.

route: Specifies the Layer 3 mode.

Usage guidelines

CAUTION:

Changing the link mode of an Ethernet interface also restores all commands (except shutdown and combo enable) on the Ethernet interface to their defaults in the new link mode.

Interfaces operate differently depending on the hardware structure of interface cards. For a device:

· Some Ethernet interfaces can operate only as Layer 2 Ethernet interfaces (in bridge mode).

· Some Ethernet interfaces can operate only as Layer 3 Ethernet interfaces (in route mode).

· Some 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 or route for these Ethernet interfaces.

For a device supporting interface grouping, changing the link mode of interfaces in a group restores all interfaces in the group to the default speed.

Examples

# Configure GigabitEthernet 1/0/1 to operate in Layer 2 mode.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] port link-mode bridge

reset counters interface

Use reset counters interface to clear the interface statistics.

Syntax

reset counters interface [ interface-type [ interface-number | interface-number.subnumber ] ]

Views

User view

Predefined user roles

network-admin

Parameters

interface-type: Specifies an interface type.

interface-number: Specifies an interface number.

Usage guidelines

Use this command to clear history statistics if you want to collect traffic statistics for a specific time period.

If you do not specify an interface type, this command clears statistics for all interfaces.

If you specify an interface type but do not specify an interface number, this command clears statistics for all interfaces of the specified type.

Examples

# Clear the statistics for GigabitEthernet 1/0/1.

<Sysname> reset counters interface gigabitethernet 1/0/1

Related commands

display counters interface

display counters rate interface

display interface

reset ethernet statistics

Use reset ethernet statistics to clear the Ethernet module statistics.

Syntax

CSAP-NTA-V200[V1000]:

reset ethernet statistics

CSAP-NTA-100[200][300][400][500][600][AK375]:

reset ethernet statistics [ slot slot-number ]

Views

User view

Predefined user roles

network-admin

Parameters

slot slot-number: Specifies an IRF member device by its member ID. If you do not specify a member device, this command clears statistics for all IRF member devices. (CSAP-NTA-100[200][300][400][500][600][AK375])

Examples

# (CSAP-NTA-V200[V1000])Clear the Ethernet module statistics.

<Sysname> reset ethernet statistics

# (CSAP-NTA-100[200][300][400][500][600][AK375])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 ] ]

The following compatibility matrix shows the support of hardware platforms for this command:

Models	Command compatibility
CSAP-NTA-100, CSAP-NTA-200, CSAP-NTA-AK375	Yes
CSAP-NTA-300, CSAP-NTA-400, CSAP-NTA-500, CSAP-NTA-600	Yes
CSAP-NTA-V200, CSAP-NTA-V1000	No

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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 GigabitEthernet 1/0/1.

<Sysname> reset packet-drop interface gigabitethernet 1/0/1

# Clear dropped packet statistics for all interfaces.

<Sysname> reset packet-drop interface

Related commands

display packet-drop

shutdown

Use shutdown to shut down an Ethernet interface or subinterface.

Use undo shutdown to bring up an Ethernet interface or subinterface.

Syntax

shutdown

undo shutdown

Default

An Ethernet interface or subinterface is up.

Views

Ethernet interface view

Ethernet subinterface view

Predefined user roles

network-admin

Usage guidelines

CAUTION:

Executing the shutdown command on an interface will disconnect the link of the interface and interrupt communication. Use this command with caution.

Some interface configurations might require an interface restart before taking effect.

The shutdown and loopback commands are mutually exclusive.

Examples

# Shut down and then bring up GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] shutdown

[Sysname-GigabitEthernet1/0/1] undo shutdown

# Shut down and then bring up GigabitEthernet 1/0/1.1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1.1

[Sysname-GigabitEthernet1/0/1.1] shutdown

[Sysname-GigabitEthernet1/0/1.1] undo shutdown

speed

Use speed to set the speed of an Ethernet interface.

Use undo speed to restore the default.

Syntax

speed { 10 | 100 | 1000 | auto }

undo speed

Default

An Ethernet interface autonegotiates its speed.

Views

Ethernet interface view

Predefined user roles

network-admin

Parameters

10: Sets the interface speed to 10 Mbps.

The following compatibility matrix shows the support of hardware platforms for this parameter:

Models	Parameter compatibility
CSAP-NTA-100, CSAP-NTA-200, CSAP-NTA-AK375	Yes
CSAP-NTA-300, CSAP-NTA-400, CSAP-NTA-500, CSAP-NTA-600	Yes
CSAP-NTA-V200, CSAP-NTA-V1000	No

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100: Sets the interface speed to 100 Mbps.

The following compatibility matrix shows the support of hardware platforms for this parameter:

Models	Parameter compatibility
CSAP-NTA-100, CSAP-NTA-200, CSAP-NTA-AK375	Yes
CSAP-NTA-300, CSAP-NTA-400, CSAP-NTA-500, CSAP-NTA-600	Yes
CSAP-NTA-V200, CSAP-NTA-V1000	No

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1000: Sets the interface speed to 1000 Mbps.

auto: Enables the interface to negotiate a speed with its peer.

The following compatibility matrix shows the support of hardware platforms for this parameter:

Models	Parameter compatibility
CSAP-NTA-100, CSAP-NTA-200, CSAP-NTA-AK375	Yes
CSAP-NTA-300, CSAP-NTA-400, CSAP-NTA-500, CSAP-NTA-600	Yes
CSAP-NTA-V200, CSAP-NTA-V1000	No

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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 GigabitEthernet 1/0/1 to autonegotiate the speed.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] speed auto

sub-interface rate-statistic

Use sub-interface rate-statistic to enable rate statistics collection for the subinterfaces of an Ethernet interface.

Use undo sub-interface rate-statistic to disable rate statistics collection for the subinterfaces of an Ethernet interface.

Syntax

sub-interface rate-statistic

undo sub-interface rate-statistic

Default

The system does not collect rate statistics for the subinterfaces of an Ethernet interface.

Views

Ethernet interface view

Predefined user roles

network-admin

Usage guidelines

This command is resource intensive. When you use this command, make sure you fully understand its impact on system performance.

Examples

# Enable rate statistics collection for the subinterfaces of GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] 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

The following compatibility matrix shows the support of hardware platforms for this command:

Models	Compatibility
CSAP-NTA-100, CSAP-NTA-200, CSAP-NTA-AK375	Yes
CSAP-NTA-300, CSAP-NTA-400, CSAP-NTA-500, CSAP-NTA-600	Yes
CSAP-NTA-V200, CSAP-NTA-V1000	No

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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 GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] unicast-suppression kbps 10000

Related commands

broadcast-suppression

· multicast-suppression

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 ] [ interface interface-type interface-number ]

The following compatibility matrix shows the support of hardware platforms for this command:

Models	Command compatibility
CSAP-NTA-100, CSAP-NTA-200, CSAP-NTA-AK375	Yes
CSAP-NTA-300, CSAP-NTA-400, CSAP-NTA-500, CSAP-NTA-600	Yes
CSAP-NTA-V200, CSAP-NTA-V1000	No

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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.

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 the broadcast or multicast keyword, 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 - unicast;

FW - forwarding

Flow Statistic Interval: 5 (in seconds)

Port Type Lower Upper Unit Mode Status Trap Log StateChg

--------------------------------------------------------------------------------

GE1/0/1 BC 1000 10000 pps shutdown FW on on 0

Table 8 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—Unicast packets. This field is not supported in the current software version.
Lower	Lower storm control threshold.
Upper	Upper storm control threshold.
Unit	Storm control threshold unit in pps.
Mode	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.
StateChg	Number of forwarding state changes of the interface. When the StateChg field reaches 65535, it resets automatically.

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mdix-mode

IMPORTANT:

Fiber ports do not support this command.

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Use mdix-mode to configure the Medium Dependent Interface Cross-Over (MDIX) mode of an Ethernet interface.

Use undo mdix-mode to restore the default.

Syntax

mdix-mode { automdix | mdi| mdix }

undo mdix-mode

The following compatibility matrix shows the support of hardware platforms for this command:

Models	Command compatibility
CSAP-NTA-100, CSAP-NTA-200, CSAP-NTA-AK375	Yes
CSAP-NTA-300, CSAP-NTA-400, CSAP-NTA-500, CSAP-NTA-600	Yes
CSAP-NTA-V200, CSAP-NTA-V1000	No

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Default

Ethernet interfaces operate in automdix mode.

Views

Layer 2 Ethernet interface view

Predefined user roles

network-admin

Parameters

automdix: Specifies that the interface negotiates pin roles with its peer.

mdi: Specifies that pins 1 and 2 are transmit pins and pins 3 and 6 are receive pins.

mdix: Specifies that pins 1 and 2 are receive pins and pins 3 and 6 are transmit pins.

Examples

# Configure GigabitEthernet 1/0/1 to operate in automdix mode.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] mdix-mode automdix

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 } pps upperlimit lowerlimit

undo storm-constrain { all | broadcast | multicast }

The following compatibility matrix shows the support of hardware platforms for this command:

Models	Command compatibility
CSAP-NTA-100, CSAP-NTA-200, CSAP-NTA-AK375	Yes
CSAP-NTA-300, CSAP-NTA-400, CSAP-NTA-500, CSAP-NTA-600	Yes
CSAP-NTA-V200, CSAP-NTA-V1000	No

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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: multicast and broadcast.

broadcast: Enables or disables broadcast storm control.

multicast: Enables or disables multicast storm control.

pps: Sets storm control thresholds in pps.

upperlimit: Sets the upper threshold. If you specify the pps keyword, the value range for the upperlimit argument is 0 to 1.4881 × the interface bandwidth.

lowerlimit: Sets the lower threshold. If you specify the pps keyword, the value range for the lowerlimit argument is 0 to 1.4881 × the interface bandwidth.

Usage guidelines

After you configure storm control for a type of traffic, the device collects the statistics for the type of traffic at the interval configured by using the storm-constrain interval command. When the type of traffic exceeds its upper threshold, the interface takes an action configured by using the storm-constrain control command.

The storm-constrain, broadcast-suppression, multicast-suppression, and unicast-suppression commands can suppress storms on an interface. The broadcast-suppression, multicast-suppression, and unicast-suppression commands use the chip to physically suppress traffic. They have less influence on the device performance than the storm-constrain command, which uses software to suppress traffic.

For the traffic suppression result to be determined, do not configure both storm control and storm suppression for the same type of traffic.

When configuring this command, make sure upperlimit is greater than lowerlimit.

Examples

# Enable broadcast storm control on GigabitEthernet 1/0/1 and set the upper and lower thresholds to 200 pps and 150 pps, respectively.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] storm-constrain broadcast pps 200 150

Related commands

storm-constrain control

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 (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

The following compatibility matrix shows the support of hardware platforms for this command:

Models	Command compatibility
CSAP-NTA-100, CSAP-NTA-200, CSAP-NTA-AK375	Yes
CSAP-NTA-300, CSAP-NTA-400, CSAP-NTA-500, CSAP-NTA-600	Yes
CSAP-NTA-V200, CSAP-NTA-V1000	No

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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 the type of traffic exceeding the upper threshold and forwards other types of traffic. Even though the interface does not forward the blocked type of traffic, it still counts the traffic. When the blocked type of traffic drops below the lower threshold, the port begins to forward the traffic.

shutdown: Goes down automatically and stops forwarding any traffic. When the type of traffic exceeding the upper threshold drops below the lower threshold, the interface does not forward traffic. To bring up the interface, use the undo shutdown command or disable storm control on the interface.

Examples

# Configure GigabitEthernet 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 gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] 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

The following compatibility matrix shows the support of hardware platforms for this command:

Models	Command compatibility
CSAP-NTA-100, CSAP-NTA-200, CSAP-NTA-AK375	Yes
CSAP-NTA-300, CSAP-NTA-400, CSAP-NTA-500, CSAP-NTA-600	Yes
CSAP-NTA-V200, CSAP-NTA-V1000	No

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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 GigabitEthernet 1/0/1 to output log messages when it detects storm control threshold events.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] 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

The following compatibility matrix shows the support of hardware platforms for this command:

Models	Command compatibility
CSAP-NTA-100, CSAP-NTA-200, CSAP-NTA-AK375	Yes
CSAP-NTA-300, CSAP-NTA-400, CSAP-NTA-500, CSAP-NTA-600	Yes
CSAP-NTA-V200, CSAP-NTA-V1000	No

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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 GigabitEthernet 1/0/1 to send traps when it detects storm control threshold events.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] 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

The following compatibility matrix shows the support of hardware platforms for this command:

Models	Command compatibility
CSAP-NTA-100, CSAP-NTA-200, CSAP-NTA-AK375	Yes
CSAP-NTA-300, CSAP-NTA-400, CSAP-NTA-500, CSAP-NTA-600	Yes
CSAP-NTA-V200, CSAP-NTA-V1000	No

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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

storm-constrain control

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

Predefined user roles

network-admin

Parameters

mac-address: Specifies a MAC address in the format of H-H-H.

Examples

# Set the MAC address of GigabitEthernet 1/0/1 to 0001-0001-0001.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] mac-address 1-1-1

mac-address-filter enable

Use mac-address-filter enable to enable destination MAC filtering.

Use undo mac-address-filter enable to disable destination MAC filtering.

Syntax

mac-address-filter enable

undo mac-address-filter enable

The following compatibility matrix shows the support of hardware platforms for this command:

Models	Command compatibility
CSAP-NTA-100, CSAP-NTA-200, CSAP-NTA-AK375	Yes
CSAP-NTA-300, CSAP-NTA-400, CSAP-NTA-500, CSAP-NTA-600	Yes
CSAP-NTA-V200, CSAP-NTA-V1000	No

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Views

System view

Default

Destination MAC filtering is enabled.

Predefined user roles

network-admin

Usage guidelines

This feature takes effect only on Layer 3 Ethernet interfaces/subinterfaces and Layer 3 aggregate interfaces. These interfaces are referred to as interfaces in this command.

Typically, use the default settings.

With this feature enabled, when an interface receives a packet, the interface operates as follows:

· If the destination MAC address of the packet is the MAC address of the interface, the interface accepts and processes the packet.

· If the destination MAC address of the packet is not the MAC address of the interface, the interface drops the packet.

With this feature disabled, an interface accepts and processes a packet, without checking the destination MAC address of the packet.

Examples

# Enable destination MAC filtering.

<Sysname> system-view

[Sysname] mac-address-filter enable

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 varies by interface type.

The following compatibility matrix shows the value ranges for the size argument:

Models	Value range
CSAP-NTA-100, CSAP-NTA-200, CSAP-NTA-AK375	46 to 1560
CSAP-NTA-300, CSAP-NTA-400, CSAP-NTA-500, CSAP-NTA-600	46 to 1560
CSAP-NTA-V200, CSAP-NTA-V1000	46 to 9216

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Usage guidelines

A smaller MTU size results in more fragments. When you set the MTU for an interface, consider QoS queue lengths, for example, consider that the default FIFO queue length is 75. To prevent a too small MTU from causing packet drops in QoS queuing, you can perform one of the following configurations:

· Tune the MTU with the mtu command.

· Tune QoS queue lengths with the qos fifo queue-length command.

For more information about the qos fifo queue-length command, see ACL and QoS Command Reference.

Examples

# Set the MTU to 1430 bytes for GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] mtu 1430

# Set the MTU to 1430 bytes for GigabitEthernet 1/0/1.1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1.1

[Sysname-GigabitEthernet1/0/1.1] mtu 1430

traffic-statistic enable

Use traffic-statistic enable to enable subinterface rate statistics collection for a Layer 3 Ethernet subinterface.

Use undo traffic-statistic enable to disable subinterface rate statistics collection for a Layer 3 Ethernet subinterface.

Syntax

traffic-statistic enable

undo traffic-statistic enable

The following compatibility matrix shows the support of hardware platforms for this command:

Models	Command compatibility
CSAP-NTA-100, CSAP-NTA-200, CSAP-NTA-AK375	Yes
CSAP-NTA-300, CSAP-NTA-400, CSAP-NTA-500, CSAP-NTA-600	Yes
CSAP-NTA-V200, CSAP-NTA-V1000	No

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Default

Subinterface rate statistics collection is disabled for a Layer 3 Ethernet subinterface.

Views

Layer 3 Ethernet subinterface view

Predefined user roles

network-admin

Usage guidelines

This command is resource intensive. The system becomes busy and the CPU usage increases when you enable this feature on a large number of Ethernet subinterfaces or set a shorter interval by using the flow-interval command.

You can use the display interface or display counters command to display the subinterface rate statistics.

Examples

# Enable subinterface rate statistics collection for GigabitEthernet 1/0/1.1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1.1

[Sysname-GigabitEthernet1/0/1.1] traffic-statistic enable

Related commands

display counters

display interface

flow-interval

05-Interface Command Reference

flow-interval

reset counters interface

display storm-constrain

mdix-mode

storm-constrain

mac-address-filter enable

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