· The switch does not support Layer 3 Ethernet interfaces, Layer 3 Ethernet subinterfaces, Layer 3 aggregate interfaces, and Layer 3 aggregate subinterfaces when it works in standard mode. For more information about system working modes, see Fundamentals Configuration Guide.

· The switch operates in IRF or standalone (the default) mode. For more information about the IRF mode, see IRF Configuration Guide.

· For more information about the models of the Ethernet interface cards mentioned in the document, see the installation guide.

General Ethernet interface and subinterface configuration commands

alarm-detect

Syntax

alarm-detect { rdi | sd | sf } action link-down

undo alarm-detect { rdi | sd | sf }

Views

Ten-GigabitEthernet interface view

Default level

2: System level

Parameters

rdi: Specifies the Remote Defect Indication (RDI) alarm threshold.

sd: Specifies the Signal Degrade (SD) alarm threshold.

sf: Specifies the Signal Fail (SF) alarm threshold.

action: Specifies the protective action when the detected signals exceed the specified alarm threshold.

link-down: Brings down the link of the interface.

Description

Use the alarm-detect command to configure the protective action for alarms when the 10-GE interface is operating in WAN mode.

Use the undo alarm-detect command to restore the default.

By default, no protective action is specified for alarms.

This command is not available on a 10-GE interface operating in LAN mode.

Related commands: threshold and port-mode.

NOTE:

This command is available only on a 10-GE interface operating in WAN mode.

Examples

# Configure the system to bring down the link of interface 10GE 4/1/1 when the detected signals exceed the specified alarm threshold on the interface.

<Sysname> system-view

[Sysname] interface Ten-GigabitEthernet4/1/1

[Sysname-Ten-GigabitEthernet4/1/1] port-mode wan

[Sysname-Ten-GigabitEthernet4/1/1] alarm-detect sd action link-down

bandwidth

Syntax

bandwidth bandwidth-value

undo bandwidth

View

Ethernet interface view

Default level

2: System level

Parameters

bandwidth-value: Sets the intended bandwidth, ranging from 1 to 4,294,967,295 kbps.

Description

Use the bandwidth command to set the intended bandwidth for an Ethernet interface.

Use the undo bandwidth command to cancel the configuration.

You can obtain the intended bandwidth of an interface by querying the ifspeed value of the MIB node with third-party software.

The intended bandwidth is used by network management systems for monitoring bandwidth, but does not affect the actual bandwidth of the interface.

Examples

# Set the intended bandwidth to 10,000 kbps for interface GigabitEthernet 3/0/1.

<Sysname> system-view

[Sysname] interface GigabitEthernet 3/0/1

[Sysname-GigabitEthernet3/0/1] bandwidth 10000

combo enable

Syntax

combo enable { copper | fiber }

View

Ethernet interface view (combo interface)

Default level

2: System level

Parameters

copper: Activates the copper combo port.

fiber: Activates the fiber combo port.

Description

Use the combo enable command to activate the copper or fiber combo port.

By default, the copper combo port is activated.

Combo interfaces are logical interfaces. A combo interface comprises one fiber combo port and one copper combo port. The two ports cannot work simultaneously. If one port is enabled, the other port is automatically disabled.

In an IRF fabric, if only one physical interface is bound to the IRF port, and the physical interface is a combo interface, you cannot use the combo enable command to activate the corresponding combo interface on the slave device.

Examples

# Activate the copper combo port of combo interface GigabitEthernet 3/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 3/0/1

[Sysname-GigabitEthernet3/0/1] combo enable copper

# Activate the fiber combo port of combo interface GigabitEthernet 3/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 3/0/1

[Sysname-GigabitEthernet3/0/1] combo enable fiber

default

Syntax

default

View

Ethernet interface view, Ethernet subinterface view

Default level

2: System level

Parameters

None

Description

Use the default command to restore the default settings for an Ethernet interface or subinterface.

This command might fail to restore the default settings for some commands for reasons such as command dependencies and system restrictions. You can use the display this command in interface view to check for these commands, and perform their undo forms or follow command reference to individually restore their default settings. If your restoration attempt still fails, follow the error message to resolve the problem.

CAUTION:

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

Examples

# Restore the default settings for interface GigabitEthernet 3/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 3/0/1

[Sysname-GigabitEthernet3/0/1] default

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

# Restore the default settings for subinterface GigabitEthernet 3/0/1.1.

<Sysname> system-view

[Sysname] interface gigabitethernet 3/0/1.1

[Sysname-GigabitEthernet3/0/1.1] default

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

description

Syntax

description text

undo description

View

Ethernet interface view, Ethernet subinterface view

Default level

2: System level

Parameters

text: Specifies the interface description, a string of 1 to 80 characters. The string can include case-sensitive letters, digits, special characters (including ~ ! @ # $ % ^ & * ( ) - _ + = { } [ ] | \ : ; " ' < > , . /), spaces, and other Unicode characters and symbols.

NOTE:

· Each Unicode character takes the space of two regular characters.

· To use Unicode characters or symbols in an interface description, install the specific input method editor and log in to the switch through remote login software that supports the character type.

· When the length of a description string reaches or exceeds the maximum line width on the terminal software, the software starts a new line, possibly breaking a Unicode character into two. As a result, garbled characters may be displayed at the end of a line.

Description

Use the description command to change the description of the interface.

Use the undo description command to restore the default.

The default description of an interface is the interface name plus Interface. For example, GigabitEthernet3/0/1 Interface.

Related commands: display interface.

Examples

# Change the description of interface GigabitEthernet 3/0/1 to lanswitch-interface.

<Sysname> system-view

[Sysname] interface gigabitethernet 3/0/1

[Sysname-GigabitEthernet3/0/1] description lanswitch-interface

display counters

Syntax

display counters { inbound | outbound } interface [ interface-type ] [ | { begin | exclude | include } regular-expression ]

View

Any view

Default level

1: Monitor level

Parameters

inbound: Displays inbound traffic statistics.

outbound: Displays outbound traffic statistics.

interface-type: Specifies an interface type. If the RPR interface type is specified, broadcast and multicast packets are regarded as multicast packets.

|: Filters command output by specifying a regular expression. For more information about regular expressions, see Fundamentals Configuration Guide.

begin: Displays the first line that matches the specified regular expression and all lines that follow.

include: Displays all lines that match the specified regular expression.

regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.

Description

Use the display counters command to display traffic statistics for interfaces.

· If an interface type is specified, this command displays traffic statistics for all interfaces of the specified type.

· If no interface type is specified, this command displays traffic statistics for all interfaces that have traffic counters.

Examples

# Display inbound traffic statistics for all GigabitEthernet interfaces.

<Sysname> display counters inbound interface gigabitethernet

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

GE3/0/1 100 100 0 0

GE3/0/2 0 0 0 0

GE3/0/3 Overflow Overflow Overflow Overflow

GE3/0/4 0 0 0 0

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

--: not supported.

Table 1 Output description

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. On an RPR physical port, all broadcast and multicast packets received or sent are displayed as multicast packets.
Multicast (pkts)	Total number of multicast packets received or sent through the interface. On an RPR physical port, all broadcast and multicast packets received or sent are displayed as multicast packets.
Err (pkts)	Total number of error packets received or sent through the interface.
Overflow: more than 14 decimal digits(7 digits for column "Err").	The command displays Overflow in any of the following cases: · The data length of an error statistic is greater than 7 decimal digits. · The data length of a non-error statistic is greater than 14 decimal digits.
--: not supported.	The statistical item is not supported.

display counters rate

Syntax

display counters rate { inbound | outbound } interface [ interface-type ] [ | { begin | exclude | include } regular-expression ]

View

Any view

Default level

1: Monitor level

Parameters

inbound: Displays inbound traffic rate statistics.

outbound: Displays outbound traffic rate statistics.

interface-type: Specifies an interface type. If the RPR interface type is specified, broadcast and multicast packets are regarded as multicast packets.

|: Filters command output by specifying a regular expression. For more information about regular expressions, see Fundamentals Configuration Guide.

begin: Displays the first line that matches the specified regular expression and all lines that follow.

include: Displays all lines that match the specified regular expression.

regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.

Description

Use the display counters rate command to display traffic rate statistics over the last sampling interval.

The statistics cover only interfaces in up state.

· If an interface type is specified, the command displays traffic rate statistics for all up interfaces of the specified type.

· If no interface type is specified, the command displays traffic rate statistics for all up interfaces that have traffic counters.

The default sampling interval is 300 seconds. You can change it with the flow-interval command.

Related commands: flow-interval.

Examples

# Display the inbound traffic rate statistics for all GigabitEthernet interfaces.

<Sysname> display counters rate inbound interface gigabitethernet

Interface Total(pkts/sec) Broadcast(pkts/sec) Multicast(pkts/sec)

GE3/0/1 200 100 100

GE3/0/2 300 200 100

GE3/0/3 300 200 100

Overflow: more than 14 decimal digits.

--: not supported.

Table 2 Output description

Field	Description
Interface	Abbreviated interface name.
Total (pkts/sec)	Average rate (in packets per second) of receiving or sending packets during the sampling interval.
Broadcast (pkts/sec)	Average rate (packets per second) of receiving or sending broadcast packets during the sampling interval. On an RPR physical port, all broadcast and multicast packets received or sent are displayed as multicast packets.
Multicast (pkts/sec)	Average rate (packets per second) of receiving or sending multicast packets during the sampling interval. On an RPR physical port, all broadcast and multicast packets received or sent are displayed as multicast packets.
Overflow: more than 14 decimal digits.	The command displays Overflow in any of the following cases: · The data length of an error statistic is greater than 7 decimal digits. · The data length of a non-error statistic is greater than 14 decimal digits.
--: not supported.	The statistical item is not supported.

display interface

Syntax

display interface [ interface-type ] [ brief [ down ] ] [ | { begin | exclude | include } regular-expression ]

display interface interface-type { interface-number | interface-number.subnumber } [ brief ] [ | { begin | exclude | include } regular-expression ]

View

Any view

Default level

1: Monitor level

Parameters

interface-type: Specifies an interface type.

interface-number: Specifies an interface number.

interface-number.subnumber: Specifies a subinterface number, where interface-number is the number of a Layer 3 Ethernet interface, and subnumber is the number of a subinterface created under the interface. The subnumber argument ranges from 1 to 4093.

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

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

|: Filters command output by specifying a regular expression. For more information about regular expressions, see Fundamentals Configuration Guide.

begin: Displays the first line that matches the specified regular expression and all lines that follow.

include: Displays all lines that match the specified regular expression.

regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.

Description

Use the display interface command to display Ethernet interface information.

· If no interface type is specified, this command displays information about all interfaces.

· If an interface type is specified but no interface number or subinterface number is specified, this command displays information about all interfaces of that type.

Related commands: interface.

Examples

1. # Display information about Layer 3 interface GigabitEthernet3/0/1.

<Sysname> display interface gigabitethernet 3/0/1

GigabitEthernet3/0/1 current state: UP

Line protocol current state: UP

Description: GigabitEthernet5/0/2 Interface

The Maximum Transmit Unit is 1500

Link delay is 1(sec)

Internet Address is 192.168.10.2/24 Primary

IP Packet Frame Type: PKTFMT_ETHNT_2, Hardware Address: 00e0-fc00-96ad

IPv6 Packet Frame Type: PKTFMT_ETHNT_2, Hardware Address: 00e0-fc00-96ad

Media type is twisted pair, Port hardware type is 1000_BASE_T

Loopback is not set

1000Mbps-speed mode, full-duplex mode

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

Last 300 seconds output: 0 packets/sec 0 bytes/sec 0%

Input (total): 24 packets, 2264 bytes

2 broadcasts, 0 multicasts, - pauses

Input (normal): 24 packets, 2264 bytes

2 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): 27 packets, 2526 bytes

2 broadcasts, 0 multicasts, - pauses

Output (normal): 27 packets, 2526 bytes

2 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

Peak value of input: 0 bytes/sec, at 2011-04-02 08:46:44

Peak value of output: 0 bytes/sec, at 2011-04-02 08:46:44

2. # Display information about Layer 3 interface GigabitEthernet 3/0/1, which includes only the interface name and traffic statistics.

<Sysname> display interface gigabitethernet 3/0/1 | include current state:|bytes

GigabitEthernet3/0/1 current state: UP

Line protocol current state: UP

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

Last 300 seconds output: 0 packets/sec 0 bytes/sec 0%

Input (total): 51 packets, 4468 bytes

Input (normal): 51 packets, 4468 bytes

Output (total): 59 packets, 5074 bytes

Output (normal): 59 packets, 5074 bytes

Peak value of input: 0 bytes/sec, at 2011-04-02 08:46:44

Peak value of output: 0 bytes/sec, at 2011-04-02 08:46:44

Table 3 display interface command (in route mode) output description

Field	Description
GigabitEthernet3/0/1 current state	The state of the Ethernet interface: · DOWN ( Administratively )—The Ethernet interface was shut down with the shutdown command. The interface is administratively down. · DOWN ( Link-Aggregation interface down )—The Ethernet interface is physically down because the aggregate interface corresponding to the aggregation group to which the Ethernet interface belongs was shut down with the shutdown command. · DOWN—The Ethernet interface is administratively up but physically down (possibly because no physical link is present or the link has failed). · UP—The Ethernet interface is both administratively and physically up.
Line protocol current state	The link layer state of the interface: · DOWN—The interface is physically down. · UP—The interface is physically up.
Link delay	Physical state change suppression interval on an Ethernet interface.
Internet Address	IP address of the interface. If the interface is not configured with an IP address, this field changes to Internet protocol processing : disabled, indicating that IP packets cannot be processed.
IP Packet Frame Type	Encapsulation format for IPv4 packets.
IPv6 Packet Frame Type	Encapsulation format for IPv6 packets.
Media type	The physical medium, twisted pair or optical fiber.
loopback not set	The loopback testing function is disabled. For an interface configured with the loopback external or loopback internal command, this field changes to loopback is set.
Last clearing of counters	Time when the reset counters interface command was last used to clear the interface statistics. If the command was never used since the switch was started, this field displays Never.
Last 300 seconds input rate	Average input rate over the last 300 seconds in Bps, bps, and pps.
Last 300 seconds output rate	Average output rate over the last 300 seconds in Bps, bps, and pps.
Input	Input packets.
Output	Output packets.
Peak value of input	Peak input rate, in Bps.
Peak value of output	Peak output rate, in Bps.

3. # Display operating status information and related statistics of Layer 3 Ethernet subinterface GigabitEthernet 3/0/1.1.

<Sysname> display interface gigabitethernet 3/0/1.1

GigabitEthernet3/0/1.1 current state: DOWN

Line protocol current state: DOWN

Description: GigabitEthernet3/0/1.1 Interface

The Maximum Transmit Unit is 1500

Internet protocol processing : disabled

IP Packet Frame Type: PKTFMT_ETHNT_2, Hardware Address: 00e0-fc00-96c1

IPv6 Packet Frame Type: PKTFMT_ETHNT_2, Hardware Address: 00e0-fc00-96c1

Last clearing of counters: Never

Table 4 display interface command (in Layer 3 subinterface mode) output description

Field	Description
GigabitEthernet3/0/1.1 current state	The state of the Ethernet subinterface: · DOWN ( Administratively )—The Ethernet subinterface was shut down with the shutdown command. The interface is administratively down. · DOWN ( Link-Aggregation interface down )—The Ethernet subinterface is physically down because the aggregate interface corresponding to the aggregation group to which the subinterface belongs was shut down with the shutdown command. · DOWN—The Ethernet subinterface is administratively up but physically down (possibly because no physical link is present or the link has failed). · UP—The Ethernet subinterface is both administratively and physically up.
Line protocol current state	The link layer state of the subinterface: · DOWN—The interface is physically down. · UP—The interface is physically up.
Internet protocol processing	Disabled indicates that IP packets cannot be processed. For an interface configured with an IP address, this field changes to Internet Address is.
IP Packet Frame Type	Encapsulation format for IPv4 packets.
IPv6 Packet Frame Type	Encapsulation format for IPv6 packets.
Last clearing of counters	Time when the reset counts interface command was last used to clear statistics on the subinterface. If the command was never used since the switch was started, this field displays Never.

4. # Display operating status information and related statistics of Layer 2 interface GigabitEthernet 3/0/1.

<Sysname> display interface gigabitethernet 3/0/1

GigabitEthernet3/0/1 current state: UP

IP Packet Frame Type: PKTFMT_ETHNT_2, Hardware Address: 00e0-fc00-9512

Description: GigabitEthernet5/0/5 Interface

Loopback is not set

Media type is twisted pair, Port hardware type is 1000_BASE_T

100Mbps-speed mode, full-duplex mode

Link speed type is autonegotiation, link duplex type is autonegotiation

Flow-control is not enabled

The Maximum Frame Length is 9216

Broadcast MAX-ratio: 100%

Unicast MAX-ratio: 100%

Multicast MAX-ratio: 100%

Allow jumbo frame to pass

PVID: 3000

Mdi type: auto

Link delay is 1(sec)

Port link-type: access

Tagged VLAN ID : none

Untagged VLAN ID : 3000

Port priority: 2

Last clearing of counters: Never

Peak value of input: 60 bytes/sec, at 2011-04-02 08:47:37

Peak value of output: 220 bytes/sec, at 2011-04-02 09:34:06

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

Last 300 seconds output: 0 packets/sec 60 bytes/sec 0%

Input (total): 85 packets, 16384 bytes

0 unicasts, 78 broadcasts, 7 multicasts, - pauses

Input (normal): 85 packets, 16384 bytes

0 unicasts, 78 broadcasts, 7 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): 23364 packets, 2953373 bytes

11 unicasts, 2705 broadcasts, 20648 multicasts, - pauses

Output (normal): 23364 packets, 2953373 bytes

11 unicasts, 2705 broadcasts, 20648 multicasts, 0 pauses

Output: 0 output errors, - underruns, - buffer failures

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

- lost carrier, - no carrier

Table 5 display interface command (in bridge mode) output description

Field	Description
GigabitEthernet3/0/1 current state	Physical state of the Ethernet interface. For more information, see Table 6.
IP Packet Frame Type	Ethernet framing format on the interface.
100Mbps-speed mode	The interface operates at 100 Mbps. This field displays Unknown-speed mode when the interface is disconnected from the peer that it will automatically negotiate a port speed with.
full-duplex mode	The interface operates in full duplex mode. This field displays link duplex type is force link when the duplex mode of the interface is fixed and not configurable.
Link speed type is autonegotiation	The interface will negotiate a speed with its peer.
link duplex type is autonegotiation	The interface will negotiate a duplex mode with its peer.
Broadcast MAX-ratio	Broadcast suppression threshold as a percentage of the interface transmission capability. When the threshold is exceeded, the interface drops broadcast packets.
Unicast MAX-ratio	Unknown unicast suppression threshold as a percentage of the interface transmission capability. When the threshold is exceeded, the interface drops unknown unicast packets.
Multicast MAX-ratio	Multicast suppression threshold as a percentage of the interface transmission capability. When the threshold is exceeded, the interface drops multicast packets.
Allow jumbo frame to pass	The maximum length of Ethernet frames that are allowed to pass through the interface.
PVID	Port VLAN ID.
Mdi type	Cable type.
Link delay	Physical state change suppression interval on an Ethernet interface.
Port link-type	Link type of the interface, which could be access, trunk, and hybrid.
Tagged VLAN ID	VLANs for which the interface sends packets without removing VLAN tags.
Untagged VLAN ID	VLANs for which the interface sends packets after removing VLAN tags.
Last clearing of counters: Never	Time when the reset counts interface command was last used to clear statistics on the interface. Never indicates that the reset counts interface command was never used since the switch was started.
Peak value of input	Peak value of inbound traffic, in Bps.
Peak value of output	Peak value of outbound traffic, in Bps.
Last 300 seconds input: 0 packets/sec 0 bytes/sec Last 300 seconds output: 0 packets/sec 0 bytes/sec	Average rate of input and output traffic over the last 300 seconds, in pps and Bps.
Input (total): 85 packets, 16384 bytes 0 unicasts, 78 broadcasts, 7 multicasts, - pauses	Inbound traffic statistics (in packets and bytes) for the interface. All inbound normal and abnormal packets (including unicast, broadcast, and multicast), and pause frames were counted.
Input (normal): 85 packets, 16384 bytes 0 unicasts, 78 broadcasts, 7 multicasts, 0 pauses	Inbound normal traffic (including unicast, broadcast, and multicast) and pause frame statistics (in packets and bytes) for the interface.
input errors	Inbound packets with errors.
runts	Inbound frames shorter than 64 bytes, in correct format, and containing valid CRCs.
giants	Inbound frames larger than the maximum frame length supported on the interface. · For an Ethernet interface that does not permit jumbo frames, giants refer to frames larger than 1536 bytes (without VLAN tags) or 1540 bytes (with VLAN tags). · For an Ethernet interface that permits jumbo frames, giants refer to frames larger than the maximum length of Ethernet frames that are allowed to pass through, which is configured when you configure jumbo frame support on the interface.
throttles	The number of times that the port shut down due to buffer or CPU overload.
CRC	Total number of inbound frames that had a normal length, but contained checksum errors.
frame	Total number of inbound frames that contained checksum errors and a non-integer number of bytes.
overruns	Number of packet drops 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 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, jabber frames refer to CRC error frames greater than 1518 bytes (without VLAN tags) or 1522 bytes (with VLAN tags). For an Ethernet interface that permits jumbo frames, jabber frames refer to CRC error frames greater than the maximum length of Ethernet frames that are allowed to pass through the interface (which is configured when you configure jumbo frame support on the interface). · Symbol error frames—Frames that contained at least one undefined symbol. · Unknown operation code frames—Non-pause MAC control frames · Length error frames—Frames whose 802.3 length fields did not accord with the actual frame length (46 to 1500 bytes).
ignored	Number of inbound frames dropped because the receive buffer of the port ran low.
parity errors	Total number of frames with parity errors.
Output (total): 23364 packets, 2953373 bytes 11 unicasts, 2705 broadcasts, 20648 multicasts, - pauses	Outbound traffic statistics (in packets and bytes) for the port. All outbound normal and abnormal packets (including unicast, broadcast, and multicast), and pause frames were counted.
Output (normal): 23364 packets, 2953373 bytes 11 unicasts, 2705 broadcasts, 20648 multicasts, 0 pauses	Outbound normal traffic (including unicast, broadcast, and multicast) and pause frame statistics (in packets and bytes) for the interface.
output errors	Outbound packets with errors.
underruns	Number of packet drops 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 interface ran low on output buffers.
aborts	Number of packets that failed to be transmitted due to causes such as Ethernet collisions.
deferred	Number of frames that the interface deferred to transmit because of detected collisions.
collisions	Number of frames that the interface stopped transmitting because Ethernet collisions were detected during transmission.
late collisions	Number of frames that the interface deferred to transmit after transmitting their first 512 bits, because of detected collisions.
lost carrier	Number of carrier losses during transmission. This counter applies to serial WAN interfaces.
no carrier	Number of times that the port failed to detect the carrier when attempting to send frames. This counter applies to serial WAN interfaces.

NOTE:

If an output field is not available, a hyphen (-) is displayed.

Table 6 Description on the possible physical states of a Layer 2 Ethernet interface

Field	Description
UP	The interface is physically up.
DOWN	The interface is physically down because no physical connection exists (possibly reason: the network cable is disconnected or faulty).
DOWN ( Administratively )	The interface is physically down because it was shut down with the shutdown command. To restore its physical state, use the undo shutdown command.
DOWN ( Link-Aggregation interface down )	The interface is physically down because the aggregate interface corresponding to the aggregation group to which it belongs was shut down with the shutdown command.
DOWN ( OAM connection failure )	The interface is physically down because an OAM connection fails to be established on it or the OAM connection is disconnected.
DOWN ( DLDP connection failure )	The interface is physically down because a DLDP connection fails to be established on it or the DLDP connection is disconnected.
DOWN ( Loopback detection-protected )	The interface is shut down because a loop is detected on it.
DOWN ( BPDU-protected )	The interface is shut down by the BPDU guard function.
DOWN ( Monitor-Link uplink down )	The interface is physically down because the uplink of the monitor link group to which it belongs is down.

5. # Display brief information about all interfaces.

<Sysname> display interface brief

The brief information of interface(s) under route mode:

Link: ADM - administratively down; Stby - standby

Protocol: (s) - spoofing

Interface Link Protocol Main IP Description

GE5/0/2 UP UP 192.168.10.2

M-E0/0/0 DOWN DOWN 192.168.1.250

NULL0 UP UP(s) --

Pos2/1/1 DOWN DOWN --

Pos2/1/2 DOWN DOWN --

Pos2/1/3 DOWN DOWN --

Pos2/1/4 DOWN DOWN --

RPRPOS2/2/1 DOWN DOWN --

RPRPOS2/2/2 DOWN DOWN --

Tun2 DOWN DOWN --

Vlan1 ADM DOWN --

Vlan3000 UP UP 192.168.3.2

The brief information of interface(s) under bridge mode:

Link: ADM - administratively down; Stby - standby

Speed or Duplex: (a)/A - auto; H - half; F - full

Type: A - access; T - trunk; H - hybrid

Interface Link Speed Duplex Type PVID Description

GE5/0/1 DOWN auto A A 1

GE5/0/3 UP 100M(a) F(a) A 3000

GE5/0/4 ADM auto A A 1

GE5/0/5 UP 100M(a) F(a) A 3000

GE5/0/6 ADM auto A A 1

GE5/0/7 UP 100M(a) F(a) A 3000

GE5/0/8 UP 1G(a) F(a) A 3000

GE5/0/9 UP 1G(a) F(a) A 3000

6. # Filter the brief interface information to display the line starting with the (s) string and all subsequent lines.

<Sysname> display interface brief | begin (s)

The brief information of interface(s) under route mode:

Link: ADM - administratively down; Stby - standby

Protocol: (s) - spoofing

Interface Link Protocol Main IP Description

NULL0 UP UP(s) --

Pos2/1/1 DOWN DOWN --

Pos2/1/2 DOWN DOWN --

Pos2/1/3 DOWN DOWN --

Pos2/1/4 DOWN DOWN --

RPRPOS2/2/1 DOWN DOWN --

RPRPOS2/2/2 DOWN DOWN --

Tun2 DOWN DOWN --

Vlan1 ADM DOWN --

Vlan3000 UP UP 192.168.3.2

When you use the begin keyword to filter the output, the system only searches the Layer 3 interface list or the Layer 2 interface list. If regular-expression is on the Layer 3 interface list, the system only displays the line that contains regular-expression, and all subsequent lines on the Layer 3 interface list.

7. # Display brief information about all UP interfaces.

<Sysname> display interface brief | include UP

The brief information of interface(s) under route mode:

Link: ADM - administratively down; Stby - standby

Protocol: (s) - spoofing

Interface Link Protocol Main IP Description

GE5/0/2 UP UP 192.168.10.2

NULL0 UP UP(s) --

Vlan3000 UP UP 192.168.3.2

The brief information of interface(s) under bridge mode:

Link: ADM - administratively down; Stby - standby

Speed or Duplex: (a)/A - auto; H - half; F - full

Type: A - access; T - trunk; H - hybrid

Interface Link Speed Duplex Type PVID Description

GE5/0/3 UP 100M(a) F(a) A 3000

GE5/0/5 UP 100M(a) F(a) A 3000

GE5/0/7 UP 100M(a) F(a) A 3000

GE5/0/8 UP 1G(a) F(a) A 3000

GE5/0/9 UP 1G(a) F(a) A 3000

8. # Display the brief information about all but GigabitEthernet interfaces.

<Sysname> display interface brief | exclude GE

The brief information of interface(s) under route mode:

Link: ADM - administratively down; Stby - standby

Protocol: (s) - spoofing

Interface Link Protocol Main IP Description

M-E0/0/0 DOWN DOWN 192.168.1.250

NULL0 UP UP(s) --

Pos2/1/1 DOWN DOWN --

Pos2/1/2 DOWN DOWN --

Pos2/1/3 DOWN DOWN --

Pos2/1/4 DOWN DOWN --

RPRPOS2/2/1 DOWN DOWN --

RPRPOS2/2/2 DOWN DOWN --

Tun2 DOWN DOWN --

Vlan1 ADM DOWN --

Vlan3000 UP UP 192.168.3.2

9. # Display information about interfaces in down state and the relevant causes.

<Sysname> display interface brief down

The brief information of interface(s) under bridge mode:

Link: ADM - administratively down; Stby - standby

Interface Link Cause

M-E0/0/0 DOWN Not connected

Pos2/1/1 DOWN Not connected

Pos2/1/2 DOWN Not connected

Pos2/1/3 DOWN Not connected

Pos2/1/4 DOWN Not connected

RPRPOS2/2/1 DOWN Not connected

RPRPOS2/2/2 DOWN Not connected

Tun2 DOWN Not connected

Vlan1 ADM Administratively

The brief information of interface(s) under bridge mode:

Link: ADM - administratively down; Stby - standby

Interface Link Cause

GE5/0/1 DOWN Not connected

GE5/0/4 ADM Administratively

GE5/0/6 ADM Administratively

Table 7 display interface brief command output description

Field	Description
The brief information of interface(s) under route mode:	The command displays brief information about Layer 3 interfaces.
Link: ADM - administratively down; Stby - standby	· ADM—The interface has been shut down by the network administrator. To recover its physical layer state, perform the undo shutdown command. · Stby—The interface is a standby interface. You can use the display standby state command to check the corresponding primary interface.
Protocol: (s) - spoofing	If the network layer protocol state of an interface is shown as UP, but its link is an on-demand link or not present at all, its protocol attribute includes the spoofing flag (an s in parentheses). This attribute is typical of interface Null 0 and the loopback interfaces.
Interface	Abbreviated interface name.
Link	Physical link state of the interface: · UP—The link is up. · DOWN—The link is physically down. · ADM—The link has been administratively shut down. To recover its physical state, perform the undo shutdown command. · Stby—The interface is a standby interface.
Protocol	Protocol connection state of the interface, which can be UP, DOWN, or UP(s).
Description	The interface description. Information displayed in this field is restricted by the space. To view the complete interface description, use the display interface command without specifying the brief keyword.
The brief information of interface(s) under bridge mode:	Brief information about Layer 2 interfaces.
Speed or Duplex: (a)/A - auto; H - half; F - full	If the speed of an interface is automatically negotiated, its speed attribute includes the auto negotiation flag, letter a in parentheses. If the duplex mode of an interface is automatically negotiated, its duplex mode attribute includes the following options: · (a)/A—Auto negotiation · H—Half negotiation · F—Full negotiation
Type: A - access; T - trunk; H - hybrid	Link type options for Ethernet interfaces.
Speed	Interface rate, in bps.
Duplex	Duplex mode of the interface: · A—Auto-negotiation · F—Full duplex · F(a)—Auto-negotiated full duplex · H—Half duplex · H(a)—Auto-negotiated half duplex
Type	Link type of the interface: · A—Access · H—Hybrid · T—Trunk
PVID	Port VLAN ID.
Cause	Causes for the physical state of an interface to be DOWN. For more information, see Table 8.

Table 8 Causes for the physical state of an interface to be DOWN

Field	Description
Not connected	No physical connection exists (possibly because the network cable is disconnected or faulty).
Administratively	The port was shut down with the shutdown command. To restore the physical state of the interface, use the undo shutdown command.
Link-Aggregation interface down	The aggregate interface corresponding to the aggregation group to which the interface belongs was shut down with the shutdown command.
OAM connection failure	OAM connection fails (possibly because the connection fails to be established or the connection is disconnected).
DLDP connection failure	DLDP connection fails (possibly because the connection fails to be established or the connection is disconnected).
Loopback detection-protected	The interface is shut down because a loop is detected on it.
BPDU-protected	The interface is shut down by the BPDU guard function.
Monitor-Link uplink down	The uplink of the monitor link group to which the interface belongs is down.

duplex

Syntax

duplex { auto | full | half }

undo duplex

View

Ethernet interface view

Default level

2: System level

Parameters

auto: Sets the interface to operate in auto-negotiation mode.

full: Sets the interface to operate in full duplex mode.

half: Sets the interface to operate in half-duplex mode. This keyword is not available for the fiber combo ports.

Description

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

Use the undo duplex command to restore the default duplex mode of the Ethernet interface.

By default, Ethernet interfaces operate in auto-negotiation mode.

10-GE interfaces do not support this command.

Examples

# Configure the interface GigabitEthernet 3/0/1 to operate in full-duplex mode.

<Sysname> system-view

[Sysname] interface gigabitethernet 3/0/1

[Sysname-GigabitEthernet3/0/1] duplex full

flag sdh

Syntax

flag { j0 | j1 } sdh value

undo flag { j0 | j1 } sdh

View

Ten-GigabitEthernet interface view

Default level

2: System level

Parameters

j0: Sets the regenerator section trace byte.

j1: Sets the path trace byte.

value: Specifies the value for the J0 or J1 byte, a string of 1 to 15 characters.

Description

Use the flag sdh command to set a value for the overhead byte J0 or J1 in Synchronous Digital Hierarchy (SDH) frames when the 10-GE interface works in WAN mode.

Use the undo flag sdh command to restore the default value of the J0 or J1 byte.

By default, the value of J0 and J1 bytes is all 0s.

Related commands: port-mode.

NOTE:

This command is available only on 10-GE interfaces operating in WAN mode.

Examples

# Set J0 bytes in SDH frames to Sysname for interface Ten-GigabitEthernet 3/0/1.

<Sysname> system-view

[Sysname] interface ten-gigabitethernet 3/0/1

[Sysname-Ten-GigabitEthernet3/0/1] port-mode wan

[Sysname-Ten-GigabitEthernet3/0/1] flag j0 sdh Sysname

flow-control

Syntax

flow-control

undo flow-control

View

Ethernet interface view

Default level

2: System level

Parameters

None

Description

Use the flow-control command to enable TxRx mode generic flow control on an Ethernet interface.

Use the undo flow-control command to disable generic flow control on the Ethernet interface.

TxRx mode flow control enables an Ethernet interface to receive common pause frames from its peer, and send common pause frames to notify its peer of congestions.

By default, generic flow control on an Ethernet interface is disabled.

With the flow-control command 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, you must enable the generic flow control function at both ends of the link.

Examples

# Enable TxRx mode generic flow control on the interface GigabitEthernet 3/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 3/0/1

[Sysname-GigabitEthernet3/0/1] flow-control

flow-interval

Syntax

flow-interval interval

undo flow-interval

View

Ethernet interface view

Default level

2: System level

Parameters

interval: Sets the statistics polling interval, in seconds. It ranges from 5 to 300 and must be a multiple of 5.

Description

Use the flow-interval command to set the interface statistics polling interval.

Use the undo flow-interval command to restore the default interval.

By default, the interface statistics polling interval is 300 seconds.

Examples

# Set the statistics polling interval to 100 seconds on GigabitEthernet 3/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 3/0/1

[Sysname-GigabitEthernet3/0/1] flow-interval 100

interface

Syntax

interface interface-type { interface-number | interface-number.subnumber }

View

System view

Default level

2: System level

Parameters

interface-type: Specifies an interface type.

interface-number: Specifies an interface number.

Description

Use the interface command to enter interface or subinterface view. With the interface-number.subnumber argument specified, if the subinterface identified by the argument does not exist, this command creates the subinterface first, and then enters subinterface view.

Examples

# Enter GigabitEthernet 3/0/1 interface view (assuming that the interface is a Layer 2 Ethernet interface).

<Sysname> system-view

[Sysname] interface gigabitethernet 3/0/1

[Sysname-GigabitEthernet3/0/1]

# Create Ethernet subinterface GigabitEthernet 3/0/1.1 and enter GigabitEthernet 3/0/1.1 subinterface view (assuming that GigabitEthernet 3/0/1 is a Layer 2 Ethernet interface and the subinterface does not exist).

<Sysname> system-view

[Sysname] interface gigabitethernet 3/0/1.1

[Sysname-GigabitEthernet3/0/1.1] port link-mode route

[Sysname-GigabitEthernet3/0/1] quit

[Sysname] interface gigabitethernet 3/0/1.1

[Sysname-GigabitEthernet3/0/1.1]

link-delay

Syntax

link-delay delay-time

undo link-delay

View

Ethernet interface view

Default level

2: System level

Parameters

delay-time: Sets the physical state change suppression interval on the Ethernet interface, ranging from 0 to 10 seconds.

Description

Use the link-delay command to set the physical state change suppression interval on an Ethernet interface.

Use the undo link-delay command to restore the default.

By default, the physical state change suppression interval on an Ethernet interface is 1 second.

Do not use this command on Ethernet interfaces with RRPP, MSTP, or Smart Link enabled.

Examples

# Set the physical state change suppression interval on GigabitEthernet 3/0/1 to 8 seconds.

<Sysname> system-view

[Sysname] interface gigabitethernet 3/0/1

[Sysname-GigabitEthernet3/0/1] link-delay 8

link-delay enable trap updown

Syntax

link-delay enable trap updown

undo link-delay enable trap updown

View

Ethernet interface view

Default level

2: System level

parameters

None

Description

Use link-delay enable trap updown command to enable the damping function on an interface.

Use undo link-delay enable trap updown command to cancel the configuration.

By default, the damping function is disabled on interfaces.

When both the link-delay and link-delay enable trap updown commands are configured on an interface, the interface does not report link layer state changes to upper layer modules, but generates traps and logs, informing the user to take corresponding actions.

Related commands: link-delay.

Examples

# Enable the damping function on port GigabitEthernet 3/0/1.

<Sysname> system-view

[Sysname] interface-range GigabitEthernet 3/0/1

[Sysname-GigabitEthernet 3/0/1] link-delay enable trap updown

loopback

Syntax

loopback { external | internal }

undo loopback

View

Ethernet interface view

Default level

2: System level

Parameters

external: Enables external loopback testing to test all on-chip functions related to Ethernet interfaces. This keyword is available on only the Ethernet interface cards supporting 10-G XFP transceiver modules.

internal: Enables internal loopback testing to test the hardware of Ethernet interfaces.

Description

Use the loopback command to enable loopback testing on an Ethernet interface.

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

By default, loopback testing is disabled on Ethernet interfaces.

NOTE:

· Enable loopback testing for troubleshooting purposes, such as identifying an Ethernet problem.

· You cannot perform internal or external loopback testing on an administratively down (ADM DOWN) port. On a physically down (DOWN) port, you can perform only internal loopback testing.

· During loopback testing, the speed, duplex, mdi, and shutdown commands are not available. In addition, the port is operating in full duplex mode, regardless of its duplex configuration. After loopback testing is disabled, the duplex configuration of the port is restored.

Examples

# Enable internal loopback testing on GigabitEthernet 3/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 3/0/1

[Sysname-GigabitEthernet3/0/1] undo shutdown

[Sysname-GigabitEthernet3/0/1] loopback internal

port-mode

Syntax

port-mode { lan | wan }

undo port-mode

View

Ten-GigabitEthernet interface view

Default level

2: System level

Parameters

lan: Configures the interface to operate in LAN mode. A port operating in this mode transmits Ethernet packets and connects an Ethernet network.

wan: Configures the interface to operate in WAN mode. A port operating in this mode transmits SDH packets and connects an SDH network. In addition, it supports point-to-point packet transmission only.

Description

Use the port-mode command to configure a 10-GE interface to work in LAN or WAN mode.

Use the undo port-mode command to restore the default.

By default, a 10-GE interface operates in LAN mode.

Examples

# Configure the interface Ten-GigabitEthernet 3/0/1 to operate in the WAN mode.

<Sysname> system-view

[Sysname] interface ten-gigabitethernet 3/0/1

[Sysname-Ten-GigabitEthernet3/0/1] port-mode wan

port link-mode

Syntax

port link-mode { bridge | route }

undo port link-mode

View

Ethernet interface view

Default level

2: System level

Parameters

bridge: Specifies the Layer 2 mode.

route: Specifies the Layer 3 mode.

Description

Use the port link-mode command to change the link mode of an Ethernet interface.

Use the undo port link-mode command to restore the default.

Depending on the layer at which the switch processes received data packets, Ethernet interfaces on the switch may operate either as Layer 2 Ethernet interfaces (in bridge mode), or as Layer 3 Ethernet interfaces (in route mode).

By default, Ethernet interfaces operate in Layer 2 (bridge) mode.

NOTE:

· The switch supports this command when the working mode is not the standard mode. The switch works in standard mode by default. For more information about system working modes, see Fundamentals Configuration Guide.

· After you change the link mode of an Ethernet interface, all the settings of the Ethernet interface are restored to their defaults under the new link mode.

· Ethernet interfaces that do not support link mode switching include: Layer 3 Ethernet interfaces, link aggregation group member ports, reflector ports of a remote source mirroring group, Ethernet interface in IRF mode and with enhanced IRF enabled, and the internal ports of the LSR1IPS1A1/LSR1ACG1A1 cards. For more information about reflector ports, see Network Management and Monitoring Configuration Guide. For more information about the enhanced IRF mode, see IRF configuration guide.

Examples

# Configure GigabitEthernet 3/0/1 to operate in Layer 2 mode.

<Sysname> system-view

[Sysname] interface gigabitethernet 3/0/1

[Sysname-GigabitEthernet3/0/1] display this

interface GigabitEthernet3/0/1

port link-mode route

Return

The output shows that GigabitEthernet 3/0/1 operates in route mode.

[Sysname-GigabitEthernet3/0/1] port link-mode bridge

[Sysname-GigabitEthernet3/0/1] display this

interface GigabitEthernet3/0/1

port link-mode bridge

Return

The output shows that GigabitEthernet 3/0/1 is now operating in bridge mode.

NOTE:

The display this command displays the configuration that takes effect in the current view.

port link-mode interface-list

Syntax

port link-mode { bridge | route } interface-list

View

System view

Default level

2: System level

Parameters

bridge: Specifies the Layer 2 mode.

route: Specifies the Layer 3 mode.

interface-list: Specifies an Ethernet interface list, in the format of interface-type interface-number [ to interface-type interface-number ] &<1-10>, where &<1-10> indicates that you can specify up to 10 interfaces or interface ranges.

Description

Use the port link-mode interface-list command to change the link mode of Ethernet interfaces.

By default, Ethernet interfaces operate in Layer 2 mode (bridge mode).

Configuring the port link-mode interface-list command in system view and configuring the port link-mode command in Ethernet interface view lead to the same result. The difference between the two commands is that the former changes the link mode of multiple Ethernet interfaces in batch, and the latter changes the link mode of one Ethernet interface at a time.

NOTE:

· After you change the link mode of an Ethernet interface, all the settings of the Ethernet interface are restored to their defaults under the new link mode.

· The link mode configuration for an Ethernet interface in system view and that in interface view supersede each other, and the one configured last takes effect.

Examples

# Configure GigabitEthernet 3/0/1 through GigabitEthernet 3/0/4 to operate in Layer 2 mode.

<Sysname> system-view

[Sysname] port link-mode bridge Gigabitethernet 3/0/1 to Gigabitethernet 3/0/4

# Configure GigabitEthernet 3/0/1 through GigabitEthernet 3/0/4 to operate in Layer 3 mode.

<Sysname> system-view

[Sysname] port link-mode route GigabitEthernet 3/0/1 to GigabitEthernet 3/0/5

reset counters interface

Syntax

reset counters interface [ interface-type [ interface-number ] ]

View

User view

Default level

2: System level

Parameters

interface-type: Specifies an interface type.

interface-number: Specifies an interface number.

Description

Use the reset counters interface command to clear the Ethernet interface statistics.

Before collecting traffic statistics for a specific period of time on an interface, clear the old statistics first.

· If no interface type is specified, this command clears statistics for all interfaces.

· If only the interface type is specified, this command clears statistics for all interfaces of that type.

· If both the interface type and number are specified, this command clears statistics for the specified interface.

Examples

# Clear the statistics of GigabitEthernet 3/0/1.

<Sysname> reset counters interface gigabitethernet 3/0/1

shutdown

Syntax

shutdown

undo shutdown

View

Ethernet interface view, Ethernet subinterface view, port group view

Default level

2: System level

Parameters

None

Description

Use the shutdown command to shut down an Ethernet interface or subinterface.

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

By default, Ethernet interfaces and subinterfaces are in down state.

To shut down or bring up all Ethernet interfaces in a port group, execute this command in port group view.

You may need to shut down and then bring up an Ethernet interface to activate configuration changes such as the speed or duplex mode changes.

Examples

# Shut down and then bring up interface GigabitEthernet 3/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 3/0/1

[Sysname-GigabitEthernet3/0/1] shutdown

[Sysname-GigabitEthernet3/0/1] undo shutdown

# Shut down and then bring up Ethernet subinterface GigabitEthernet 3/0/1.1.

<Sysname> system-view

[Sysname] interface gigabitethernet3/0/1.1

[Sysname-GigabitEthernet3/0/1.1] shutdown

[Sysname-GigabitEthernet3/0/1.1] undo shutdown

# Shut down all member ports in the port group named group1.

<Sysname> system-view

[Sysname] port-group manual group1

[Sysname-port-group-manual-group1] shutdown

speed

Syntax

speed { 10 | 100 | 1000 | auto }

undo speed

View

Ethernet interface view

Default level

2: System level

Parameters

10: Sets the interface speed to 10 Mbps.

100: Sets the interface speed to 100 Mbps.

1000: Sets the interface speed to 1000 Mbps.

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

Description

Use the speed command to set the speed of an Ethernet interface.

Use the undo speed command to restore the default.

By default, the speed on an Ethernet interface is determined through auto-negotiation.

For a copper Ethernet port, use the speed command to set its speed to match the speed of the peer interface.

For a fiber port, use the speed command to set its speed to match the rate of a pluggable optical transceiver.

NOTE:

· You cannot configure the rate of a 10-GE interface.

· A 1000-Mbps Ethernet interface can only operate at 1000 Mbps or in auto-negotiation mode.

Examples

# Configure GigabitEthernet 3/0/1 to operate at 100 Mbps.

<Sysname> system-view

[Sysname] interface gigabitethernet 3/0/1

[Sysname-GigabitEthernet3/0/1] speed 100

threshold

Syntax

threshold { sd | sf } value

undo threshold { sd | sf }

Views

Ten-GigabitEthernet interface view

Default level

2: System level

Parameters

sd: Specifies the Signal Degrade (SD) alarm threshold.

sf: Specifies the Signal Fail (SF) alarm threshold.

value: Specifies the alarm threshold in the form of 10e-X. X is an integer between 3 and 9. The X value of the SD should be larger than the X value of the SF.

Description

Use the threshold command to configure the SD or SF threshold when the 10-GE interface is operating in WAN mode.

Use the undo threshold command to restore the default.

By default, the SD threshold value is 10e-6 (X is 6); the SF threshold value is 10e-4 (X is 4).

SD and SF alarms are used to indicate current line performance. They are generated when the receiving end detects a certain amount of bit errors. The bit error rate threshold of SF is higher than that of SD. When a small amount of errors occur, SD alarms are generated; when the error rate increases to a certain level, SF alarms are generated, indicating line performance has been degrading seriously. The SD alarm threshold should be smaller than the SF alarm threshold.

Related commands: alarm-detect and port-mode.

NOTE:

This command is available only on a 10-GE interface operating in WAN mode.

Examples

# Set the SD alarm threshold to 10e-5 (0.0001) for interface Ten-GigabitEthernet 4/1/1.

<Sysname> system-view

[Sysname] interface Ten-GigabitEthernet4/1/1

[Sysname-Ten-GigabitEthernet4/1/1] port-mode wan

[Sysname-Ten-GigabitEthernet4/1/1] threshold sd 5

Layer 2 Ethernet interface configuration commands

broadcast-suppression

Syntax

broadcast-suppression { kbps max-kbps | pps max-pps }

undo broadcast-suppression

View

Layer 2 Ethernet interface view, port group view

Default level

2: System level

Parameters

kbps max-kbps: Specifies the maximum number of kilobits of broadcast traffic that the Ethernet interface can forward per second. For a GE port, the value ranges from 1 to 1,000,000 kbps. For a 10-GE port, the value ranges from 1 to 10,000,000 kbps.

pps max-pps: Specifies the maximum number of broadcast packets that the Ethernet interface can forward per second. For a GE port, the value ranges from 1 to 1,488,100 pps. For a 10-GE port, the value ranges from 1 to 14,881,000 pps.

Description

Use the broadcast-suppression command to set the broadcast suppression threshold on one or multiple Ethernet interfaces.

Use the undo broadcast-suppression command to restore the default.

By default, Ethernet interfaces do not suppress broadcast traffic.

· If you execute this command in Ethernet interface view, the configuration takes effect only on the interface.

· If you execute this command in port group view, the configuration takes effect on all ports in the port group.

When broadcast traffic exceeds the broadcast suppression threshold, the interface discards broadcast packets until the broadcast traffic drops below the threshold.

Examples

# Set the broadcast suppression threshold to 2000 pps on GigabitEthernet 3/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 3/0/1

[Sysname-GigabitEthernet3/0/1] broadcast-suppression pps 2000

display port-group manual

Syntax

display port-group manual [ all | name port-group-name ] [ | { begin | exclude | include } regular-expression ]

View

Any view

Default level

2: System level

Parameters

all: Displays information about all port groups.

name port-group-name: Specifies the name of a port group, a string of 1 to 32 characters.

|: Filters command output by specifying a regular expression. For more information about regular expressions, see Fundamentals Configuration Guide.

begin: Displays the first line that matches the specified regular expression and all lines that follow.

include: Displays all lines that match the specified regular expression.

regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.

Description

Use the display port-group manual command to display information about port groups.

· If the all keyword is specified, this command displays the name and member Ethernet interfaces of each port group on the switch.

· If a port group is specified, this command displays its name and member Ethernet interfaces.

· If you do not specify the all keyword or any port group name, the command displays the name of each port group on the switch.

Examples

# Display detailed information about all port groups.

<Sysname> display port-group manual all

Member of group1:

GigabitEthernet3/0/1 GigabitEthernet3/0/2 GigabitEthernet3/0/3

GigabitEthernet3/0/4 GigabitEthernet3/0/5 GigabitEthernet3/0/6

group-member

Syntax

group-member interface-list

undo group-member interface-list

View

Port group view

Default level

2: System level

Parameters

interface-list: Specifies an Ethernet interface list, in the form of interface-type interface-number [ to interface-type interface-number ] &<1-10>, where &<1-10> indicates that you can specify up to 10 interfaces or interface ranges.

Description

Use the group-member command to assign Ethernet interfaces to a port group.

Use the undo group-member command to remove Ethernet interfaces from the port group.

By default, a port group does not contain any member ports.

If you use the group-member interface-type interface-start-number to interface-type interface-end-number command to add multiple ports in batch to the specified port group, make sure that all these ports are of the same type and on the same interface card, and the interface-end-number argument must be greater than the interface-start-number argument.

Examples

# Assign interface GigabitEthernet 3/0/1 to the manual port group named group1.

<Sysname> system-view

[Sysname] port-group manual group1

[Sysname-port-group-manual-group1] group-member gigabitethernet 3/0/1

jumboframe enable

Syntax

jumboframe enable [ value ]

undo jumboframe enable

View

Layer 2 Ethernet interface view, port group view

Default level

2: System level

Parameters

value: Sets the maximum length of Ethernet frames that are allowed to pass through, ranging from 1552 to 9216 bytes. This argument ranges from 1552 to 8168 for the interface on an LST1XP16LEB1 or LST1XP16LEC1 card.

Description

Use the jumboframe enable command to allow jumbo frames within the specified length to pass through one or multiple Ethernet interfaces.

Use the undo jumboframe enable command to prevent jumbo frames from passing through one or multiple Ethernet interfaces.

By default, the switch allows jumbo frames within 9216 bytes to pass through Ethernet interfaces.

· If you execute this command in Ethernet interface view, the configuration takes effect only on the interface.

· If you execute this command in port group view, the configuration takes effect on all ports in the port group.

Examples

# Specify the maximum length of Ethernet frames that are allowed to pass through GigabitEthernet 3/0/1 as 1556 bytes.

<Sysname> system-view

[Sysname] interface gigabitethernet 3/0/1

[Sysname-GigabitEthernet3/0/1] jumboframe enable 1556

mdi

Syntax

mdi { across | auto | normal }

undo mdi

View

Layer 2 Ethernet interface view

Default level

2: System level

Parameters

across: Sets the MDI mode to across. In this mode, pins 1 and 2 of the port are receive pins, and pins 3 and 6 are transmit pins.

auto: Sets the MDI mode to auto. In this mode, the port negotiates pin roles with its peer.

normal: Sets the MDI mode to normal. In normal mode, pins 1 and 2 of the port are transmit pins, and pins 3 and 6 are receive pins.

Description

Use the mdi command to configure the MDI mode of a copper Ethernet interface.

Use the undo mdi command to restore the default.

By default, Ethernet interfaces operate in auto MDI mode.

NOTE:

This command is not applicable to optical ports.

Examples

# Set GigabitEthernet 3/0/1 to operate in across MDI mode.

<Sysname> system-view

[Sysname] interface gigabitethernet 3/0/1

[Sysname-GigabitEthernet3/0/1] mdi across

multicast-suppression

Syntax

multicast-suppression { kbps max-kbps | pps max-pps }

undo multicast-suppression

View

Layer 2 Ethernet interface view, port group view

Default level

2: System level

Parameters

kbps max-kbps: Specifies the maximum number of kilobits of multicast traffic that the Ethernet interface can forward per second. For a GE port, the value ranges from 1 to 1,000,000 kbps. For a 10-GE port, the value ranges from 1 to 10,000,000 kbps.

pps max-pps: Specifies the maximum number of multicast packets that the Ethernet interface can forward per second. For a GE port, the value ranges from 1 to 1,488,100 pps. For a 10-GE port, the value ranges from 1 to 14,881,000 pps.

Description

Use the multicast-suppression command to set the multicast suppression threshold on an Ethernet interface or a group of Ethernet interfaces.

Use the undo multicast-suppression command to restore the default.

By default, Ethernet interfaces do not suppress multicast traffic.

· If you execute this command in Ethernet interface view, the configurations take effect only on the interface.

· If you execute this command in port group view, the configurations take effect on all ports in the port group.

When multicast traffic exceeds the threshold, the interface discards multicast packets until the multicast traffic drops below the threshold.

Examples

# Set the multicast suppression threshold to 2000 pps on GigabitEthernet 3/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 3/0/1

[Sysname-GigabitEthernet3/0/1] multicast-suppression pps 2000

port connection-mode

Syntax

port connection-mode { extend | normal }

undo port connection-mode

View

Layer 2 Ethernet interface view

Default level

2: System level

Parameters

extend: Sets the connection mode of the Ethernet interface to extended.

normal: Sets the connection mode of the Ethernet interface to normal.

Description

Use the port connection-mode command to set the connection mode of an interface.

Use the undo port connection-mode command to restore the default.

By default, the connection mode of an interface is normal.

To ensure normal communication when you configure an OAA application, set the interface connecting the switch and the OAA card, the internal interface, to operate in extended connection mode.

You can use this command only on the internal interface of the LSR1IPS1A1, LSR1NSM1A1, or LSR1ACG1A1 card.

Examples

# Set the connection mode of Ten-GigabitEthernet 3/0/1 to extended.

<Sysname> system-view

<Sysname> interface ten-gigabitethernet 3/0/1

[Sysname-Ten-GigabitEthernet3/0/1] port connection-mode extend

port-group manual

Syntax

port-group manual port-group-name

undo port-group manual port-group-name

View

System view

Default level

2: System level

Parameters

port-group-name: Sets the port group name, a string of 1 to 32 characters.

Description

Use the port-group manual command to create a port group and enter port group view.

Use the undo port-group manual command to remove a port group.

By default, no port group exists.

Examples

# Create port group group1.

<Sysname> system-view

[Sysname] port-group manual group1

[Sysname-port-group-manual-group1]

port up-mode

Syntax

port up-mode

undo port up-mode

View

Ethernet interface view

Default level

2: System level

Parameter

None

Description

Use the port up-mode command to forcibly bring up an Ethernet Interface.

Use the undo port up-mode command to restore the default.

By default, the interface is not forcibly brought up.

NOTE:

· Only the general GE fiber port and the 10-GE fiber port operating in LAN mode can be forcibly brought up. Copper ports and combo interfaces do not support this function.

· The port up-mode command cannot be used together with any of the shutdown, speed, duplex, or loopback commands.

· When a fiber-to-copper media converter, 100/1000-Mbps transceiver module, or 100-Mbps transceiver module is inserted into a fiber GE port forcibly brought up, traffic cannot be forwarded properly; when a copper transceiver module is inserted into the 10GE fiber port forcibly brought up, the traffic cannot be forwarded properly. To enable such an interface to forward traffic properly, use the undo port up-mode command on the interface.

Examples

# Forcibly bring up fiber port GigabitEthernet 3/0/1.

<Sysname> system-view

[Sysname] interface GigabitEthernet 3/0/1

[Sysname-GigabitEthernet3/0/1] port up-mode

speed auto

Syntax

speed auto { 10 | 100 | 1000 } *

undo speed

View

100-Mbps or Gigabit Layer 2 Ethernet interface view

Default level

2: System level

Parameters

10: Sets 10 Mbps as an option for speed auto negotiation.

100: Sets 100 Mbps as an option for speed auto negotiation.

1000: Sets 1000 Mbps as an option for speed auto negotiation.

Description

Use the speed auto command to set options for speed auto negotiation.

Use the undo speed command to restore the default.

By default, interface rate options for auto negotiation include 10 Mbps, 100 Mbps, and 1000 Mbps.

The speed command and the speed auto command supersede each other, and the one configured last takes effect.

For example, if you configure speed 100 after configuring speed auto 100 1000 on an interface, the interface speed is set to 100 Mbps by force without negotiation. If you configure speed auto 100 1000 after configuring speed 100 on the interface, the interface negotiates with its peer, and the negotiated speed is either 100 Mbps or 1000 Mbps.

NOTE:

· The speed auto command is available only for copper Ethernet interfaces.

· To avoid negotiation failure, make sure that at least one speed option is supported at both ends.

Examples

# Configure the port GigabitEthernet 3/0/1 to use 10 Mbps and 1000 Mbps for speed negotiation.

<Sysname> system-view

[Sysname] interface gigabitethernet 3/0/1

[Sysname-GigabitEthernet3/0/1] speed auto 10 1000

unicast-suppression

Syntax

unicast-suppression { kbps max-kbps | pps max-pps }

undo unicast-suppression

View

Layer 2 Ethernet interface view, port group view

Default level

2: System level

Parameters

kbps max-kbps: Specifies the maximum number of kilobits of unknown unicast traffic that the Ethernet interface can forward per second. For a GE port, the value ranges from 1 to 1,000,000 kbps. For a 10-GE port, the value ranges from 1 to 10,000,000 kbps.

pps max-pps: Specifies the maximum number of unknown unicast packets that the Ethernet interface can forward per second. For a GE port, the value ranges from 1 to 1,488,100 pps. For a 10-GE port, the value ranges from 1 to 14,881,000 pps.

Description

Use the unicast-suppression command to set the unknown unicast suppression threshold on an Ethernet interface or a group of Ethernet interfaces.

Use the undo unicast-suppression command to restore the default.

By default, Ethernet interfaces do not suppress unknown unicast traffic.

· If you execute this command in Ethernet interface, the configurations take effect only on the interface.

· If you execute this command in port group view, the configurations take effect on all ports in the port group.

When unknown unicast traffic exceeds the threshold you configure, the system discards unknown unicast packets until the unknown unicast traffic drops below the threshold.

Examples

# Set the unknown unicast suppression threshold to 2000 pps on GigabitEthernet 3/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 3/0/1

[Sysname-GigabitEthernet3/0/1] unicast-suppression pps 2000

Layer 3 Ethernet interface and subinterface configuration commands

mtu

Syntax

mtu size

undo mtu

View

Layer 3 Ethernet interface view, Layer 3 Ethernet subinterface view

Default level

2: System level

Parameters

size: Sets the maximum transmission unit (MTU) in bytes, which ranges from 64 to 9198.

NOTE:

Do not set the size argument to a value greater than 8146 on the interface of an LST1XP16LEB1 or LST1XP16LEC1 card.

Description

Use the mtu command to set the MTU for an Ethernet interface or subinterface.

Use the undo mtu command to restore the default.

By default, the MTU of an Ethernet interface or subinterface is 1500 bytes.

Examples

# Set the MTU to 1430 bytes for the Layer 3 Ethernet interface GigabitEthernet 3/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 3/0/1

[Sysname-GigabitEthernet3/0/1] port link-mode route

[Sysname-GigabitEthernet3/0/1] mtu 1430

# Set the MTU to 1680 bytes for the Layer 3 Ethernet subinterface GigabitEthernet 3/0/1.1.

<Sysname> system-view

[Sysname] interface gigabitethernet 3/0/1.1

[Sysname-GigabitEthernet3/0/1.1] mtu 1680

03-Interface Command Reference

display counters

flag sdh

flow-interval

link-delay

port-mode

shutdown

speed

broadcast-suppression

display port-group manual

mdi

multicast-suppression

port connection-mode

speed auto

Layer 3 Ethernet interface and subinterface configuration commands

mtu

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