H3C S5120-EI Series Command Reference Manual

H3C S5120-EI Series Ethernet Switches

Layer 2 - LAN Switching Command Reference

Hangzhou H3C Technologies Co., Ltd.

http://www.h3c.com

Software version: Release 2208

Document version: 6W100-20101224

No part of this manual may be reproduced or transmitted in any form or by any means

without prior written consent of Hangzhou H3C Technologies Co., Ltd.

Trademarks

H3C,

, Aolynk, , H

3

Care,

, TOP G, , IRF, NetPilot, Neocean,

NeoVTL, SecPro, SecPoint, SecEngine, SecPath, Comware, Secware, Storware, NQA, VVG,

V

2

G, V

n

G, PSPT, XGbus, N-Bus, TiGem, InnoVision and HUASAN are trademarks of Hangzhou

H3C Technologies Co., Ltd.

All other trademarks that may be mentioned in this manual are the property of their

respective owners

Notice

The information in this document is subject to change without notice. Every effort has been

made in the preparation of this document to ensure accuracy of the contents, but all

statements, information, and recommendations in this document do not constitute the

warranty of any kind, express or implied.

Preface

The H3C S5120-EI documentation set includes 10 command references, which describe the

commands and command syntax options for the S5120-EI Series Ethernet Switches,

Release2208.

The Layer 2 – LAN Switching Command Reference describes LAN switching configuration

commands. It covers commands for implementing flow control and load balancing,

isolating users in the same VLAN, eliminating Layer 2 loops, dividing VLANs, and modifying

VLAN tags of packets.

This preface includes:

•

Audience

•

Added and modified commands

•

Conventions

•

About the H3C S5120-EI documentation set

•

Obtaining documentation

•

Technical support

•

Documentation feedback

Audience

This documentation is intended for:

• Network planners

• Field technical support and servicing engineers

• Network administrators working with the S5120-EI series

Added and modified commands

Compared to Release2202, Release2208 adds, modifies, and deletes the following

commands:

Command reference Added and modified commands

Ethernet interface

configuration commands

Added commands:

• display counters

• display counters rate

• flow-control receive enable

• link-delay mode up

• port auto-power-down

• loopback-detection action

• loopback-detection multi-port-mode enable

• port bridge enable

Modified commands:

• display brief interface is changed into display interface brief

Command reference Added and modified commands

Loopback and null interface

configuration commands

Added commands: reset counters interface null

Modified commands: reset counters interface is changed into

reset counters interface loopback

MAC address table

configuration commands

None

MAC Information

configuration commands

None

Ethernet link aggregation

configuration commands

Added commands:

• display interface bridge-aggregation

• lacp period short

• link-aggregation lacp traffic-redirect-notification enable

• link-aggregation load-sharing mode local-first

Port isolation configuration

commands

None

MSTP configuration

commands

Added commands: display stp bpdu-statistics

BPDU tunneling configuration

commands

• None

VLAN configuration

commands

Added commands:

• mac-vlan trigger enable

• port pvid disable

Isolate-user-VLAN

configuration commands

Added commands:

• isolated-vlan enable

• port isolate-user-vlan

Voice VLAN configuration

commands

Added commands:

• voice vlan qos

• voice vlan qos trust

GVRP configuration

commands

None

QinQ configuration

commands

Added commands: qinq transparent-vlan

LLDP configuration

commands

None

Conventions

This section describes the conventions used in this documentation set.

Command conventions

Convention Description

Boldface Bold text represents commands and keywords that you enter literally as shown.

Italic Italic text represents arguments that you replace with actual values.

[ ]

Square brackets enclose syntax choices (keywords or arguments) that are

optional.

{ x | y | ... }

Braces enclose a set of required syntax choices separated by vertical bars,

from which you select one.

[ x | y | ... ]

Square brackets enclose a set of optional syntax choices separated by vertical

bars, from which you select one or none.

{ x | y | ... } *

Asterisk marked braces enclose a set of required syntax choices separated by

vertical bars, from which you select at least one.

[ x | y | ... ] *

Asterisk marked square brackets enclose optional syntax choices separated

by vertical bars, from which you may select multiple choices or none.

&<1-n>

The argument or keyword and argument combination before the ampersand

(&) sign can be entered 1 to n times.

# A line that starts with a pound (#) sign is comments.

GUI conventions

Convention Description

Boldface

Window names, button names, field names, and menu items are in Boldface.

For example, the New User window appears; click OK.

>

Multi-level menus are separated by angle brackets. For example, File > Create

> Folder.

Symbols

Convention Description

WARNING

An alert that calls attention to important information that if not understood or

followed can result in personal injury.

CAUTION

An alert that calls attention to important information that if not understood or

followed can result in data loss, data corruption, or damage to hardware or

software.

IMPORTANT

An alert that calls attention to essential information.

NOTE

An alert that contains additional or supplementary information.

TIP

An alert that provides helpful information.

About the H3C S5120-EI documentation set

The H3C S5120-EI documentation set includes:

Category Documents Purposes

Marketing brochures Describe product specifications and benefits.

Technology white papers

Provide an in-depth description of software

features and technologies.

RPS User Manual

Describes the appearances, features, and

specifications of the RPS units available for the

products.

RPS Ordering Information for

H3C Low-End Ethernet

Switches

Provides the RPS and switch compatibility matrix

and RPS cable specifications.

Product

description

and

specifications

H3C Low End Series Ethernet Describes the models, appearances, and

Category Documents Purposes

Switches Pluggable Modules

Manual

specifications of the pluggable modules

available for the products.

Interface Card User Manual

Describes the appearance and specifications

of interface cards.

Installation Manual

Provides a complete guide to hardware

installation and hardware specifications.

Provides regulatory information and the safety

instructions that must be followed during

installation.

Pluggable SFP[SFP+][XFP]

Transceiver Modules

Installation Guide

Guides you through installing SFP/SFP+/XFP

transceiver modules.

Hardware

installation

Interface Card User Manual Describes how to install an interface card.

Configuration guides

Describe software features and configuration

procedures.

Software

configuration

Command references

Provide a quick reference to all available

commands.

H3C Series Ethernet Switches

Login Password Recovery

Manual

Describes how to find or recover a lost

password.

Operations

and

maintenance

Release notes

Provide information about the product release,

including the version history, hardware and

software compatibility matrix, version upgrade

information, technical support information, and

software upgrading.

Obtaining documentation

You can access the most up-to-date H3C product documentation on the World Wide Web

at

http://www.h3c.com.

Click the links on the top navigation bar to obtain different categories of product

documentation:

[Technical Support & Documents > Technical Documents] – Provides hardware installation,

software upgrading, and software feature configuration and maintenance

documentation.

[Products & Solutions] – Provides information about products and technologies, as well as

solutions.

[Technical Support & Documents > Software Download] – Provides the documentation

released with the software version.

Technical support

[email protected]

http://www.h3c.com

Documentation feedback

You can e-mail your comments about product documentation to [email protected].

We appreciate your comments.

i

Contents

Ethernet interface configuration commands··············································································································· 1

General Ethernet interface configuration commands····································································································1

broadcast-suppression ·············································································································································1

description·································································································································································2

display counters························································································································································3

display counters rate················································································································································4

display interface ·······················································································································································5

display interface brief ··········································································································································· 10

display loopback-detection··································································································································· 14

display packet-drop interface······························································································································· 15

display packet-drop summary ······························································································································ 16

display port combo ··············································································································································· 16

display port-group manual ··································································································································· 17

display storm-constrain ········································································································································· 18

duplex····································································································································································· 20

flow-control····························································································································································· 20

flow-control receive enable ·································································································································· 21

flow-interval···························································································································································· 22

group-member························································································································································ 22

interface·································································································································································· 23

jumboframe enable ··············································································································································· 23

link-delay ································································································································································ 24

link-delay mode up················································································································································ 25

loopback ································································································································································ 26

loopback-detection action ···································································································································· 27

loopback-detection control enable ······················································································································ 28

loopback-detection enable ··································································································································· 28

loopback-detection interval-time··························································································································· 29

loopback-detection multi-port-mode enable ········································································································ 30

loopback-detection per-vlan enable ···················································································································· 31

mdi ·········································································································································································· 32

multicast-suppression············································································································································· 32

port auto-power-down··········································································································································· 33

port bridge enable ················································································································································ 34

port-group manual················································································································································· 35

reset counters interface ········································································································································· 35

reset packet-drop interface··································································································································· 36

shutdown ································································································································································ 37

speed ······································································································································································ 38

speed auto ····························································································································································· 38

storm-constrain ······················································································································································· 39

storm-constrain control ·········································································································································· 41

storm-constrain enable log ··································································································································· 41

storm-constrain enable trap ·································································································································· 42

storm-constrain interval ········································································································································· 42

unicast-suppression················································································································································ 43

virtual-cable-test ····················································································································································· 44

ii

Loopback and null interface configuration commands····························································································46

Loopback and null interface configuration commands ······························································································ 46

description······························································································································································ 46

display interface loopback··································································································································· 47

display interface null ············································································································································· 50

interface loopback ················································································································································ 51

interface null··························································································································································· 51

reset counters interface loopback ························································································································ 52

reset counters interface null ·································································································································· 52

shutdown ································································································································································ 53

MAC address table configuration commands ·········································································································54

MAC address table configuration commands ············································································································ 54

display mac-address ············································································································································· 54

display mac-address aging-time ·························································································································· 56

display mac-address mac-learning ······················································································································ 56

display mac-address statistics ······························································································································ 57

mac-address (interface view)································································································································ 58

mac-address (system view) ··································································································································· 59

mac-address mac-learning disable······················································································································ 60

mac-address max-mac-count (interface view) ····································································································· 61

mac-address timer ················································································································································· 62

MAC Information configuration commands·············································································································64

MAC Information configuration commands ················································································································ 64

mac-address information enable (Ethernet interface view) ··············································································· 64

mac-address information enable (system view)·································································································· 65

mac-address information interval························································································································· 65

mac-address information mode···························································································································· 66

mac-address information queue-length················································································································ 66

Ethernet link aggregation configuration commands································································································68

Ethernet link aggregation configuration commands··································································································· 68

description······························································································································································ 68

display interface bridge-aggregation·················································································································· 68

display lacp system-id ··········································································································································· 71

display link-aggregation load-sharing mode······································································································ 72

display link-aggregation member-port ················································································································ 74

display link-aggregation summary······················································································································· 76

display link-aggregation verbose ························································································································ 77

enable snmp trap updown ··································································································································· 79

interface bridge-aggregation ······························································································································· 80

lacp port-priority ···················································································································································· 81

lacp period short ··················································································································································· 81

lacp system-priority················································································································································ 82

link-aggregation lacp traffic-redirect-notification enable··················································································· 82

link-aggregation load-sharing mode ··················································································································· 83

link-aggregation load-sharing mode local-first ··································································································· 85

link-aggregation mode·········································································································································· 85

port link-aggregation group ································································································································· 86

reset counters interface ········································································································································· 87

reset lacp statistics················································································································································· 87

shutdown ································································································································································ 88

Port isolation configuration commands ····················································································································89

Port isolation configuration commands························································································································ 89

iii

display port-isolate group····································································································································· 89

port-isolate enable················································································································································· 90

MSTP configuration commands·································································································································92

MSTP configuration commands ···································································································································· 92

active region-configuration··································································································································· 92

bpdu-drop any ······················································································································································· 92

check region-configuration··································································································································· 93

display stp ······························································································································································ 94

display stp abnormal-port····································································································································· 99

display stp bpdu-statistics ···································································································································100

display stp down-port··········································································································································103

display stp history················································································································································104

display stp region-configuration ························································································································105

display stp root ····················································································································································106

display stp tc························································································································································107

instance ································································································································································108

region-name ·························································································································································109

reset stp ································································································································································109

revision-level·························································································································································110

stp bpdu-protection··············································································································································111

stp bridge-diameter ·············································································································································111

stp compliance·····················································································································································112

stp config-digest-snooping ··································································································································113

stp cost··································································································································································113

stp edged-port······················································································································································114

stp enable·····························································································································································115

stp loop-protection···············································································································································116

stp max-hops ························································································································································117

stp mcheck····························································································································································118

stp mode·······························································································································································119

stp no-agreement-check ······································································································································119

stp pathcost-standard ··········································································································································120

stp point-to-point ··················································································································································121

stp port priority ····················································································································································122

stp port-log ···························································································································································122

stp priority ····························································································································································123

stp region-configuration ······································································································································124

stp root primary ···················································································································································124

stp root secondary···············································································································································125

stp root-protection················································································································································126

stp tc-protection····················································································································································127

stp tc-protection threshold ···································································································································127

stp timer forward-delay·······································································································································128

stp timer hello·······················································································································································128

stp timer max-age ················································································································································129

stp timer-factor ·····················································································································································130

stp transmit-limit ···················································································································································131

vlan-mapping modulo ·········································································································································131

BPDU tunneling configuration commands ············································································································· 133

BPDU tunneling configuration commands ·················································································································133

bpdu-tunnel dot1q ···············································································································································133

bpdu-tunnel tunnel-dmac·····································································································································134

iv

VLAN configuration commands ····························································································································· 136

VLAN configuration commands··································································································································136

description····························································································································································136

display interface vlan-interface ··························································································································137

display vlan··························································································································································139

interface vlan-interface········································································································································140

ip address ····························································································································································141

name·····································································································································································142

reset counters interface vlan-interface ···············································································································142

shutdown ······························································································································································143

vlan ·······································································································································································144

Port-based VLAN configuration commands···············································································································145

display port ··························································································································································145

port········································································································································································146

port access vlan···················································································································································147

port hybrid pvid···················································································································································147

port hybrid vlan ···················································································································································149

port link-type ························································································································································150

port trunk permit vlan··········································································································································151

port trunk pvid······················································································································································153

MAC address-based VLAN configuration commands ·····························································································154

display mac-vlan··················································································································································154

display mac-vlan interface··································································································································156

mac-vlan enable ··················································································································································156

mac-vlan mac-address·········································································································································157

mac-vlan trigger enable······································································································································158

port pvid disable ·················································································································································159

vlan precedence ··················································································································································159

Protocol-based VLAN configuration commands ·······································································································160

display protocol-vlan interface···························································································································160

display protocol-vlan vlan···································································································································161

port hybrid protocol-vlan ····································································································································162

protocol-vlan ························································································································································164

IP subnet-based VLAN configuration commands ······································································································165

display ip-subnet-vlan interface··························································································································165

display ip-subnet-vlan vlan ·································································································································166

ip-subnet-vlan ·······················································································································································167

port hybrid ip-subnet-vlan ···································································································································168

Isolate-user-VLAN configuration commands·········································································································· 171

Isolate-user-VLAN configuration commands ··············································································································171

display isolate-user-vlan ······································································································································171

isolate-user-vlan····················································································································································173

isolate-user-vlan enable·······································································································································174

isolated-vlan enable ············································································································································174

port isolate-user-vlan············································································································································175

Voice VLAN configuration commands··················································································································· 177

Voice VLAN configuration commands·······················································································································177

display voice vlan oui ·········································································································································177

display voice vlan state ······································································································································178

voice vlan aging··················································································································································179

voice vlan enable ················································································································································180

voice vlan mac-address ······································································································································180

voice vlan mode auto··········································································································································181

v

voice vlan qos······················································································································································182

voice vlan qos trust··············································································································································183

voice vlan security enable ··································································································································184

GVRP configuration commands ····························································································································· 185

GVRP configuration commands··································································································································185

display garp statistics··········································································································································185

display garp timer ···············································································································································186

display gvrp local-vlan········································································································································187

display gvrp state ················································································································································187

display gvrp statistics ··········································································································································189

display gvrp status···············································································································································190

display gvrp vlan-operation ·······························································································································190

garp timer hold····················································································································································191

garp timer join·····················································································································································192

garp timer leave ··················································································································································192

garp timer leaveall ··············································································································································193

gvrp·······································································································································································194

gvrp registration ··················································································································································194

reset garp statistics ··············································································································································195

QinQ configuration commands ····························································································································· 197

QinQ configuration commands··································································································································197

qinq enable··························································································································································197

qinq ethernet-type················································································································································198

qinq transparent-vlan ··········································································································································199

qinq vid ································································································································································200

raw-vlan-id inbound ············································································································································201

LLDP configuration commands································································································································ 202

LLDP configuration commands ····································································································································202

display lldp local-information·····························································································································202

display lldp neighbor-information······················································································································206

display lldp statistics ···········································································································································211

display lldp status················································································································································213

display lldp tlv-config ··········································································································································214

lldp admin-status··················································································································································216

lldp check-change-interval ··································································································································217

lldp compliance admin-status cdp ·····················································································································218

lldp compliance cdp ···········································································································································218

lldp enable ···························································································································································219

lldp encapsulation snap······································································································································219

lldp fast-count·······················································································································································220

lldp hold-multiplier···············································································································································221

lldp management-address-format string ············································································································221

lldp management-address-tlv······························································································································222

lldp notification remote-change enable·············································································································223

lldp timer notification-interval ·····························································································································223

lldp timer reinit-delay ··········································································································································224

lldp timer tx-delay················································································································································224

lldp timer tx-interval ·············································································································································225

lldp tlv-enable·······················································································································································225

Index ········································································································································································ 228

1

Ethernet interface configuration commands

General Ethernet interface configuration

commands

broadcast-suppression

Syntax

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

undo broadcast-suppression

View

Ethernet interface view, port group view

Default level

2: System level

Parameters

ratio: Sets the broadcast suppression threshold as a percentage of the port transmission capability, in the

range 1 to 100. The smaller the percentage, the less broadcast traffic is allowed to pass through.

pps max-pps: Sets the broadcast suppression threshold in pps to limit the number of broadcast packets

passing through the Ethernet port per second.

• For a Gigabit port, the value range is 1 to 1488100.

• For a 10-Gigabit port, the value range is 1 to 14881000.

kbps max-bps: Sets the broadcast suppression threshold in kbps to limit the number of kilobits of

broadcast traffic passing through the Ethernet port per second.

• For a Gigabit port, the value range is 1 to 1000000.

• For a 10-Gigabit port, the value range is 1 to 10000000.

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, the configuration takes effect only on the current

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

2

NOTE:

• If you set different broadcast suppression thresholds in Ethernet interface view or port-group view

multiple times, the one configured last takes effect.

• For a particular type of traffic, confi

g

ure either storm suppression or storm control, but not both. If both

of them are configured, you may fail to achieve the expected storm control effect.

Examples

# Set the broadcast suppression threshold to 20% on Ethernet interface GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] broadcast-suppression 20

# Set the broadcast suppression threshold to 20% on all ports in manual port group group1.

<Sysname> system-view

[Sysname] port-group manual group1

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

[Sysname-port-group-manual-group1] group-member gigabitethernet 1/0/2

[Sysname-port-group-manual-group1] broadcast-suppression 20

description

Syntax

description text

undo description

View

Ethernet interface view

Default level

2: System level

Parameters

text: Creates an interface description, a string of 1 to 80 characters. Valid characters and symbols

include English letters (A to Z, a to z), digits (0 to 9), special English characters, spaces, and other

Unicode characters and symbols.

NOTE:

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

• To use a type of Unicode characters or symbols in an interface description, install the specific input

method editor and lo

g

in to the device throu

g

h remote lo

g

in software that supports this 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 current interface.

Use the undo description command to restore the default.

3

The default description of an interface is the interface name plus Interface. For example,

GigabitEthernet1/0/1 Interface.

Related commands: display interface.

Examples

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

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] 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 as GE port or 10-GE port..

|: Filters command output by specifying a regular expression. For more information about regular

expressions, see the 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, which is 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 the inbound traffic statistics for all GigabitEthernet interfaces.

<Sysname> display counters inbound interface gigabitethernet

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

GE1/0/1 100 100 0 0

GE1/0/2 0 0 0 0

GE1/0/3 Overflow Overflow Overflow Overflow

4

GE1/0/4 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. You can specify

the direction of the packets by using the inbound or outbound keyword.

Broadcast (pkts)

Total number of broadcast packets received/sent through the interface. You

can specify the direction of the packets by using the inbound or outbound

keyword.

Multicast (pkts)

Total number of multicast packets received/sent through the interface. You can

specify the direction of the packets by using the inbound or outbound keyword.

Err (pkts)

Total number of error packets received/sent through the interface. You can

specify the direction of the packets by using the inbound or outbound keyword.

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 statistic of any other type 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 as GE port or 10-GE port..

|: Filters command output by specifying a regular expression. For more information about regular

expressions, see the 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, which is a case sensitive string of 1 to 256 characters.

5

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.

As for the sampling interval, you can use the flow-interval command to set the sampling interval. The

system default is five minutes.

Related commands: flow-interval.

Examples

# Display 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)

GE1/0/1 0 -- --

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/sending packets during the

sampling interval. You can specify the direction of the packets using the

inbound and outbound keyword.

Broadcast (pkts/sec)

Average rate (packets per second) of receiving/sending broadcast packets

during the sampling interval. You can specify the direction of the packets using

the inbound and outbound keyword.

Multicast (pkts/sec)

Average rate (packets per second) of receiving/sending multicast packets

during the sampling interval. You can specify the direction of the packets using

the inbound and outbound keyword.

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 statistic of any other type is greater than 14 decimal

digits.

--: not supported. The statistical item is not supported.

display interface

Syntax

display interface [ interface-type [ interface-number ] ] [ | { begin | exclude | include }

regular-expression ]

View

Any view

6

Default level

1: Monitor level

Parameters

interface-type: Specifies an interface type.

interface-number: Specifies an interface number.

|: Filters command output by specifying a regular expression. For more information about regular

expressions, see the 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, which is a case sensitive string of 1 to 256 characters.

Description

Use the display interface command to display detailed information about interfaces, including their

operating status.

• If neither interface type nor interface number is specified, the command displays detailed

information about all interfaces.

• If only interface type is specified, the command displays detailed information about all interfaces of

the particular type.

• If both interface type and interface number are specified, the command displays detailed

information about only the specified interface.

Related commands: interface.

Examples

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

<Sysname> display interface gigabitethernet 1/0/2

GigabitEthernet1/0/1 current state: DOWN

IP Packet Frame Type: PKTFMT_ETHNT_2, Hardware Address: 0023-8927-b001

Description: GigabitEthernet1/0/1 Interface

Loopback is not set

Media type is twisted pair

Port hardware type is 1000_BASE_T

Unknown-speed mode, unknown-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: 1

Mdi type: auto

Link delay is 0(sec)

Port link-type: access

Tagged VLAN ID : none

7

Untagged VLAN ID : 1

Port priority: 0

Peak value of input: 0 bytes/sec, at 2000-04-26 17:18:22

Peak value of output: 0 bytes/sec, at 2000-04-26 17:18:22

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

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

Input (total): 0 packets, 0 bytes

0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses

Input (normal): 0 packets, - bytes

0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses

Input: 0 input errors, 0 runts, 0 giants, 0 throttles

0 CRC, 0 frame, - overruns, 0 aborts

- ignored, - parity errors

Output (total): 0 packets, 0 bytes

0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses

Output (normal): 0 packets, - 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

0 lost carrier, - no carrier

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

Field Description

current state

Physical state of the Ethernet interface. For more information, see Table

4.

IP Packet Frame Type Ethernet framing format on the port.

Hardware address Hardware address of the port.

Description Description of the port.

Loopback Loopback testing status on the port.

Unknown-speed mode The port will negotiate a speed with its peer.

unknown-duplex mode The port will negotiate a duplex mode with its peer.

The Maximum Frame Length The maximum Ethernet frame length allowed on the port.

Broadcast MAX-ratio

Broadcast suppression threshold as a percentage of the port

transmission capability. When the threshold is exceeded, the port

drops broadcast packets.

Unicast MAX-ratio

Unknown unicast suppression threshold as a percentage of the port

transmission capability. When the threshold is exceeded, the port

drops unknown unicast packets.

Multicast MAX-ratio

Multicast suppression threshold as a percentage of the port

transmission capability. When the threshold is exceeded, the port

drops multicast packets.

PVID Default VLAN ID.

Mdi type Cable type.

Port link-type Link type of the port, which could be access, trunk, and hybrid.

8

Field Description

Tagged VLAN ID VLANs for which the port sends packets without removing VLAN tags.

Untagged VLAN ID VLANs for which the port sends packets after removing VLAN tags.

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 in the last 300 seconds, in pps

and Bps.

Input (total): 0 packets, 0 bytes

0 unicasts, 0 broadcasts, 0

multicasts, 0 pauses

Inbound traffic statistics (in packets and bytes) for the port. All inbound

normal and abnormal packets, and pause frames were counted.

Input (normal): 0 packets, - bytes

0 unicasts, 0 broadcasts, 0

multicasts, 0 pauses

Inbound normal traffic and pause frame statistics (in packets and

bytes) for the port.

input errors Inbound error packet statistics.

runts

Inbound frames shorter than 64 bytes, in correct format, and

containing valid CRCs.

giants

Frames received that were longer than the maximum frame length

supported on the interface.

• For an Ethernet interface that forbids jumbo frames, giants refer to

frames that are longer than 1536 bytes (without VLAN tags) or

1540 bytes (with VLAN tags).

• For an Ethernet interface that permits jumbo frames, giants refer to

frames that are longer than 9212 bytes (without VLAN tags) or 9216

bytes (with VLAN tags).

throttles

The number of times that the port shut down because of buffer or CPU

overload.

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, including:

• Fragment frames—CRC error frames shorter than 64 bytes. The

length could be an integer or non-integer value.

• Jabber frames—Frames that were longer than the maximum frame

length supported on the Ethernet interface and contained checksum

errors (the frame lengths in bytes may or may not be integers). For

an Ethernet interface that permits jumbo frames, jabber frames refer

to frames that are longer than 9212 bytes (without VLAN tags) or

9216 bytes (with VLAN tags) and contain checksum errors; for an

Ethernet interface that forbids jumbo frames, jabber frames refer to

frames that are longer than 1536 bytes (without VLAN tags) or

1540 bytes (with VLAN tags) and contain checksum errors.

• Unknown operation code frames—Non-pause MAC control

frames.

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H3C S5120-EI Series Command Reference Manual

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