H3C S5120-SI Series Installation manual

H3C S5120-SI Switch Series
Layer 2 - LAN Switching Command Reference
Hangzhou H3C Technologies Co., Ltd.
http://www.h3c.com
Software version: Release 1505
Document version: 6W101-20111108

Copyright © 2011, Hangzhou H3C Technologies Co., Ltd. and its licensors
All rights reserved
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, , H3Care,
, TOP G, , IRF, NetPilot, Neocean, NeoVTL,
SecPro, SecPoint, SecEngine, SecPath, Comware, Secware, Storware, NQA, VVG, V2G, VnG, 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-SI documentation set includes 10 command references, which describe the commands
and command syntax options for the H3C S5120-SI Switch Series, Release 1505.
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-SI 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-SI series
Added and modified commands
Compared to Release1101, Release1505 adds, modifies, and deletes the following commands:
Command reference Added and modified commands
Ethernet interface
commands
Added commands:
•link-delay
•loopback-detection multi-port-mode enable
•display interface brief down
Modified commands:
•display brief interface is changed into display interface brief
Loopback and null
interface commands —
MAC address table
commands
Modified commands: The disable-forwarding keyword is deleted from the
mac-address max-mac-count command.

Command reference Added and modified commands
Ethernet link aggregation
commands
Added commands:
•display link-aggregation load-sharing mode
•lacp period short
•link-aggregation lacp traffic-redirect-notification enable
•link-aggregation load-sharing mode
•link-aggregation load-sharing mode local-first
Modified commands:
The lacp port-priority command is changed to link-aggregation port-priority.
Port isolation commands —
MSTP commands
Added commands:
•bpdu-drop any
•display stp bpdu-statistics
VLAN commands
Added commands:
•MAC-based VLAN configuration commands
•Protocol-based VLAN configuration commands
•QoS priority configuration commands for voice packets
GVRP commands —
QinQ commands QinQ configuration commands are all newly added.
LLDP commands —
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-SI documentation set
The H3C S5120-SI documentation set includes:
Category Documents Purposes
Marketing brochures Describe product specifications and benefits.
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
Switches Pluggable Modules
Manual
Describes the models, appearances, and
specifications of the pluggable modules available for
the products.
Quick Start Guide Provides a quick guide to hardware installation.
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.
Hardware
installation
Pluggable SFP[SFP+][XFP]
Transceiver Modules Installation
Guide
Guides you through installing SFP/SFP+/XFP
transceiver modules.
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,

Category Documents Purposes
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
[e-mail]
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
broadcast-suppression ·············································································································································1
description·································································································································································2
display interface ·······················································································································································3
display loopback-detection··································································································································· 11
display port-group manual ··································································································································· 11
display storm-constrain ········································································································································· 12
duplex····································································································································································· 14
flow-control····························································································································································· 15
flow-interval···························································································································································· 15
group-member························································································································································ 16
interface·································································································································································· 16
jumboframe enable ··············································································································································· 17
link-delay ································································································································································ 17
loopback ································································································································································ 18
loopback-detection control enable ······················································································································ 19
loopback-detection enable ··································································································································· 19
loopback-detection interval-time··························································································································· 20
loopback-detection multi-port-mode enable ········································································································ 21
loopback-detection per-vlan enable ···················································································································· 22
mdi ·········································································································································································· 23
multicast-suppression············································································································································· 23
port auto-power-down··········································································································································· 24
port bridge enable ················································································································································ 25
port-group manual················································································································································· 26
reset counters interface ········································································································································· 26
shutdown ································································································································································ 27
speed ······································································································································································ 28
speed auto ····························································································································································· 28
storm-constrain ······················································································································································· 29
storm-constrain control ·········································································································································· 30
storm-constrain enable log ··································································································································· 31
storm-constrain enable trap ·································································································································· 31
storm-constrain interval ········································································································································· 32
unicast-suppression················································································································································ 33
virtual-cable-test ····················································································································································· 34
Loopback and null interface configuration commands····························································································36
description······························································································································································ 36
display interface loopback··································································································································· 37
display interface null ············································································································································· 40
interface loopback ················································································································································ 41
interface null··························································································································································· 41
reset counters interface loopback ························································································································ 42
reset counters interface null ·································································································································· 42
shutdown ································································································································································ 43
MAC address table configuration commands ·········································································································44
display mac-address ············································································································································· 44
display mac-address aging-time ·························································································································· 45

ii
display mac-address statistics ······························································································································ 46
mac-address (interface view)································································································································ 47
mac-address (system view) ··································································································································· 48
mac-address max-mac-count (interface view) ····································································································· 49
mac-address timer ················································································································································· 50
Ethernet link aggregation configuration commands································································································51
description······························································································································································ 51
display interface bridge-aggregation·················································································································· 51
display lacp system-id ··········································································································································· 53
display link-aggregation load-sharing mode······································································································ 54
display link-aggregation member-port ················································································································ 56
display link-aggregation summary······················································································································· 58
display link-aggregation verbose ························································································································ 59
enable snmp trap updown ··································································································································· 61
interface bridge-aggregation ······························································································································· 62
lacp period short ··················································································································································· 63
lacp system-priority················································································································································ 63
link-aggregation lacp traffic-redirect-notification enable··················································································· 64
link-aggregation load-sharing mode ··················································································································· 65
link-aggregation load-sharing mode local-first ··································································································· 65
link-aggregation port-priority································································································································ 66
link-aggregation mode·········································································································································· 67
port link-aggregation group ································································································································· 67
reset counters interface ········································································································································· 68
reset lacp statistics················································································································································· 68
shutdown ································································································································································ 69
Port isolation configuration commands ····················································································································70
display port-isolate group····································································································································· 70
port-isolate enable················································································································································· 71
port-isolate group ·················································································································································· 72
MSTP configuration commands·································································································································73
active region-configuration··································································································································· 73
bpdu-drop any ······················································································································································· 73
check region-configuration··································································································································· 74
display stp ······························································································································································ 75
display stp abnormal-port····································································································································· 80
display stp bpdu-statistics ····································································································································· 81
display stp down-port············································································································································ 84
display stp history·················································································································································· 85
display stp ignored-vlan········································································································································ 86
display stp region-configuration ·························································································································· 87
display stp root ······················································································································································ 88
display stp tc·························································································································································· 88
instance ·································································································································································· 89
region-name ··························································································································································· 90
reset stp ·································································································································································· 91
revision-level··························································································································································· 92
stp bpdu-protection················································································································································ 92
stp bridge-diameter ··············································································································································· 93
stp compliance······················································································································································· 93
stp config-digest-snooping ···································································································································· 94
stp cost···································································································································································· 95
stp edged-port························································································································································ 96

iii
stp enable······························································································································································· 97
stp ignored vlan····················································································································································· 98
stp loop-protection················································································································································· 99
stp max-hops ·························································································································································· 99
stp mcheck····························································································································································100
stp mode·······························································································································································101
stp no-agreement-check ······································································································································101
stp pathcost-standard ··········································································································································102
stp point-to-point ··················································································································································103
stp port priority ····················································································································································104
stp port-log ···························································································································································105
stp priority ····························································································································································105
stp region-configuration ······································································································································106
stp root primary ···················································································································································107
stp root secondary···············································································································································107
stp root-protection················································································································································108
stp tc-protection····················································································································································109
stp tc-protection threshold ···································································································································109
stp timer forward-delay·······································································································································110
stp timer hello·······················································································································································111
stp timer max-age ················································································································································111
stp timer-factor ·····················································································································································112
stp transmit-limit ···················································································································································113
vlan-mapping modulo ·········································································································································114
VLAN configuration commands ····························································································································· 115
VLAN configuration commands··································································································································115
description····························································································································································115
display interface vlan-interface ··························································································································116
display vlan··························································································································································118
interface vlan-interface········································································································································119
ip address ····························································································································································120
name·····································································································································································121
reset counters interface vlan-interface ···············································································································121
shutdown ······························································································································································122
vlan ·······································································································································································122
Port-based VLAN configuration commands···············································································································124
display port ··························································································································································124
port········································································································································································125
port access vlan···················································································································································125
port hybrid pvid···················································································································································126
port hybrid vlan ···················································································································································128
port link-type ························································································································································129
port trunk permit vlan··········································································································································130
port trunk pvid······················································································································································132
MAC address-based VLAN configuration commands ·····························································································133
display mac-vlan··················································································································································133
display mac-vlan interface··································································································································135
mac-vlan enable ··················································································································································135
mac-vlan mac-address·········································································································································136
mac-vlan trigger enable······································································································································137
port pvid disable ·················································································································································138
vlan precedence ··················································································································································138
Protocol-based VLAN configuration commands ·······································································································139
display protocol-vlan interface···························································································································139

iv
display protocol-vlan vlan···································································································································140
port hybrid protocol-vlan ····································································································································141
protocol-vlan ························································································································································143
Voice VLAN configuration commands··················································································································· 145
display voice vlan oui ·········································································································································145
display voice vlan state ······································································································································146
voice vlan aging··················································································································································147
voice vlan enable ················································································································································148
voice vlan mac-address ······································································································································148
voice vlan mode auto··········································································································································149
voice vlan qos······················································································································································150
voice vlan qos trust··············································································································································151
voice vlan security enable ··································································································································152
GVRP configuration commands ····························································································································· 153
display garp statistics··········································································································································153
display garp timer ···············································································································································154
display gvrp local-vlan········································································································································155
display gvrp state ················································································································································155
display gvrp statistics ··········································································································································157
display gvrp status···············································································································································158
display gvrp vlan-operation ·······························································································································159
garp timer hold····················································································································································159
garp timer join·····················································································································································160
garp timer leave ··················································································································································161
garp timer leaveall ··············································································································································161
gvrp·······································································································································································162
gvrp registration ··················································································································································163
reset garp statistics ··············································································································································163
QinQ configuration commands ····························································································································· 165
qinq enable··························································································································································165
qinq ethernet-type················································································································································166
qinq vid ································································································································································167
raw-vlan-id inbound ············································································································································168
LLDP configuration commands································································································································ 170
display lldp local-information·····························································································································170
display lldp neighbor-information······················································································································174
display lldp statistics ···········································································································································179
display lldp status················································································································································181
display lldp tlv-config ··········································································································································182
lldp admin-status··················································································································································184
lldp check-change-interval ··································································································································185
lldp compliance admin-status cdp ·····················································································································186
lldp compliance cdp ···········································································································································186
lldp enable ···························································································································································187
lldp encapsulation snap······································································································································187
lldp fast-count·······················································································································································188
lldp hold-multiplier···············································································································································189
lldp management-address-format string ············································································································189
lldp management-address-tlv······························································································································190
lldp notification remote-change enable·············································································································191
lldp timer notification-interval ·····························································································································191
lldp timer reinit-delay ··········································································································································192