H3C WX Series Installation manual

H3C WX Series Access Controllers
High Availability Command Reference
Hangzhou H3C Technologies Co., Ltd.
http://www.h3c.com
Software version: WX3000-CMW520-R3308 (WX3024E)
WX5004-CMW520-R2308 (WX5000 series)
WX6103-CMW520-R2308 (WX6000 series)
Document version: 6W106-20120824

Copyright © 2010-2012, 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 WX documentation set includes 10 command references, which describe the commands and
command syntax options available for the H3C WX Series Access Controllers.
The High Availability Command Reference describes VRRP, track, and stateful failover configuration
commands.
NOTE:
Support of the H3C WX series access controllers for commands may vary by device model. For the
command matrixes, see
About the WX Series Access Controllers Command References .
This preface includes:
•Audience
•Conventions
•About the H3C WX 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 WX series
Conventions
This section describes the conventions used in this documentation set.
Command conventions
Convention Descri
p
tion
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.

Convention Descri
p
tion
[ x | y | ... ] *
Asterisk marked square brackets enclose optional syntax choices separated by vertical
bars, from which you select one choice, 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 Descri
p
tion
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 Descri
p
tion
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.
Port numbering in examples
The port numbers in this document are for illustration only and might be unavailable on your device.
About the H3C WX documentation set
The H3C WX documentation set includes:
Cate
g
or
y
Documents
Pur
p
oses
Product description and
specifications
Marketing brochures Describe product specifications and benefits.
Technology white papers Provide an in-depth description of software
features and technologies.
Hardware specifications
and installation
Card manuals
Provide the hardware specifications of cards
and describe how to install and remove the
cards.
Installation guide Provides a complete guide to hardware
installation and hardware specifications.

Cate
g
or
y
Documents
Pur
p
oses
Software configuration
Getting started guide
Guides you through the main functions of
your device, and describes how to install
and log in to your device, perform basic
configurations, maintain software, and
troubleshoot your device.
Configuration guides Describe software features and
configuration procedures.
Command references Provide a quick reference to all available
commands.
Web-based configuration guide Describes configuration procedures through
the web interface.
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
servi[email protected]
http://www.h3c.com
Documentation feedback
You can e-mail your comments about product documentation to inf[email protected].
We appreciate your comments.

i
Contents
VRRP configuration commands ··································································································································· 1
display vrrp ·······························································································································································1
display vrrp statistics ················································································································································8
reset vrrp statistics ················································································································································· 12
vrrp method···························································································································································· 12
vrrp mode······························································································································································· 13
vrrp un-check ttl······················································································································································ 14
vrrp vrid authentication-mode ······························································································································ 14
vrrp vrid preempt-mode ········································································································································ 15
vrrp vrid priority····················································································································································· 16
vrrp vrid timer advertise········································································································································ 17
vrrp vrid track ························································································································································ 18
vrrp vrid track interface ········································································································································ 19
vrrp vrid virtual-ip ·················································································································································· 20
vrrp vrid weight track············································································································································ 21
Stateful failover configuration commands ················································································································23
dhbk enable ··························································································································································· 23
dhbk vlan································································································································································ 23
display dhbk status················································································································································ 24
Track configuration commands·································································································································26
display track··························································································································································· 26
track interface ························································································································································ 28
track interface protocol········································································································································· 29
track nqa ································································································································································ 30
Index ···········································································································································································32

1
VRRP configuration commands
NOTE:
•Support of the H3C WX series access controllers for commands may vary by device model. For the
command matrixes, see
About the WX Series Access Controllers Command References .
•At present, the interfaces that VRRP involves can be only LAN interfaces.
display vrrp
Syntax
display vrrp [ verbose ] [ interface interface-type interface-number [ vrid virtual-router-id ] ] [ |{ begin |
exclude | include } regular-expression ]
View
Any view
Default level
1: Monitor level
Parameters
verbose: Displays detailed state information of VRRP groups.
interface interface-type interface-number: Displays VRRP group state information of the specified
interface. The interface-type interface-number arguments specify an interface by its type and number.
vrid virtual-router-id: Displays state information of the specified VRRP group. The virtual-router-id
argument specifies a VRRP group by its group number, which ranges from 1 to 255.
|: Filters command output by specifying a regular expression. For more information about regular
expressions, see Fundamentals Configuration Guide.
begin: Displays the first line that matches the specified regular expression and all lines that follow.
exclude: Displays all lines that do not match the specified regular expression.
include: Displays all lines that match the specified regular expression.
regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.
Description
Use display vrrp to display the state information of VRRP groups.
If you do not specify verbose, only the brief state information of VRRP group is displayed.
If you specify both an interface and a VRRP group, only the state information of the specified VRRP group
on the interface is displayed. If you only specify an interface, the state information of all the VRRP groups
on the interface is displayed. If you specify neither, the state information of all the VRRP groups on the
router is displayed.

2
Examples
# When VRRP is operating in standard protocol mode, display brief information about all VRRP groups
on the router.
<Sysname> display vrrp
IPv4 Standby Information:
Run Mode : Standard
Run Method : Virtual MAC
Total number of virtual routers : 1
Interface VRID State Run Adver Auth Virtual
Pri Timer Type IP
---------------------------------------------------------------------
Vlan2 1 Master 140 1 Simple 1.1.1.1
Table 1 Command output (standard protocol mode)
Field Descri
p
tion
Run Mode
Current VRRP working mode:
•Standard—Standard protocol mode.
•Load Balance—Load balancing mode.
Run Method
Current VRRP running mode:
•Real MAC—Real MAC mode, which means the virtual IP address of
the VRRP group is mapped to the real MAC address of the interface.
•Virtual MAC—Virtual MAC mode, which means the virtual IP address
of the VRRP group is mapped to the virtual MAC address.
Total number of virtual routers Number of VRRP groups.
Interface Interface to which the VRRP group belongs.
VRID VRRP group number.
Run Pri
Running priority of the router, or in other words, the current priority of the
router. With VRRP tracking configured, when the state of the monitored
interface or track entry changes, the priority of the router changes.
Adver. Timer VRRP advertisement interval, in seconds.
Auth Type
Authentication type:
•None—No authentication.
•Simple—Simple text authentication.
•MD5—MD5 authentication.
Virtual IP Virtual IP address of the VRRP group.
# When VRRP is operating in standard protocol mode, display detailed information about all VRRP
groups on the router.
<Sysname> display vrrp verbose
IPv4 Standby Information:
Run Mode : Standard
Run Method : Virtual MAC
Total number of virtual routers : 1
Interface Vlan-interface2
VRID : 1 Adver Timer : 1
Admin Status : Up State : Master

3
Config Pri : 150 Running Pri : 140
Preempt Mode : Yes Delay Time : 5
Auth Type : Simple Key : hello
Virtual IP : 1.1.1.1
Virtual MAC : 0000-5e00-0101
Master IP : 1.1.1.2
VRRP Track Information:
Track Interface: Vlan3 State : Down Pri Reduced : 10
Track Object : 1 State : Positive Pri Reduced : 50
Table 2 Command output (standard protocol mode)
Field Descri
p
tion
Run Mode
Current VRRP working mode:
•Standard—Standard protocol mode.
•Load Balance—Load balancing mode.
Run Method
Current VRRP running mode:
•Real MAC—Real MAC mode, which means the virtual IP address of
the VRRP group is mapped to the real MAC address of the interface.
•Virtual MAC—Virtual MAC mode, which means the virtual IP address
of the VRRP group is mapped to the virtual MAC address.
Total number of virtual routers Number of VRRP groups.
Interface Interface to which the VRRP group belongs.
VRID ID of the VRRP group.
Adver. Timer VRRP advertisement interval, in seconds.
Admin Status
Administrative state:
•UP
•DOWN
State
Status of the router in the VRRP group:
•Master
•Backup
•Initialize
Config Pri Configured priority of the router, or in other words, the priority value
specified by using the vrrp vrid priority command.
Running Pri
Running priority of the router, or in other words, the current priority of the
router. With VRRP tracking configured, when the state of the monitored
interface or track entry changes, the priority of the router changes.
Preempt Mode
Preemptive mode:
•Yes—The router in the VRRP group operates in preemptive mode.
•No—The router in the VRRP group operates in non preemptive mode.
Delay Time Preemption delay, in seconds.
Auth Type
Authentication type:
•None—No authentication.
•Simple—Simple text authentication.
•MD5—MD5 authentication.

4
Field Descri
p
tion
Key Authentication key.
Virtual IP Virtual IP address of the VRRP group.
Virtual MAC Virtual MAC address that corresponds to the virtual IP address of the
VRRP group. It is displayed only when the router is the master.
Master IP Primary IP address of the interface where the router in master state
resides.
VRRP Track Information
Information about the tracked interface or object. It is displayed only
when the vrrp vrid track or vrrp vrid track interface command is
executed.
Track Interface The interface to be tracked. It is displayed only when the vrrp vrid track
interface command is executed.
Track Object The track entry to be tracked. It is displayed only when the vrrp vrid track
command is executed.
State
State of the tracked interface or track entry.
State of a tracked interface:
•Up
•Down
•Removed
State of a track entry:
•Invalid
•Negative
•Positive
•Not existing
Pri Reduced
The priority value that is reduced when the monitored interface is down
or removed, or when the status of the monitored track entry turns to
negative. It is displayed only when the vrrp vrid track interface command
or the vrrp vrid track command is executed.
Switchover Switchover mode. When the status of the monitored track entry turns to
negative, the backup immediately switches to the master.
# When VRRP is operating in load balance mode, display brief information about all VRRP groups on the
router.
<Sysname> display vrrp
IPv4 Standby Information:
Run Mode : Load Balance
Run Method : Virtual MAC
Total number of virtual routers : 1
Interface VRID State Run Address Active
Pri
----------------------------------------------------------------------
Vlan2 1 Master 140 1.1.1.1 Local
----- VF 1 Active 255 000f-e2ff-0011 Local

5
Table 3 Command output (load balancing mode)
Field Descri
p
tion
Run Mode
Current VRRP working mode:
•Standard—Standard protocol mode.
•Load Balance—Load balancing mode.
Run Method
Current VRRP running mode, including
•Real MAC—Real MAC mode, which means the virtual IP address of the
VRRP group is mapped to the real MAC address of the interface.
•Virtual MAC—Virtual MAC mode, which means the virtual IP address of
the VRRP group is mapped to the virtual MAC address.
Total number of virtual routers Number of VRRP groups.
Interface Interface to which the VRRP group belongs.
VRID ID of the VRRP group or ID of the virtual forwarder (VF).
State
•If the VRID is number, this field indicates the status of the router in the
VRRP group, including Master, Backup, and Initialize.
•If the VRID is VF number, this field indicates the status of the VF in the
VRRP group, including Active, Listening, and Initialize.
Run Pri
•If the VRID is number, this field indicates the running priority of the
router, or in other words, the current priority of the router. With VRRP
tracking configured, if the state of the monitored interface or track entry
changes, the priority of the router changes.
•If the VRID is VF number, this field indicates the running priority of the
VF. With VF tracking configured, if the state of the monitored track entry
changes, the priority of the VF changes.
Address
•If the VRID is number, this field indicates the virtual IP address of the
VRRP group.
•If the VRID is VF number, this field indicates the virtual MAC address of
the VF.
Active
•If the VRID is number, this field indicates the IP address of the interface
of the master. If the current router is the master, it is displayed as local.
•If the VRID is VF number, this field indicates the IP address of the
interface of the active virtual forwarder (AVF). If the current VF is the
AVF, it is displayed as local.
# When VRRP is operating in load balancing mode, display detailed information about all VRRP groups
on the router.
<Sysname> display vrrp verbose
IPv4 Standby Information:
Run Mode : Load Balance
Run Method : Virtual MAC
Total number of virtual routers : 1
Interface Vlan-interface2
VRID : 1 Adver Timer : 1
Admin Status : Up State : Master
Config Pri : 120 Running Pri : 110
Preempt Mode : Yes Delay Time : 5
Auth Type : None

6
Virtual IP : 10.1.1.1
Member IP List : 10.1.1.2 (Local, Master)
10.1.1.3 (Backup)
VRRP Track Information:
Track Interface: Vlan3 State : Down Pri Reduced : 10
Track Object : 1 State : Positive Pri Reduced : 50
Forwarder Information: 2 Forwarders 1 Active
Config Weight : 255
Running Weight : 255
Forwarder 01
State : Active
Virtual MAC : 000f-e2ff-0011 (Owner)
Owner ID : 0000-5e01-1101
Priority : 255
Active : local
Forwarder 02
State : Listening
Virtual MAC : 000f-e2ff-0012 (Learnt)
Owner ID : 0000-5e01-1103
Priority : 127
Active : 10.1.1.3
Forwarder Weight Track Information:
Track Object : 1 State : Positive Weight Reduced : 250
Table 4 Command output (load balancing mode)
Field Descri
p
tion
Run Mode
Current VRRP working mode, including
•Standard—Standard protocol mode.
•Load Balance—Load balancing mode.
Run Method
Current VRRP running mode, including
•Real MAC—Real MAC mode, which means the virtual IP address of
the VRRP group is mapped to the real MAC address of the interface.
•Virtual MAC—Virtual MAC mode, which means the virtual IP address
of the VRRP group is mapped to the virtual MAC address.
Total number of virtual routers Number of VRRP groups.
Interface Interface to which the VRRP group belongs.
VRID ID of the VRRP group.
Adver Timer VRRP advertisement interval, in seconds.
Admin Status
Administrative state:
•UP
•DOWN
State
Status of the router in the VRRP group:
•Master
•Backup
•Initialize

7
Field Descri
p
tion
Config Pri Configured priority of the router, that is, the priority value specified by
using the vrrp vrid priority command.
Running Pri
Running priority of the router, that is, the current priority of the router.
With VRRP tracking configured, if the state of the monitored interface or
track entry changes, the priority of the router changes.
Preempt Mode
Preemptive mode:
•Yes—The router in the VRRP group operates in preemptive mode.
•No—The router in the VRRP group operates in non preemptive mode.
Delay Time Preemption delay, in seconds.
Auth Type
Authentication type:
•None—No authentication.
•Simple—Simple text authentication.
•MD5—MD5 authentication.
Key Authentication key.
Virtual IP Virtual IP address of the VRRP group.
Member IP List
List of IP addresses of members in the VRRP group. This address list is
displayed only when the VRRP group is operating in load balancing
mode.
•Local—IP address of the local device.
•Master—IP address of the master.
•Backup—IP address of the backup.
VRRP Track Information Information of the tracked interface or track entry.
Track Interface The interface to be tracked. It is displayed only when the vrrp vrid track
interface command is executed.
Track Object The object to be tracked. It is displayed only when the vrrp vrid track
command is executed.
State
State of the tracked interface or track entry.
State of a tracked interface:
•Up
•Down
•Removed
State of a track entry:
•Invalid
•Negative
•Positive
•Not existing
Pri Reduced
The priority value that is reduced when the monitored interface is down
or removed, or when the status of the monitored track entry turns to
negative. It is displayed only when the vrrp vrid track interface command
or the vrrp vrid track command is executed.
Switchover Switchover mode. When the status of the monitored track entry turns to
negative, the backup immediately switches to the master.

8
Field Descri
p
tion
Forwarder Information: 2
Forwarders 1 Active
VF Information: The number of VFs of the router is 2, and the number of
AVFs is 1.
Config Weight Configured weight of the VF, the value is 255.
Running Weight
Running weight of the VF, or in other words, the current weight of the VF.
When VF tracking is configured, if the state of the monitored track entry
changes, the weight of the VF changes.
Forwarder 01 Information about VF 01.
State
State of a VF:
•Active
•Listening
•Initialize
Virtual MAC Virtual MAC address of the VF.
Owner ID Real MAC address of the interface of the VF owner.
Priority VF priority.
Active The IP address of the interface of the AVF. If the current VF is the AVF, it
is displayed as local.
Forwarder Weight Track
Configuration
The weight track configuration of the VF. It is displayed only when the
vrrp vrid weight track command is executed.
Track Object Weight track entry. It is displayed only when the vrrp vrid weight track
command is executed.
State
A track entry has the following states:
•Invalid
•Negative
•Positive
•Not existing
Weight Reduced
The weight value that is reduced when the status of the monitored track
entry turns to negative. It is displayed only when the vrrp vrid weight
track command is executed.
display vrrp statistics
Syntax
display vrrp statistics [ interface interface-type interface-number [ vrid virtual-router-id ] ] [ |{ begin |
exclude | include } regular-expression ]
View
Any view
Default level
1: Monitor level
Parameters
interface interface-type interface-number: Displays VRRP group statistics for the specified interface. The
interface-type interface-number arguments specify an interface by its type and number.

9
vrid virtual-router-id: Displays statistics for the specified VRRP group. The virtual-router-id argument
specifies a VRRP group by its group number, which ranges from 1 to 255.
|: Filters command output by specifying a regular expression. For more information about regular
expressions, see Fundamentals Configuration Guide.
begin: Displays the first line that matches the specified regular expression and all lines that follow.
exclude: Displays all lines that do not match the specified regular expression.
include: Displays all lines that match the specified regular expression.
regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.
Description
Use display vrrp statistics to display VRRP group statistics.
If both an interface and a VRRP group are specified, this command displays only statistics for the
specified VRRP group on the interface. If only an interface is specified, this command displays statistics
for all VRRP groups on the interface. If no interface or VRRP group is specified, this command displays
statistics for all VRRP groups.
To clear VRRP group statistics, use the reset vrrp statistics command.
Related commands: reset vrrp statistics.
Examples
# When VRRP is operating in standard protocol mode, display the statistics for all VRRP groups.
<Sysname> display vrrp statistics
Interface : Vlan-interface2
VRID : 1
CheckSum Errors : 0 Version Errors : 0
Invalid Type Pkts Rcvd : 0 Advertisement Interval Errors : 0
IP TTL Errors : 0 Auth Failures : 0
Invalid Auth Type : 0 Auth Type Mismatch : 0
Packet Length Errors : 0 Address List Errors : 0
Become Master : 1 Priority Zero Pkts Rcvd : 0
Adver Rcvd : 0 Priority Zero Pkts Sent : 0
Adver Sent : 807
Global statistics
CheckSum Errors : 0
Version Errors : 0
VRID Errors : 0
# When VRRP is operating in load balancing mode, display the statistics for all VRRP groups.
<Sysname> display vrrp statistics
Interface : Vlan-interface2
VRID : 1
CheckSum Errors : 0 Version Errors : 0
Invalid Type Pkts Rcvd : 0 Advertisement Interval Errors : 0
IP TTL Errors : 0 Auth Failures : 0
Invalid Auth Type : 0 Auth Type Mismatch : 0
Packet Length Errors : 0 Address List Errors : 0
Become Master : 2 Redirect Timer Expires : 0
Become AVF : 1 Time-out Timer Expires : 0

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Adver Rcvd : 0 Request Rcvd : 0
Adver Sent : 1460 Request Sent : 1
Reply Rcvd : 0 Release Rcvd : 0
Reply Sent : 0 Release Sent : 0
Priority Zero Pkts Rcvd : 0 VF Priority Zero Pkts Rcvd : 0
Priority Zero Pkts Sent : 1 VF Priority Zero Pkts Sent : 0
Status Option Errors : 0
Global statistics
CheckSum Errors : 0
Version Errors : 0
VRID Errors : 0
Table 5 Command output (Standard protocol mode)
Field Descri
p
tion
Interface Interface to which the VRRP group belongs
VRID Serial number of the VRRP group
CheckSum Errors Number of packets with checksum errors
Version Errors Number of packets with version errors
Invalid Type Pkts Rcvd Number of packets with incorrect packet type
Advertisement Interval Errors Number of packets with advertisement interval errors
IP TTL Errors Number of packets with TTL errors
Auth Failures Number of packets with authentication failures
Invalid Auth Type Number of packets with authentication failures due to invalid
authentication types
Auth Type Mismatch Number of packets with authentication failures due to mismatching
authentication types
Packet Length Errors Number of packets with VRRP packet length errors
Address List Errors Number of packets with virtual IP address list errors
Become Master Number of times that the router worked as the master
Priority Zero Pkts Rcvd Number of received advertisements with the priority of 0
Advertise Rcvd Number of received advertisements
Priority Zero Pkts Sent Number of advertisements with the priority of 0 sent
Advertise Sent Number of advertisements sent
Global statistics Global statistics for all VRRP groups
CheckSum Errors Total number of packets with checksum errors
Version Errors Total number of packets with version errors
VRID Errors Total number of packets with VRID errors
Table 6 Command output (Load balancing mode)
Field Descri
p
tion
Interface Interface to which the VRRP group belongs

11
Field Descri
p
tion
VRID Serial number of the VRRP group
CheckSum Errors Number of packets with checksum errors
Version Errors Number of packets with version errors
Invalid Type Pkts Rcvd Number of packets with incorrect packet type
Advertisement Interval Errors Number of packets with advertisement interval errors
IP TTL Errors Number of packets with TTL errors
Auth Failures Number of packets with authentication failures
Invalid Auth Type Number of packets with authentication failures due to invalid
authentication types
Auth Type Mismatch Number of packets with authentication failures due to mismatching
authentication types
Packet Length Errors Number of packets with VRRP packet length errors
Address List Errors Number of packets with virtual IP address list errors
Become Master Number of times that the router worked as the master
Redirect Timer Expires Number of times that the redirect timer expires
Become AVF Number of times that the VF worked as the AVF
Time-out Timer Expires Number of times that the timeout timer expires
Advertise Rcvd Number of received advertisements
Request Rcvd Number of received requests
Advertise Sent Number of advertisements sent
Request Sent Number of requests sent
Reply Rcvd Number of received replies
Release Rcvd Number of received releases
Reply Sent Number of replies sent
Release Sent Number of releases sent
Priority Zero Pkts Rcvd Number of received advertisements with the priority of 0
VF Priority Zero Pkts Rcvd Number of received advertisements with the VF priority of 0
Priority Zero Pkts Sent Number of sent advertisements with the priority of 0
VF Priority Zero Pkts Sent Number of sent advertisements with the VF priority of 0
Status Option Errors Number of times that the status option errors
Global statistics Global statistics for all VRRP groups
CheckSum Errors Total number of packets with checksum errors
Version Errors Total number of packets with version errors
VRID Errors Total number of packets with VRID errors

12
reset vrrp statistics
Syntax
reset vrrp statistics [ interface interface-type interface-number [ vrid virtual-router-id ] ]
View
User view
Default level
1: Monitor level
Parameters
interface interface-type interface-number: Clears VRRP group statistics for the specified interface. The
interface-type interface-number arguments specify an interface by its type and number.
vrid virtual-router-id: Clears VRRP statistics for the specified VRRP group. The virtual-router-id argument
specifies a VRRP group by its group number, which ranges from 1 to 255.
Description
Use reset vrrp statistics to clear VRRP group statistics.
If you specify both an interface and a VRRP group, this command clears the statistics for the specified
VRRP group on the specified interface. If you specify only the interface, this command clears the statistics
for all VRRP groups on the specified interface. If you specify neither, this command clears the statistics for
all VRRP groups.
Related commands: display vrrp statistics.
Examples
# Clear the statistics for all the VRRP groups.
<Sysname> reset vrrp statistics
vrrp method
Syntax
vrrp method { real-mac | virtual-mac }
undo vrrp method
View
System view
Default level
2: System level
Parameters
real-mac: Maps the real MAC address of the interface to the virtual IP address of the VRRP group.
virtual-mac: Maps the virtual MAC address to the virtual IP address of the VRRP group.
Description
Use vrrp method to specify the type of the MAC addresses mapped to the virtual IP addresses of the
VRRP groups.
Use undo vrrp method to restore the default.

13
By default, the virtual MAC addresses are mapped to the virtual IP addresses of the VRRP groups.
Specify the type of the MAC addresses mapped to the virtual IP address before creating a VRRP group.
Otherwise, you cannot change the type of the MAC address by using this command. .
When VRRP is operating in load balancing mode, a virtual IP address is always mapped to a virtual
MAC address regardless of which type of the MAC addresses to be mapped to the virtual IP address is
specified.
Related commands: display vrrp.
Examples
# Map the virtual IP address of a VRRP group to the real MAC address of the interface.
<Sysname> system-view
[Sysname] vrrp method real-mac
vrrp mode
Syntax
vrrp mode load-balance
undo vrrp mode
View
System view
Default Level
2: System level
Parameters
load-balance: Specifies the load balancing mode.
Description
Use vrrp mode to configure the VRRP working mode.
Use undo vrrp mode to restore the default.
By default, VRRP operates in standard protocol mode.
•When VRRP is operating in load balancing mode, the virtual IP address cannot be the same as the
IP address of any interface in the VRRP group, and the virtual IP address should be mapped to the
virtual MAC address. Otherwise, VRRP cannot operate in load balancing mode.
•When a VRRP group is created, you can still change the VRRP working mode. When you change
the VRRP working mode, all VRRP groups on the access controller operate in the specified mode.
Related commands: display vrrp.
Examples
# Configure VRRP to operate in load balancing mode.
<Sysname> system-view
[Sysname] vrrp mode load-balance

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vrrp un-check ttl
Syntax
vrrp un-check ttl
undo vrrp un-check ttl
View
Interface view
Default level
2: System level
Parameters
None
Description
Use vrrp un-check ttl to disable TTL check on VRRP packets.
Use undo vrrp un-check ttl to enable TTL check on VRRP packets.
By default, TTL check on VRRP packets is enabled.
The master of a VRRP group periodically sends VRRP advertisements to indicate its existence. The VRRP
advertisements are multicast onto the local network segment and not forwarded by a router, and
therefore the packet TTL value will not be changed. When the master of a VRRP group advertises VRRP
packets, it sets the packet TTL to 255. After you configure to check the VRRP packet TTL, when the backups
of the VRRP group receive VRRP packets, they check the packet TTL and drop the VRRP packets whose TTL
is smaller than 255 to prevent attacks from other network segments.
Because devices of different vendors might implement VRRP in a different way, when the device is
interoperating with devices of other vendors, VRRP packet TTL check might result in dropping packets that
should not be dropped. In this case, use the vrrp un-check ttl command to disable TTL check on VRRP
packets.
Examples
# Disable TTL check on VRRP packets.
<Sysname> system-view
[Sysname] interface vlan-interface 2
[Sysname-Vlan-interface2] vrrp un-check ttl
vrrp vrid authentication-mode
Syntax
vrrp vrid virtual-router-id authentication-mode {md5 | simple } key
undo vrrp vrid virtual-router-id authentication-mode
View
Interface view
Default level
2: System level
Parameters