· The interfaces that VRRP involves can only be Layer 3 Ethernet interfaces, VLAN interfaces, Layer 3 aggregate interfaces, and RPR logical interfaces unless otherwise specified.

· VRRP cannot be configured on an interface of an aggregation group.

Common VRRP configuration commands

vrrp mode

Syntax

vrrp mode load-balance

undo vrrp mode

View

System view

Default level

2: System level

Parameters

load-balance: Specifies VRRP to work in load balancing mode.

Description

Use the vrrp mode command to configure the VRRP working mode.

Use the undo vrrp mode command to restore the default.

By default, VRRP works in standard protocol mode.

· When you configure the working mode of VRRP by using this command, both IPv4-based and IPv6-based VRRP groups work in the specified mode.

· When VRRP works 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 work 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 router work in the specified mode.

Related commands: display vrrp and display vrrp ipv6.

Examples

# Configure VRRP to work in load balancing mode.

<Sysname> system-view

[Sysname] vrrp mode load-balance

IPv4-based VRRP configuration commands

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 group(s).

interface interface-type interface-number: Displays VRRP group state information of the specified interface. interface-type interface-number specifies an interface by its type and number.

vrid virtual-router-id: Displays state information of the specified VRRP group. virtual-router-id 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.

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

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

Description

Use the display vrrp command to display the state information of VRRP group(s).

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.

Examples

# When VRRP works 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 Output description (standard protocol mode)

Field	Description
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.
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, including: · None—No authentication. · Simple—Simple text authentication. · MD5—MD5 authentication.
Virtual IP	Virtual IP address of the VRRP group.

# When VRRP works 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

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 Output description (standard protocol mode)

Field	Description
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, including: · UP · DOWN
State	Status of the router in the VRRP group, including: · 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, including: · Yes—The router in the VRRP group works in preemptive mode. · No—The router in the VRRP group works in non preemptive mode.
Delay Time	Preemption delay, in seconds.
Become Master	Time to wait before the router becomes the master. The unit is milliseconds. Only routers in backup mode have such information.
Auth Type	Authentication type, including: · None—No authentication. · Simple—Simple text authentication. · MD5—MD5 authentication.
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 in the state of master.
Master IP	Primary IP address of the interface where the router in the state of master 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. The state of a tracked interface includes: · Up · Down · Removed The state of a track entry includes: · 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 works 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

Table 3 Output description (load balancing mode)

Field	Description
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 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 works 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

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

Forwarder Switchover Track Information:

Track Object : 2 State : Positive

Member IP : 10.1.1.3

Table 4 Output description (load balancing mode)

Field	Description
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, including: · UP · DOWN
State	This field indicates the status of the router in the VRRP group, including: · Master · Backup · Initialize
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, including: · Yes—The router in the VRRP group works in preemptive mode. · No—The router in the VRRP group works in non preemptive mode.
Delay Time	Preemption delay, in seconds.
Become Master	Time to wait before the router becomes the master. The unit is milliseconds. Only routers in backup mode have such information.
Auth Type	Authentication type, including: · 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 works 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. The state of a tracked interface includes: · Up · Down · Removed The state of a track entry includes: · 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.
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: 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	The state of a VF, including: · 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.
Forwarder Switchover Track Information	VF switchover information. The information is displayed only after the vrrp vrid track forwarder-switchover command is executed.
Track Object	Track entry monitored by the VF switchover feature. The information is displayed only after the vrrp vrid track forwarder-switchover command is executed.
State	A track entry has the following states: · Invalid · Negative · Positive · Not existing
Member IP	IP address of the member device. If the status of the monitored track entry turns to negative and the local device has an LVF whose corresponding AVF is on the specified member device, the LVF immediately becomes active.

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 of the specified interface. interface-type interface-number specifies an interface by its type and number.

vrid virtual-router-id: Displays statistics of the specified VRRP group. virtual-router-id 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.

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

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

Description

Use the display vrrp statistics command to display statistics about VRRP group(s).

If you specify both an interface and a VRRP group, only the statistics about the specified VRRP group on the interface are displayed. If you only specify an interface, the statistics about all the VRRP groups on the interface are displayed. If you specify neither, the statistics about all the VRRP groups on the router are displayed.

To clear the VRRP group statistics, use the reset vrrp statistics command.

Related commands: reset vrrp statistics.

Examples

# When VRRP works in standard protocol mode, display the statistics about 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 works in load balancing mode, display the statistics about 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

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 Output description (Standard protocol mode)

Field	Description
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 sent advertisements with the priority of 0
Advertise Sent	Number of advertisements sent
Global statistics	Global statistics about 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 Output description (Load balancing mode)

Field	Description
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
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 about 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

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 of a specified interface. interface-type interface-number specifies an interface by its type and number.

vrid virtual-router-id: Clears VRRP statistics of the specified VRRP group. virtual-router-id specifies a VRRP group by its group number, which ranges from 1 to 255.

Description

Use the reset vrrp statistics command to clear VRRP group statistics.

If you specify both an interface and a VRRP group, the statistics about the specified VRRP group on the specified interface are cleared. If you specify only the interface, the statistics about all the VRRP groups on the interface are cleared. If you specify neither, the statistics about all the VRRP groups on the router are cleared.

Related commands: display vrrp statistics.

Examples

# Clear the statistics about all the VRRP groups on the router.

<Sysname> reset vrrp statistics

vrrp dot1q

Syntax

vrrp dot1q vid vlan-id [ secondary-dot1q secondary-vlan-id ]

undo vrrp dot1q

View

Interface view

Default level

2: System level

Parameters

vid vlan-id: Outer VLAN ID, which ranges from 1 to 4094.

secondary-dot1q secondary-vlan-id: Inner VLAN ID. The secondary-vlan-id argument ranges from 1 to 4094.

Description

Use the vrrp dot1q command to specify a VRRP control VLAN for the subinterface configured with VLAN termination.

Use the undo vrrp dot1q command to restore the default.

By default, no VRRP control VLAN is specified for the subinterface configured with VLAN termination. In other words, the master sends VRRP advertisements within all VLANs whose VLAN packets are configured to be terminated by the subinterface.

If you re-execute the command, the latest configuration overwrites the previous one.

Examples

# Specify the outer VLAN ID and inner VLAN ID for the VRRP control VLAN as 2 and 100 respectively.

<Sysname> system-view

[Sysname] interface gigabitEthernet3/0/1

[Sysname-GigabitEthernet3/0/1] vrrp dot1q vid 2 secondary-dot1q 100

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 the vrrp method command to specify the type of the MAC addresses mapped to the virtual IP addresses of the VRRP groups.

Use the undo vrrp method command to restore the default.

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 works 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 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 the vrrp un-check ttl command to disable TTL check on VRRP packets.

Use the undo vrrp un-check ttl command 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

virtual-router-id: VRRP group number, which ranges from 1 to 255.

md5: Authentication using the MD5 algorithm.

simple: Plain text authentication mode.

key: Authentication key, which is case-sensitive.

· When md5 authentication applies, the authentication key is in MD5 cipher text or in plain text and the length of the key depends on its input format. If the key is input in plain text, its length is 1 to 8 characters, such as 1234567. If the key is input in cipher text, its length must be 24 characters, such as _(TT8F]Y\5SQ=^Q`MAF4<1!!.

· When simple authentication applies, the authentication key is in plain text with a length of 1 to 8 characters.

Description

Use the vrrp vrid authentication-mode command to configure authentication mode and authentication key for a VRRP group to send and receive VRRP packets.

Use the undo vrrp vrid authentication-mode command to restore the default.

By default, authentication is disabled.

Before executing the command, create a VRRP group on an interface and configure the virtual IP address of the VRRP group.

You might configure different authentication modes and authentication keys for the VRRP groups on an interface. However, the members of the same VRRP group must use the same authentication mode and authentication key.

Related commands: display vrrp.

Examples

# Set the authentication mode to simple and authentication key to Sysname for VRRP group 1 on VLAN-interface 2 to send and receive VRRP packets.

<Sysname> system-view

[Sysname] interface vlan-interface 2

[Sysname-Vlan-interface2] vrrp vrid 1 virtual-ip 10.1.1.1

[Sysname-Vlan-interface2] vrrp vrid 1 authentication-mode simple Sysname

vrrp vrid preempt-mode

Syntax

vrrp vrid virtual-router-id preempt-mode [ timer delay delay-value ]

undo vrrp vrid virtual-router-id preempt-mode [ timer delay ]

View

Interface view

Default level

2: System level

Parameters

virtual-router-id: Virtual router ID or VRRP group number, which ranges from 1 to 255.

timer delay delay-value: Sets preemption delay. The delay-value argument ranges from 0 to 255 seconds and defaults to 0 seconds.

Description

Use the vrrp vrid preempt-mode command to enable preemption on the router and configure its preemption delay in the specified VRRP group.

Use the undo vrrp vrid preempt-mode command to disable preemption on the router in the specified VRRP group, that is, specify the router to work in the non-preemptive mode.

Use the undo vrrp vrid preempt-mode timer delay command to restore the default preemption delay, that is, zero seconds.

The default mode is immediate preemption without delay.

To avoid frequent member state changes in a VRRP group and make the backups have enough time to collect information (such as routing information), each backup waits for a period of time (the preemption delay time) after it receives an advertisement with the priority lower than the local priority, then sends VRRP advertisements to start a new master election in the VRRP group and becomes the master.

Before executing the command, create a VRRP group on an interface and configure the virtual IP address of the VRRP group.

Related commands: display vrrp.

Examples

# Enable preemption on the switch in VRRP group 1, and set the preemption delay to five seconds.

<Sysname> system-view

[Sysname] interface vlan-interface 2

[Sysname-Vlan-interface2] vrrp vrid 1 virtual-ip 10.1.1.1

[Sysname-Vlan-interface2] vrrp vrid 1 preempt-mode timer delay 5

vrrp vrid priority

Syntax

vrrp vrid virtual-router-id priority priority-value

undo vrrp vrid virtual-router-id priority

View

Interface view

Default level

2: System level

Parameters

virtual-router-id: VRRP group number, which ranges from 1 to 255.

priority-value: Priority value of the router in the specified VRRP group, which ranges from 1 to 254. A higher number indicates a higher priority.

Description

Use the vrrp vrid priority command to configure the priority of the router in the specified VRRP group.

Use the undo vrrp vrid priority command to restore the default.

By default, the priority of a router in a VRRP group is 100.

· Before executing the command, create a VRRP group on an interface and configure the virtual IP address of the VRRP group.

· The role that a router plays in a VRRP group depends on its priority. A higher priority means that the router is more likely to become the master. Priority 0 is reserved for special use and 255 for the IP address owner.

· If the router is the IP address owner, its priority is always 255. Therefore, it remains as the master so long as it is functioning normally.

Related commands: display vrrp.

Examples

# Set the priority of VRRP group 1 on VLAN-interface 2 to 150.

<Sysname> system-view

[Sysname] interface vlan-interface 2

[Sysname-Vlan-interface2] vrrp vrid 1 virtual-ip 10.1.1.1

[Sysname-Vlan-interface2] vrrp vrid 1 priority 150

vrrp vrid timer advertise

Syntax

vrrp vrid virtual-router-id timer advertise adver-interval

undo vrrp vrid virtual-router-id timer advertise

View

Interface view

Default level

2: System level

Parameters

virtual-router-id: VRRP group number, which ranges from 1 to 255.

adver-interval: Interval at which the master in the specified VRRP group sends VRRP advertisements. It ranges from 1 to 255 seconds.

Description

Use the vrrp vrid timer advertise command to configure the Adver_Timer of the specified VRRP group.

Use the undo vrrp vrid timer advertise command to restore the default.

By default the Adver_Timer is 1 second.

The Adver_Timer controls the interval at which the master sends VRRP packets.

Before executing the command, create a VRRP group on an interface and configure the virtual IP address of the VRRP group.

Routers in the same VRRP group must use the same Adver_Timer setting.

Related commands: display vrrp.

Examples

# Set the master in VRRP group 1 to send VRRP advertisements at intervals of five seconds.

<Sysname> system-view

[Sysname] interface vlan-interface 2

[Sysname-Vlan-interface2] vrrp vrid 1 virtual-ip 10.1.1.1

[Sysname-Vlan-interface2] vrrp vrid 1 timer advertise 5

vrrp vrid track

Syntax

vrrp vrid virtual-router-id track track-entry-number [ forwarder-switchover member-ip ip-address | reduced priority-reduced | switchover ]

undo vrrp vrid virtual-router-id track [ track-entry-number ]

View

Interface view

Default level

2: System level

Parameters

virtual-router-id: Specifies a VRRP group number, which ranges from 1 to 255.

track track-entry-number: Specifies a track entry. The track-entry-number argument ranges from 1 to 1024.

forwarder-switchover member-ip ip-address: Enables the LVF on the router to take over the role of the AVF at the specified IP address immediately after the specified track entry changes to the negative state. You can use the display vrrp verbose command to view the IP addresses of VFs.

reduced priority-reduced: Reduces the priority of the router in the VRRP group by a specific value when the state of the specified track entry changes to the negative state. The priority-reduced argument ranges from 1 to 255.

switchover: Enables the router in backup state to take over as the master immediately after the specified track entry changes to the negative state.

Description

Use the vrrp vrid track command to associate a VRRP group with a track entry and control master switchover or AVF switchover in the VRRP group in response to changes (such as uplink state changes) detected by the track entry.

Use the undo vrrp vrid track command to remove the association between a VRRP group and a track entry. If no track entry is specified, the association between the VRRP group and any track entry is removed.

By default, a VRRP group is not associated with any track entry.

When the associated track entry changes to the negative state, the priority of the router in the VRRP group decreases by a specified value, or the router immediately takes over as the master if it is a backup router, or the LVF on the router immediately takes over the role of the AVF at the specified IP address, depending on your configuration.

If forwarder-switchover member-ip ip-address, reduced priority-reduced, and switchover are not specified, the priority of the router in the VRRP group decreases by 10 when the track entry changes to negative.

When the track entry changes from negative to positive or invalid, the router automatically restores its priority.

IMPORTANT:

You must create the VRRP group and assign a virtual IP address to it before you can associate it with any track entry.

The vrrp vrid track command cannot take effect on an IP address owner. If you have configured the command on an IP address owner, the configuration takes effect after the router changes to be a non IP address owner.

You can create a track entry with the track command before or after you associate it with a VRRP group. For more information about configuring track entries, see High Availability Configuration Guide.

Related commands: display vrrp.

Examples

# Associate VRRP group 1 on VLAN-interface 2 with track entry 1 and decrease the priority of the router in the VRRP group by 50 when the state of track entry 1 changes to negative.

<Sysname> system-view

[Sysname] interface vlan-interface 2

[Sysname-Vlan-interface2] vrrp vrid 1 virtual-ip 10.1.1.1

[Sysname-Vlan-interface2] vrrp vrid 1 track 1 reduced 50

# Associate VRRP group 1 on VLAN-interface 2 with track entry 2 and enable the VF in listening state whose AVF is on the member device with the IP address of 10.1.1.3 to take over as the AVF immediately after the specified track entry changes to the negative state.

[Sysname-Vlan-interface2] vrrp vrid 1 track 2 forwarder-switchover member-ip 10.1.1.3

vrrp vrid track interface

Syntax

vrrp vrid virtual-router-id track interface interface-type interface-number [ reduced priority-reduced ]

undo vrrp vrid virtual-router-id track [ interface interface-type interface-number ]

View

Interface view

Default level

2: System level

Parameters

virtual-router-id: VRRP group number, which ranges from 1 to 255.

interface interface-type interface-number: Specifies an interface to be tracked by its type and number.

reduced priority-reduced: Value by which the priority decrements. priority-reduced ranges from 1 to 255 and defaults to 10.

Description

Use the vrrp vrid track interface command to configure to track the specified interface.

Use the undo vrrp vrid track interface command to disable tracking the specified interface.

By default, no interface is tracked.

When the uplink interface of a router in a VRRP group fails, usually the VRRP group cannot be aware of the uplink interface failure. If the router is the master of the VRRP group, hosts on the LAN are not able to access external networks because of the uplink failure. This problem can be solved through tracking a specified uplink interface. After you configure to monitor the uplink interface, when the uplink interface is down or removed, the priority of the master is automatically decreased by a specified value, allowing a higher priority router in the VRRP group to become the master.

Before executing the command, create a VRRP group on an interface and configure the virtual IP address of the VRRP group.

If you configure an interface to be tracked on a router that is the IP address owner in a VRRP group, the configuration does not take effect. If the router is not the IP address owner in the VRRP group later, the configuration takes effect.

When the status of the tracked interface turns from down or removed to up, the corresponding router automatically restores its priority.

The interface specified in this command can be a Layer 3 Ethernet interface, a VLAN interface, a Layer 3 aggregate interface, a POS interface, an HDLC link bundle interface, or an RPR logical interface.

Related commands: display vrrp.

Examples

# On VLAN-interface 2, set the interface to be tracked as VLAN-interface 1, making the priority of VRRP group 1 on VLAN-interface 2 decrement by 50 when VLAN-interface 1 is down or removed.

<Sysname> system-view

[Sysname] interface vlan-interface 2

[Sysname-Vlan-interface2] vrrp vrid 1 virtual-ip 10.1.1.1

[Sysname-Vlan-interface2] vrrp vrid 1 track interface vlan-interface 1 reduced 50

vrrp vrid virtual-ip

Syntax

vrrp vrid virtual-router-id virtual-ip virtual-address

undo vrrp vrid virtual-router-id [ virtual-ip virtual-address ]

View

Interface view

Default level

2: System level

Parameters

virtual-router-id: VRRP group number, which ranges from 1 to 255.

virtual-address: Virtual IP address.

Description

Use the vrrp vrid virtual-ip command to create a VRRP group, and configure a virtual IP address for it, or, add another virtual IP address for an existing VRRP group.

Use the undo vrrp vrid virtual-ip command to remove an existing VRRP group or the virtual IP address of the VRRP group.

By default, no VRRP group is created.

The system removes a VRRP group after you delete all the virtual IP addresses in it.

The virtual IP address of a VRRP group cannot be 0.0.0.0, 255.255.255.255, loopback address, non A/B/C address and other illegal IP addresses such as 0.0.0.1.

A VRRP group operates normally only when the configured virtual IP address and the interface IP address belong to the same segment and are legal host addresses. If they are not in the same network segment, or the configured IP address is the network address or network broadcast address of the network segment to which the interface IP address belongs, though you can perform the configuration successfully, the state of the VRRP group is always Initialize, which means VRRP does not take effect .

Related commands: display vrrp.

Examples

# Create VRRP group 1 and set its virtual IP address to 10.10.10.10.

<Sysname> system-view

[Sysname] interface vlan-interface 2

[Sysname-Vlan-interface2] vrrp vrid 1 virtual-ip 10.10.10.10

# Add virtual IP address 10.10.10.11 to VRRP group 1.

[Sysname-Vlan-interface2] vrrp vrid 1 virtual-ip 10.10.10.11

vrrp vrid weight track

Syntax

vrrp vrid virtual-router-id weight track track-entry-number [ reduced weight-reduced ]

undo vrrp vrid virtual-router-id weight track [ track-entry-number ]

View

Interface view

Default level

2: System level

Parameters

virtual-router-id: VRRP group number, which ranges from 1 to 255.

track track-entry-number: Specifies a track entry to be monitored by its number, in the range of 1 to 1024.

reduced weight-reduced: Specifies the value by which the weight decreases, in the range of 1 to 255. The default setting is 30.

Description

Use the vrrp vrid weight track command to specify the track entry to be monitored by VFs when VRRP works in load balancing mode. If the status of the monitored track entry changes to negative, the weights of all VFs in the VRRP group to which the current router belongs decrease by a specified value.

Use the undo vrrp vrid weight track command to remove the specified track entry.

By default, no track entry is specified to be monitored.

· The command is effective only when VRRP works in load balancing mode.

· Before executing the command, create a VRRP group on an interface and configure the virtual IP address of the VRRP group.

· When the status of the monitored track entry turns from negative to positive or invalid, the corresponding VFs automatically restore their weights.

· The track entry specified in this command can be nonexistent. You can use the vrrp vrid weight track command to specify a track entry, and then create the track entry using the track command.

· By default, the weight of a VF is 255, and the lower limit of failure is 10. When the weight of a VF owner is no less than the lower limit of failure, the priority of the VF owner is always 255. To enable other VFs to take over the role of the VF owner as the AVF when the uplink interface fails, you must set a value larger than 245 for the reduced weight-reduced option.

NOTE:

For more information about track entries, see High Availability Configuration Guide.

Related commands: display vrrp.

Examples

# Configure to monitor track entry 1, making the weights of VFs belonging to VRRP group 1 on VLAN-interface 2 decrease by 50 when track entry 1 turns to negative.

<Sysname> system-view

[Sysname] interface vlan-interface 2

[Sysname-Vlan-interface2] vrrp vrid 1 virtual-ip 10.1.1.1

[Sysname-Vlan-interface2] vrrp vrid 1 weight track 1 reduced 50

IPv6-based VRRP configuration commands

display vrrp ipv6

Syntax

display vrrp ipv6 [ 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 group(s).

interface interface-type interface-number: Displays VRRP group state information of the specified interface. interface-type interface-number specifies an interface by its type and number.

vrid virtual-router-id: Displays state information of the specified VRRP group. virtual-router-id 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.

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

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

Description

Use the display vrrp ipv6 command to display the state information of VRRP group(s) for IPv6.

If you do not specify the verbose keyword, only the brief state information of VRRP group(s) is displayed.

Examples

# When VRRP works in standard protocol mode, display brief information about all VRRP groups on the router.

<Sysname> display vrrp ipv6

IPv6 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 140 100 Simple FE80::1

Table 7 Output description (standard protocol mode)

Field	Description
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.
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 centiseconds.
Auth Type	Authentication type, including: · None—No authentication. · Simple—Simple text authentication.
Virtual IP	Virtual IPv6 addresses of the VRRP group.

# When VRRP works in standard protocol mode, display detailed information about all VRRP groups on the router.

<Sysname> display vrrp ipv6 verbose

IPv6 Standby Information:

Run Mode : Standard

Run Method : Virtual MAC

Total number of virtual routers : 1

Interface Vlan-interface2

VRID : 1 Adver Timer : 100

Admin Status : Up State : Master

Config Pri : 150 Running Pri : 140

Preempt Mode : Yes Delay Time : 10

Auth Type : Simple Key : hello

Virtual IP : FE80::1

Virtual MAC : 0000-5e00-0201

Master IP : FE80::2

VRRP Track Information:

Track Interface: Vlan3 State : Down Pri Reduced : 10

Track Object : 1 State : Positive Pri Reduced : 50

Table 8 Output description (standard protocol mode)

Field	Description
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 centiseconds.
Admin Status	Administrative state, including: · UP · DOWN
State	Status of the router in the VRRP group, including: · Master · Backup · Initialize
Config Pri	Configured priority of the router, or in other words, the priority value specified by using the vrrp ipv6 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, including: · Yes—The router in the VRRP group works in preemptive mode. · No—The router in the VRRP group works in non preemptive mode.
Delay Time	Preemption delay, in seconds.
Become Master	Time to wait before the router becomes the master. The unit is milliseconds. Only routers in backup mode have such information.
Auth Type	Authentication type, including: · None—No authentication. · Simple—Simple text authentication.
Key	Authentication key.
Virtual IP	Virtual IPv6 addresses of the VRRP group.
Virtual MAC	Virtual MAC address that corresponds to the virtual IPv6 address of the VRRP group. It is displayed only when the router is in the state of master.
Master IP	Primary IP address of the interface where the router in the state of master resides.
VRRP Track Information	Information of the tracked interface or track entry. It is displayed only when the vrrp ipv6 vrid track or vrrp ipv6 vrid track interface command is executed.
Track Interface	The interface to be tracked. It is displayed only when the vrrp ipv6 vrid track interface command is executed.
Track Object	The track entry to be tracked. It is displayed only when the vrrp ipv6 vrid track command is executed.
State	State of the tracked interface or track entry. The state of a tracked interface includes: · Up · Down The state of a track entry includes: · 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 ipv6 vrid track interface or vrrp ipv6 vrid track command is executed.
Switchover	Switchover mode. If the status of the monitored track entry turns to negative, the backup immediately switches to the master.

# When VRRP works in load balancing mode, display brief information about all VRRP groups on the router.

<Sysname> display vrrp ipv6

IPv6 Standby Information:

Run Mode : Load Balance

Run Method : Virtual MAC

Total number of virtual routers : 2

Interface VRID State Run Address Active

Pri

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

Vlan2 1 Master 140 FE80::1 Local

----- VF 1 Active 255 000f-e2ff-4011 Local

Table 9 Output description (load balancing mode)

Field	Description
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 number or ID of the VF VF number.
State	· If VRID is number, this field indicates the status of the router in the VRRP group, including Master, Backup, and Initialize. · If VRID is VF number, this field indicates the status of the VF in the VRRP group, including Active, Listening, and Initialize.
Run Pri	· If VRID is number, this field indicates the running priority of the router, that is, 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. · If VRID is VF number, this field indicates the running priority of the VF. With VF tracking configured, when the state of the monitored track entry changes, the priority of the VF changes.
Address	· If VRID is number, this field indicates the virtual IP address of the VRRP group. · If VRID is VF number, this field indicates the virtual MAC address of the VF.
Active	· If 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 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 works in load balancing mode, display detailed information about all VRRP groups on the router.

<Sysname> display vrrp ipv6 verbose

IPv6 Standby Information:

Run Mode : Load Balance

Run Method : Virtual MAC

Total number of virtual routers : 1

Interface Vlan-interface2

VRID : 1 Adver Timer : 100

Admin Status : Up State : Master

Config Pri : 120 Running Pri : 110

Preempt Mode : Yes Delay Time : 5

Auth Type : None

Virtual IP : FE80::10

Member IP List : FE80::1 (Local, Master)

FE80::2 (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-4011 (Owner)

Owner ID : 0000-5e01-1101

Priority : 255

Active : local

Forwarder 02

State : Listening

Virtual MAC : 000f-e2ff-4012 (Learnt)

Owner ID : 0000-5e01-1103

Priority : 127

Active : FE80::2

Forwarder Weight Track Information:

Track Object : 1 State : Positive Weight Reduced : 250

Forwarder Switchover Track Information:

Track Object : 2 State : Positive

Member IP : FE80::2

Table 10 Output description (load balancing mode)

Field	Description
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.
State	This field indicates the status of the router in the VRRP group, including: · Master · Backup · Initialize
Adver Timer	VRRP advertisement interval, in centiseconds.
Admin Status	Administrative state, including: · UP · DOWN
State	This field indicates the status of the router in the VRRP group, including: · Master · Backup · Initialize
Config Pri	Configured priority of the router, or in other words, the priority value specified by using the vrrp ipv6 vrid priority command.
Running Pri	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.
Preempt Mode	Preemptive mode, including: · Yes—The router in the VRRP group works in preemptive mode. · No—The router in the VRRP group works in non preemptive mode.
Delay Time	Preemption delay, in seconds.
Become Master	Time to wait before the router becomes the master. The unit is milliseconds. Only routers in backup mode have such information.
Auth Type	Authentication type, including: · None—No authentication. · Simple—Simple text authentication.
Key	Authentication key.
Virtual IP	Virtual IP addresses 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 works 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 object.
Track Interface	The interface to be tracked. It is displayed only when the vrrp ipv6 vrid track interface command is executed.
Track Object	The track entry to be tracked. It is displayed only when the vrrp ipv6 vrid track command is executed.
State	State of the tracked interface or track entry. The state of a tracked interface includes: · Up · Down · Removed The state of a track entry includes: · 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 ipv6 vrid track interface command or the vrrp ipv6 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.
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: 255.
Running Weight	Running weight of the VF, or in other words, the current weight of the VF. With VF tracking configured, if the state of the monitored track entry changes, the weight of the VF changes.
Forwarder 01	Information about VF 01.
State	The state of a VF, including: · 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 ipv6 vrid weight track command is executed.
Track Object	Weight track entry. It is displayed only when the vrrp ipv6 vrid weight track command is executed.
State	The state of a track entry includes: · 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 ipv6 vrid weight track command is executed.
Forwarder Switchover Track Information	VF switchover information The information is displayed only after the vrrp ipv6 vrid track forwarder-switchover command is executed.
Track Object	Track entry monitored by the VF switchover feature The information is displayed only after the vrrp ipv6 vrid track forwarder-switchover command is executed.
State	The state of a track entry includes: · Invalid · Negative · Positive · Not existing
Member IP	IP address of the member device. If the status of the monitored track entry turns to negative and the local device has an LVF whose corresponding AVF is on the specified member device, the LVF immediately becomes active.

display vrrp ipv6 statistics

Syntax

display vrrp ipv6 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 information of the specified interface. interface-type interface-number specifies an interface by its type and number.

vrid virtual-router-id: Displays statistics information of the specified VRRP group. virtual-router-id 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.

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

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

Description

Use the display vrrp ipv6 statistics command to display statistics about VRRP group(s) for IPv6.

To clear the VRRP group statistics, use the reset vrrp ipv6 statistics command.

Related commands: reset vrrp ipv6 statistics.

Examples

# When VRRP works in standard protocol mode, display the statistics about all VRRP groups.

<Sysname> display vrrp ipv6 statistics

Interface : Vlan-interface2

VRID : 2

CheckSum Errors : 0 Version Errors : 0

Invalid Type Pkts Rcvd : 0 Advertisement Interval Errors : 0

Hop Limit Errors : 0 Auth Failures : 0

Invalid Auth Type : 0 Auth Type Mismatch : 0

Packet Length Errors : 0 Address List Errors : 0

Become Master : 0 Priority Zero Pkts Rcvd : 0

Adver Rcvd : 0 Priority Zero Pkts Sent : 0

Adver Sent : 0

Global statistics

CheckSum Errors : 0

Version Errors : 0

VRID Errors : 0

# When VRRP works in load balancing mode, display the statistics about all VRRP groups.

<Sysname> display vrrp ipv6 statistics

Interface : Vlan-interface2

VRID : 2

CheckSum Errors : 0 Version Errors : 0

Invalid Type Pkts Rcvd : 0 Advertisement Interval Errors : 0

Hop Limit Errors : 0 Auth Failures : 0

Invalid Auth Type : 0 Auth Type Mismatch : 0

Packet Length Errors : 0 Address List Errors : 0

Become Master : 0 Redirect Timer Expires : 0

Become AVF : 0 Time-out Timer Expires : 0

Adver Rcvd : 0 Request Rcvd : 0

Adver Sent : 0 Request Sent : 0

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 : 0 VF Priority Zero Pkts Sent : 0

Status Option Errors : 0

Global statistics

CheckSum Errors : 0

Version Errors : 0

VRID Errors : 0

Table 11 Output description (standard protocol mode)

Field	Description
Interface	Interface to which the VRRP group belongs
VRID	ID 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
Hop Limit Errors	Number of packets with hop limit 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 about 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 12 Output description (load balancing mode)

Field	Description
Interface	Interface to which the VRRP group belongs
VRID	ID 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
Hop Limit Errors	Number of packets with hop limit 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 about 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

reset vrrp ipv6 statistics

Syntax

reset vrrp ipv6 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 of a specific interface. interface-type interface-number specifies an interface by its type and number.

vrid virtual-router-id: Clears VRRP statistics of the specified VRRP group. virtual-router-id specifies a VRRP group by its group number, which ranges from 1 to 255.

Description

Use the reset vrrp ipv6 statistics command to clear VRRP group statistics.

If you specify both an interface and a VRRP group, the statistics about the specified VRRP group on the specified interface are cleared. If you specify only an interface, the statistics about all the VRRP groups on the interface are cleared. If you specify neither, the statistics about all the VRRP groups on the router are cleared.

Related commands: display vrrp ipv6 statistics.

Examples

# Clear the statistics about all the VRRP groups on the router.

<Sysname> reset vrrp ipv6 statistics

vrrp ipv6 method

Syntax

vrrp ipv6 method { real-mac | virtual-mac }

undo vrrp ipv6 method

View

System view

Default level

2: System level

Parameters

real-mac: Maps the real MAC address of the interface to the virtual IPv6 addresses of VRRP groups.

virtual-mac: Maps the virtual MAC addresses to the virtual IPv6 addresses of VRRP groups.

Description

Use the vrrp ipv6 method command to specify the type of the MAC addresses mapped to the virtual IPv6 addresses of the VRRP groups.

Use the undo vrrp ipv6 method command to restore the default.

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 IPv6 addresses before creating a VRRP group. Otherwise, you cannot change the type of the MAC address by using this command.

When VRRP works in load balancing mode, a virtual IPv6 address is always mapped to a virtual MAC address regardless of which type of the MAC addresses to be mapped to the virtual IP addresses is specified.

Related commands: display vrrp ipv6.

Examples

# Map the virtual IPv6 address of the current VRRP group to the real MAC address of the interface.

<Sysname> system-view

[Sysname] vrrp ipv6 method real-mac

vrrp ipv6 vrid authentication-mode

Syntax

vrrp ipv6 vrid virtual-router-id authentication-mode simple key

undo vrrp ipv6 vrid virtual-router-id authentication-mode

View

Interface view

Default level

2: System level

Parameters

virtual-router-id: VRRP group number, which ranges from 1 to 255.

simple: Sets the authentication mode to plain text authentication.

key: Authentication key of 1 to 8 case-sensitive characters in plain text.

Description

Use the vrrp ipv6 vrid authentication-mode command to configure authentication mode and authentication key for the VRRP groups to send and receive VRRP packets.

Use the undo vrrp ipv6 vrid authentication-mode command to restore the default.

By default, authentication is disabled.

Before executing the command, create a VRRP group on an interface and configure the virtual IP address of the VRRP group.

You might configure different authentication types and authentication keys for the VRRP groups on an interface. However, the members of the same VRRP group must use the same authentication mode and authentication key.

Related commands: display vrrp ipv6.

Examples

# Set the authentication mode to simple and authentication key to test for VRRP group 10 on VLAN-interface 2 to send and receive VRRP packets.

<Sysname> system-view

[Sysname] interface vlan-interface 2

[Sysname-Vlan-interface2] vrrp ipv6 vrid 10 virtual-ip fe80::2 link-local

[Sysname-Vlan-interface2] vrrp ipv6 vrid 10 authentication-mode simple test

vrrp ipv6 vrid preempt-mode

Syntax

vrrp ipv6 vrid virtual-router-id preempt-mode [ timer delay delay-value ]

undo vrrp ipv6 vrid virtual-router-id preempt-mode [ timer delay ]

View

Interface view

Default level

2: System level

Parameters

virtual-router-id: Virtual router ID or VRRP group number, which ranges from 1 to 255.

timer delay delay-value: Sets preemption delay. The delay-value argument ranges from 0 to 255 seconds and defaults to 0 seconds.

Description

Use the vrrp ipv6 vrid preempt-mode command to configure preemption on the router and configure its preemption delay in the specified VRRP group.

Use the undo vrrp ipv6 vrid preempt-mode command to disable preemption on the router in the specified VRRP group, that is, specify the router to work in the non-preemptive mode.

Use the undo vrrp ipv6 vrid preempt-mode timer delay command to restore the default preemption delay, or, 0 seconds.

The default mode is immediate preemption without delay.

If you set the router in the VRRP group to work in non-preemptive mode, the delay period automatically changes to zero seconds.

Before executing the command, create a VRRP group on an interface and configure the virtual IPv6 address of the VRRP group.

Related commands: display vrrp ipv6.

Examples

# Enable preemption on the switch in VRRP group 80 and set the preemption delay to five seconds.

<Sysname> system-view

[Sysname] interface vlan-interface 2

[Sysname-Vlan-interface2] vrrp ipv6 vrid 10 virtual-ip fe80::2 link-local

[Sysname-Vlan-interface2] vrrp ipv6 vrid 10 preempt-mode timer delay 5

vrrp ipv6 vrid priority

Syntax

vrrp ipv6 vrid virtual-router-id priority priority-value

undo vrrp ipv6 vrid virtual-router-id priority

View

Interface view

Default level

2: System level

Parameters

virtual-router-id: VRRP group number, which ranges from 1 to 255.

priority-value: Priority value of the router in the specified VRRP group, which ranges from 1 to 254. A higher number indicates a higher priority.

Description

Use the vrrp ipv6 vrid priority command to configure the priority of the router in the specified VRRP group.

Use the undo vrrp ipv6 vrid priority command to restore the default.

By default, the priority of a router in a VRRP group is 100.

Before executing the command, create a VRRP group on an interface and configure the virtual IPv6 address of the VRRP group.

The role that a router plays in a VRRP group depends on its priority. A higher priority means that the router is more likely to become the master. Priority 0 is reserved for special use and 255 for the IP address owner.

If the router is the IP address owner, its priority is always 255. Therefore, it remains as the master as long as it is functioning normally.

Related commands: display vrrp ipv6.

Examples

# Set the priority of VRRP group 1 on VLAN-interface 2 to 150.

<Sysname> system-view

[Sysname] interface vlan-interface 2

[Sysname-Vlan-interface2] vrrp ipv6 vrid 1 virtual-ip fe80::2 link-local

[Sysname-Vlan-interface2] vrrp ipv6 vrid 1 priority 150

vrrp ipv6 vrid timer advertise

Syntax

vrrp ipv6 vrid virtual-router-id timer advertise adver-interval

undo vrrp ipv6 vrid virtual-router-id timer advertise

View

Interface view

Default level

2: System level

Parameters

virtual-router-id: VRRP group number, which ranges from 1 to 255.

adver-interval: Interval at which the master in the specified VRRP group sends VRRP advertisements. It ranges from 100 to 4095 centiseconds.

Description

Use the vrrp ipv6 vrid timer advertise command to configure the Adver_Timer of the specified VRRP group.

Use the undo vrrp ipv6 vrid timer advertise command to restore the default.

By default the Adver_Timer is 100 centiseconds.

The Adver_Timer controls the interval at which the master sends VRRP packets.

Before executing the command, create a VRRP group on an interface and configure the virtual IPv6 address of the VRRP group.

Routers in the same VRRP group must use the same Adver_Timer setting.

Related commands: display vrrp ipv6.

Examples

# Set the master in VRRP group 1 to send VRRP advertisements at intervals of 500 centiseconds.

<Sysname> system-view

[Sysname] interface vlan-interface 2

[Sysname-Vlan-interface2] vrrp ipv6 vrid 1 virtual-ip fe80::2 link-local

[Sysname-Vlan-interface2] vrrp ipv6 vrid 1 timer advertise 500

vrrp ipv6 vrid track

Syntax

vrrp ipv6 vrid virtual-router-id track track-entry-number [ forwarder-switchover member-ip ipv6-address | reduced priority-reduced | switchover ]

undo vrrp ipv6 vrid virtual-router-id track [ track-entry-number ]

View

Interface view

Default level

2: System level

Parameters

virtual-router-id: Specifies a VRRP group number, which ranges from 1 to 255.

track track-entry-number: Specifies a track entry. The track-entry-number argument ranges from 1 to 1024.

forwarder-switchover member-ip ipv6-address: Enables the LVF on the router to take over the role of the AVF at the specified IPv6 address immediately after the specified track entry changes to the negative state. You can use the display vrrp verbose command to view the IPv6 addresses of VFs.

switchover: Enables the router in backup state to take over as the master immediately after the specified track entry changes to the negative state.

Description

Use the vrrp ipv6 vrid track command to associate an IPv6 VRRP group with a track entry and control master switchover or AVF switchover in the VRRP group in response to changes (such as uplink state changes) detected by the track entry.

Use the undo ipv6 vrrp vrid track command to remove the association between an IPv6 VRRP group and a track entry. If no track entry is specified, the association between the VRRP group and any track entry is removed.

By default, an IPv6 VRRP group is not associated with any track entry.

If forwarder-switchover member-ip ipv6-address, reduced priority-reduced, and switchover are not specified, the priority of the router in the VRRP group decreases by 10 when the track entry changes to negative.

When the track entry changes from negative to positive or invalid, the router automatically restores its priority.

IMPORTANT:

You must create the VRRP group and assign a virtual IP address to it before you can associate it with any track entry.

The vrrp ipv6 vrid track command cannot take effect on an IP address owner. If you have configured the command on an IP address owner, the configuration takes effect after the router changes to be a non IP address owner.

You can create a track entry with the track command before or after you associate it with an IPv6 VRRP group. For more information about configuring track entries, see High Availability Configuration Guide.

Related commands: display vrrp ipv6.

Examples

# Associate IPv6 VRRP group 1 on VLAN-interface 2 with track entry 1 and decrease the priority of the router in the VRRP group by 50 when the state of track entry 1 changes to negative.

<Sysname> system-view

[Sysname] interface vlan-interface 2

[Sysname-Vlan-interface2] vrrp ipv6 vrid 1 virtual-ip fe80::2 link-local

[Sysname-Vlan-interface2] vrrp ipv6 vrid 1 track 1 reduced 50

# Associate VRRP group 1 on VLAN-interface 2 with track entry 2 and enable the VF in listening state whose AVF is on the member device with the IP address of FE80::10 to take over as the AVF immediately after the specified track entry changes to the negative state.

[Sysname-Vlan-interface2] vrrp ipv6 vrid 1 track 2 forwarder-switchover member-ip fe80::10

vrrp ipv6 vrid track interface

Syntax

vrrp ipv6 vrid virtual-router-id track interface interface-type interface-number [ reduced priority-reduced ]

undo vrrp ipv6 vrid virtual-router-id track [ interface interface-type interface-number ]

View

Interface view

Default level

2: System level

Parameters

virtual-router-id: VRRP group number, which ranges from 1 to 255.

interface interface-type interface-number: Specifies an interface by its type and number.

reduced priority-reduced: Value by which the priority decrements. priority-reduced ranges from 1 to 255 and defaults to 10.

Description

Use the vrrp ipv6 vrid track interface command to configure to track the specified interface.

Use the undo vrrp ipv6 vrid track interface command to disable tracking the specified interface.

By default, no interface is being tracked.

When the uplink interface of a router in a VRRP group fails, usually the VRRP group cannot be aware of the uplink interface failure. If the router is the master of the VRRP group, hosts on the LAN are not able to access external networks because of the uplink failure. This problem can be solved by the tracking a specified uplink interface. When the uplink interface is down or removed, the priority of the master is automatically decreased by a specified value, allowing a higher priority router in the VRRP group to become the master.

Before executing the command, create a VRRP group on an interface and configure the virtual IPv6 address of the VRRP group.

When the status of the tracked interface turns from down or removed to up, the corresponding router restores its priority automatically.

Related commands: display vrrp ipv6.

Examples

# On VLAN-interface 2, set the interface to be tracked to VLAN-interface 1, making the priority of VRRP group 1 on VLAN-interface 2 decrement by 50 when VLAN-interface 1 is down or removed.

<Sysname> system-view

[Sysname] interface vlan-interface 2

[Sysname-Vlan-interface2] vrrp ipv6 vrid 1 virtual-ip fe80::2 link-local

[Sysname-Vlan-interface2] vrrp ipv6 vrid 1 track interface vlan-interface 1 reduced 50

vrrp ipv6 vrid virtual-ip

Syntax

vrrp ipv6 vrid virtual-router-id virtual-ip virtual-address [ link-local ]

undo vrrp ipv6 vrid virtual-router-id [ virtual-ip virtual-address [ link-local ] ]

View

Interface view

Default level

2: System level

Parameters

virtual-router-id: VRRP group number, which ranges from 1 to 255.

virtual-address: Virtual IPv6 address.

link-local: Indicates that the virtual IPv6 address of the VRRP group is a link local address.

Description

Use the vrrp ipv6 vrid virtual-ip command to create a VRRP group, and configure a virtual IPv6 address for it, or, add another virtual IPv6 address for an existing VRRP group.

Use the undo vrrp ipv6 vrid virtual-ip command to remove an existing VRRP group or the virtual IPv6 address of the VRRP group.

By default, no VRRP group is created.

The first virtual IPv6 address assigned to a VRRP group must be a link local address and only one such address is allowed in a VRRP group.

After you remove all virtual IPv6 addresses, the VRRP group is automatically removed. The first address assigned to the group must be removed the last.

Related commands: display vrrp ipv6.

Examples

# Create VRRP group 1, and configure its virtual IPv6 address as fe80::10.

<Sysname> system-view

[Sysname] interface vlan-interface 2

[Sysname-Vlan-interface2] vrrp ipv6 vrid 1 virtual-ip fe80::10 link-local

# Configure the virtual IPv6 address of VRRP group 1 as 1::10.

[Sysname-Vlan-interface2] vrrp ipv6 vrid 1 virtual-ip 1::10

vrrp ipv6 vrid weight track

Syntax

vrrp ipv6 vrid virtual-router-id weight track track-entry-number [ reduced weight-reduced ]

undo vrrp ipv6 vrid virtual-router-id weight track [ track-entry-number ]

View

Interface view

Default level

2: System level

Parameters

virtual-router-id: VRRP group number, which ranges from 1 to 255.

track track-entry-number: Specifies a track entry to be monitored by its number, in the range of 1 to 1024.

reduced weight-reduced: Specifies the value by which the weight decreases, in the range of 1 to 255. The default setting is 30.

Description

Use the vrrp ipv6 vrid weight track command to specify the track entry to be monitored by VFs when VRRP works in the load balancing mode. If the status of the monitored track entry changes to negative the weights of the all VFs in the VRRP group to which the current router belongs decrease by a specified value.

Use the undo ipv6 vrrp vrid weight track command to cancel the specified track entry.

By default, no track entry is specified to be monitored.

The command is effective only when VRRP works in load balancing mode.

Before executing the command, create a VRRP group on an interface and configure the virtual IPv6 address of the VRRP group.

When the status of the monitored track entry turns from negative to positive or invalid, the corresponding VFs automatically restore their weights.

The track entry specified in this command can be nonexistent. You can use the vrrp ipv6 vrid weight track command to specify a track entry, and then create the track entry with the track command.

By default, the weight of a VF is 255, and its lower limit of failure is 10.

If the weight of a VF owner is higher than or equal to the lower limit of failure, the priority of the VF owner is always 255 and does not change with the weight value. Therefore, when an uplink fails, another VF takes over the VF owner's work and becomes the AVF only when the weight of the VF owner decreases by a properly specified value and becomes lower than the lower limit of failure, which means the weight of the VF owner decreases by more than 245.

NOTE:

For more information about track entries, see High Availability Configuration Guide.

Related commands: display vrrp ipv6.

Examples

# Configure to monitor track entry 1, making the weights of VFs that belong to VRRP group 1 on VLAN-interface 2 decrease by 50 when track entry 1 turns to negative.

<Sysname> system-view

[Sysname] interface vlan-interface 2

[Sysname-Vlan-interface2] vrrp ipv6 vrid 1 virtual-ip fe80::2 link-local

[Sysname-Vlan-interface2] vrrp ipv6 vrid 1 weight track 1 reduced 50

12-High Availability Command Reference

VRRP configuration commands

IPv4-based VRRP configuration commands

vrrp dot1q

vrrp un-check ttl

vrrp vrid authentication-mode

vrrp vrid priority

vrrp vrid timer advertise

vrrp vrid track

vrrp vrid track interface

vrrp vrid virtual-ip

IPv6-based VRRP configuration commands

vrrp ipv6 vrid preempt-mode

vrrp ipv6 vrid timer advertise

vrrp ipv6 vrid track interface

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