· If both an interface and an IPv4 VRRP group are specified, this command displays the states of the specified IPv4 VRRP group on the specified interface.

Examples

# Display brief information about all IPv4 VRRP groups on the device when VRRP operates in standard mode.

<Sysname> display vrrp

IPv4 Virtual Router Information:

Running Mode : Standard

Total number of virtual routers : 1

Interface VRID State Running Adver Auth Virtual

Pri Timer Type IP

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

Vlan1 1 Master 150 100 Simple 1.1.1.1

Table 1 Command output (in standard mode)

Field	Description
Running Mode	VRRP operating mode (standard mode).
Total number of virtual routers	Total number of VRRP groups.
Interface	Interface where the VRRP group is configured.
VRID	Virtual router ID (VRRP group number).
State	Status of the router in the VRRP group: · Master. · Backup. · Initialize. · Inactive.
Running Pri	Current priority of the router. When a track entry is associated with a VRRP group on the router, the router's priority changes when the track entry's status changes.
Adver Timer	VRRP advertisement sending interval in centiseconds.
Auth Type	Authentication type: · None—No authentication. · Simple—Simple text authentication. · MD5—MD5 authentication.
Virtual IP	Virtual IP address of the VRRP group.

# Display detailed information about all IPv4 VRRP groups on the device when VRRP operates in standard mode.

<Sysname> display vrrp verbose

IPv4 Virtual Router Information:

Running Mode : Standard

Total number of virtual routers : 2

Interface Vlan-interface2

VRID : 1 Adver Timer : 100

Admin Status : Up State : Master

Config Pri : 150 Running Pri : 150

Preempt Mode : Yes Delay Time : 5

Auth Type : Simple Key : ******

Virtual IP : 1.1.1.1

Virtual MAC : 0000-5e00-0101

Master IP : 1.1.1.2

VRRP Track Information:

Track Object : 1 State : Positive Pri Reduced : 50

Interface Vlan-interface2

VRID : 11 Adver Timer : 100

Admin Status : Up State : Backup

Config Pri : 80 Running Pri : 80

Preempt Mode : Yes Delay Time : 0

Become Master : 2370ms left

Auth Type : None

Virtual IP : 1.1.1.11

Virtual MAC : 0000-5e00-010b

Master IP : 1.1.1.12

Table 2 Command output (in standard mode)

Field	Description
Running Mode	VRRP operating mode (standard mode).
Total number of virtual routers	Total number of VRRP groups.
Interface	Interface where the VRRP group is configured.
VRID	Virtual router ID (VRRP group number).
Adver Timer	VRRP advertisement sending interval in centiseconds.
Admin Status	Administrative status: up or down.
State	Status of the router in the VRRP group: · Master. · Backup. · Initialize. · Inactive.
Config Pri	Configured priority of the router, which is configured through the vrrp vrid priority command.
Running Pri	Current priority of the router. When a track entry is associated with a VRRP group on the router, the router's priority changes when the track entry's status changes.
Preempt Mode	Preemptive mode: · Yes. · No.
Delay Time	Preemption delay time in centiseconds.
Become Master	Time, in milliseconds, that a backup router has to wait before it becomes the master.
Auth Type	Authentication type: · None—No authentication. · Simple—Simple text authentication. · MD5—MD5 authentication.
Key	Authentication key, which is not displayed if no authentication is required.
Virtual IP	Virtual IP address of the VRRP group.
Virtual MAC	Virtual MAC address of the VRRP group's virtual IP address, which is displayed when the router is the master.
Master IP	Primary IP address of the interface where the master resides.
VRRP Track Information	Track entry information. This field is displayed only after you have configured the vrrp vrid track command.
Track Object	Track entry which is associated with the VRRP group.
State	Track entry state: · Negative. · Positive. · NotReady.
Pri Reduced	Value by which the priority decreases when the status of the associated track entry becomes negative.
Switchover	Switchover mode. When the status of the associated track entry becomes negative, the backup immediately becomes the master.

# Display brief information about all IPv4 VRRP groups on the device when VRRP operates in load balancing mode.

<Sysname> display vrrp

IPv4 Virtual Router Information:

Running Mode : Load Balance

Total number of virtual routers : 1

Interface VRID State Running Address Active

Pri

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

Vlan1 1 Master 150 1.1.1.1 Local

----- VF 1 Active 255 000f-e2ff-0011 Local

Table 3 Command output (in load balancing mode)

Field	Description
Running Mode	VRRP operating mode (load balancing mode).
Total number of virtual routers	Total number of VRRP groups.
Interface	Interface where the VRRP group is configured.
VRID	Virtual router ID (VRRP group number) or virtual forwarder (VF) ID.
State	· For a VRRP group (when the VRID is a virtual router ID), this field indicates the state of the router in the VRRP group, including Master, Backup, Initialize, and Inactive. · For a VF (when the VRID is a VF ID), this field indicates the state of the VF in the VRRP group, including Active, Listening, and Initialize.
Running Pri	· For a VRRP group (when the VRID is a virtual router ID), this field indicates the running priority of the router. When a track entry is associated with a VRRP group on the router, the router's priority changes when the track entry's status changes. · For a VF (when the VRID is a VF ID), this field indicates the running priority of the VF. When a track entry is associated with a VF, the priority of the VF changes if the state of the monitored track entry changes.
Address	· For a VRRP group (when the VRID is a virtual router ID), this field indicates the virtual IP address of the VRRP group. · For a VF (when the VRID is a VF ID), this field indicates the virtual MAC address of the VF.
Active	· For a VRRP group (when the VRID is a virtual router ID), this field indicates the IP address of the interface where the master resides. If the current router is the master, local is displayed. · For a VF (when the VRID is a VF ID), this field indicates the IP address of the interface where the active virtual forwarder (AVF) resides. If the current VF is the AVF, local is displayed.

# Display detailed information about all IPv4 VRRP groups on the device when VRRP operates in load balancing mode.

<Sysname> display vrrp verbose

IPv4 Virtual Router Information:

Running Mode : Load Balance

Total number of virtual routers : 2

Interface Vlan-interface

VRID : 1 Adver Timer : 100

Admin Status : Up State : Master

Config Pri : 150 Running Pri : 150

Preempt Mode : Yes Delay Time : 5

Auth Type : None

Virtual IP : 10.1.1.1

10.1.1.2

10.1.1.3

Member IP List : 10.1.1.10 (Local, Master)

10.1.1.20 (Backup)

VRRP Track Information:

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 : 10.1.1.20

Forwarder Weight Track Information:

Track Object : 1 State : Positive Weight Reduced : 250

Interface Vlan-interface2

VRID : 11 Adver Timer : 100

Admin Status : Up State : Backup

Config Pri : 80 Running Pri : 80

Preempt Mode : Yes Delay Time : 0

Become Master : 2370ms left

Auth Type : None

Virtual IP : 10.1.1.11

10.1.1.12

10.1.1.13

Member IP List : 10.1.1.10 (Local, Backup)

10.1.1.15 (Master)

Forwarder Information: 2 Forwarders 1 Active

Config Weight : 255

Running Weight : 255

Forwarder 01

State : Active

Virtual MAC : 000f-e2ff-40b1 (Learnt)

Owner ID : 0000-5e01-1103

Priority : 127

Active : 10.1.1.15

Forwarder 02

State : Listening

Virtual MAC : 000f-e2ff-40b2 (Owner)

Owner ID : 0000-5e01-1101

Priority : 255

Active : local

Table 4 Command output (in load balancing mode)

Field	Description
Running Mode	VRRP operating mode (load balancing mode).
Total number of virtual routers	Total number of VRRP groups.
Interface	Interface where the VRRP group is configured.
VRID	Virtual router ID (VRRP group number).
Adver Timer	VRRP advertisement sending interval in centiseconds.
Admin Status	Administrative status: up or down.
State	Status of the router in the VRRP group: · Master. · Backup. · Initialize. · Inactive.
Config Pri	Configured priority of the router, which is configured by using the vrrp vrid priority command.
Running Pri	Current priority of the router. When a track entry is associated with a VRRP group on the router, the router's priority changes when the track entry's status changes.
Preempt Mode	Preemptive mode: · Yes. · No.
Delay Time	Preemption delay time in centiseconds.
Become Master	Time, in milliseconds, that a backup router has to wait before it becomes the master.
Auth Type	Authentication type: · None—No authentication. · Simple—Simple text authentication. · MD5—MD5 authentication.
Key	Authentication key, which is not displayed if no authentication is required.
Virtual IP	Virtual IP address list of the VRRP group.
Member IP List	IP addresses of the member devices in the VRRP group: · Local—IP address of the local router. · Master—IP address of the master. · Backup—IP address of the backup.
VRRP Track Information	Track entry which is associated with the VRRP group. This field is displayed only after you have configured the vrrp vrid track command.
Track Object	Track entry to be monitored.
State	Track entry state: · Negative. · Positive. · NotReady.
Pri Reduced	Value by which the priority decreases when the status of the associated track entry becomes negative. This field is displayed only after you have configured vrrp vrid track command.
Switchover	Switchover mode. When the status of the associated track entry becomes negative, the backup immediately becomes the master.
Forwarder Information: 2 Forwarders 1 Active	VF information: Two VFs exist, and one is the AVF.
Config Weight	Configured weight of the VF: 255.
Running Weight	Current weight of the VF. When a track entry is associated with the VFs of a VRRP group, the VFs' weights change when the track entry's status changes.
Forwarder 01	Information about VF 01.
State	VF state: · Active. · Listening. · Initialize.
Virtual MAC	Virtual MAC address of the VF.
Owner ID	Real MAC address of the VF owner.
Priority	VF priority in the range of 1 to 255.
Active	IP address of the interface where the AVF resides. If the current VF is the AVF, local is displayed.
Forwarder Weight Track Configuration	VF weight Track configuration. The field is displayed only after you have configured the vrrp vrid weight track command.
Track Object	Track entry which is associated with the VFs. The field is displayed only after you have configured the vrrp vrid weight track command.
State	Track entry state: · Negative. · Positive. · NotReady.
Weight Reduced	Value by which the weights of the VFs decrease when the state of the associated track entry changes to negative. The field is displayed only after you configure the vrrp vrid weight track command.

display vrrp binding

Use display vrrp binding to display master-to-subordinate IPv4 VRRP group bindings.

Syntax

display vrrp binding [ interface interface-type interface-number [ vrid virtual-router-id ] | name name ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

interface interface-type interface-number: Specifies an interface by its type and number. The interface must be an interface to which master IPv4 VRRP groups belong.

vrid virtual-router-id: Specifies a master IPv4 VRRP group by its virtual router ID in the range of 1 to 255.

name name: Specifies a master IPv4 VRRP group by its name, a case-sensitive string of 1 to 20 characters.

Usage guidelines

If you do not specify any parameters, this command displays all master-to-subordinate IPv4 VRRP group bindings.

If you specify an interface but do not specify the virtual router ID of a master VRRP group, this command displays all master-to-subordinate VRRP group bindings on the specified interface.

If you specify an interface and the virtual router ID of a master VRRP group, this command displays the binding information about the specified master VRRP group on the specified interface.

Examples

# Display master-to-subordinate IPv4 VRRP group bindings.

[Sysname] display vrrp binding

IPv4 virtual router binding information:

Total number of master virtual routers : 1

Total number of subordinate virtual routers : 2

Interface : Vlan2 Master VRID : 1

Name : a Status : Backup

Subordinate virtual routers : 1

Interface : Vlan2 VRID : 4

Interface : -- Master VRID : --

Name : c Status : --

Subordinate virtual routers : 1

Interface : Vlan2 VRID : 5

Table 5 Command output

Field	Description
Total number of master virtual routers	Total number of master VRRP groups.
Total number of subordinate virtual routers	Total number of subordinate VRRP groups.
Interface	Interface to which the master VRRP group belongs. If the master VRRP group does not exist, this field displays two hyphens (--).
Master VRID	Virtual router ID of the master VRRP group. If the master VRRP group does not exist, this field displays two hyphens (--).
Name	Name of the master VRRP group.
Status	Status of the router in the master VRRP group: · Master. · Backup. · Initialize. · Inactive. If the master VRRP group does not exist, this field displays two hyphens (--).
Subordinate virtual routers	Number of subordinate VRRP groups.
Interface	Interface to which the subordinate VRRP group belongs.
VRID	Virtual router ID of the subordinate VRRP group.

Related commands

vrrp vrid follow

vrrp vrid name

display vrrp statistics

Use display vrrp statistics to display statistics for IPv4 VRRP groups.

Syntax

display vrrp statistics [ interface interface-type interface-number [ vrid virtual-router-id ] ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

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

vrid virtual-router-id: Specifies an IPv4 VRRP group by its virtual router ID in the range of 1 to 255.

Usage guidelines

· If no interface or VRRP group is specified, this command displays statistics for all IPv4 VRRP groups.

· If only an interface is specified, this command displays statistics for all IPv4 VRRP groups on the specified interface.

· If both an interface and an IPv4 VRRP group are specified, this command displays statistics for the specified IPv4 VRRP group on the specified interface.

You can use the reset vrrp statistics command to clear statistics for IPv4 VRRP groups.

Examples

# Display statistics for all IPv4 VRRP groups when VRRP operates in standard mode.

<Sysname> display vrrp statistics

Interface : Vlan-interface2

VRID : 1

CheckSum Errors : 0 Version Errors : 0

Invalid Pkts Rcvd : 0 Unexpected Pkts Rcvd : 0

IP TTL Errors : 0 Advertisement Interval Errors : 0

Invalid Auth Type : 0 Auth Failures : 0

Packet Length Errors : 0 Auth Type Mismatch : 0

Become Master : 1 Address List Errors : 0

Adver Rcvd : 0 Priority Zero Pkts Rcvd : 0

Adver Sent : 807 Priority Zero Pkts Sent : 0

Global statistics

CheckSum Errors : 0

Version Errors : 0

VRID Errors : 0

# Display statistics for all IPv4 VRRP groups when VRRP operates in load balancing mode.

<Sysname> display vrrp statistics

Interface : Vlan-interface2

VRID : 1

CheckSum Errors : 0 Version Errors : 0

Invalid Pkts Rcvd : 0 Unexpected Pkts Rcvd : 0

IP TTL Errors : 0 Advertisement Interval Errors : 0

Invalid Auth Type : 0 Auth Failures : 0

Packet Length Errors : 0 Auth Type Mismatch : 0

Become Master : 39 Address List Errors : 0

Become AVF : 13 Packet Option Errors : 0

Adver Rcvd : 2562 Priority Zero Pkts Rcvd : 1

Adver Sent : 16373 Priority Zero Pkts Sent : 49

Request Rcvd : 2 Reply Rcvd : 10

Request Sent : 12 Reply Sent : 2

Release Rcvd : 0 VF Priority Zero Pkts Rcvd : 1

Release Sent : 0 VF Priority Zero Pkts Sent : 11

Redirect Timer Expires : 1 Time-out Timer Expires : 0

Global statistics

CheckSum Errors : 0

Version Errors : 0

VRID Errors : 0

Table 6 Command output (in standard mode)

Field	Description
Interface	Interface where the VRRP group is configured.
VRID	VRRP group number.
CheckSum Errors	Number of packets with checksum errors.
Version Errors	Number of packets with version errors.
Invalid Pkts Rcvd	Number of received packets of invalid packet types.
Unexpected Pkts Rcvd	Number of received unexpected packets.
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 because of invalid authentication types.
Auth Type Mismatch	Number of packets with authentication failures because of 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 elected as the master.
Priority Zero Pkts Rcvd	Number of received advertisements with the router priority of 0.
Adver Rcvd	Number of received advertisements.
Priority Zero Pkts Sent	Number of sent advertisements with the router priority of 0.
Adver Sent	Number of sent advertisements.
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 7 Command output (in load balancing mode)

Field	Description
Interface	Interface where the VRRP group is configured.
VRID	VRRP group number.
CheckSum Errors	Number of packets with checksum errors.
Version Errors	Number of packets with version errors.
Invalid Pkts Rcvd	Number of received packets of invalid packet types.
Unexpected Pkts Rcvd	Number of received unexpected packets.
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 because of invalid authentication types.
Auth Type Mismatch	Number of packets with authentication failures because of 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 elected as the master.
Redirect Timer Expires	Number of times that the redirect timer expired.
Become AVF	Number of times that the VF elected as the AVF.
Time-out Timer Expires	Number of times that the time-out timer expired.
Adver Rcvd	Number of received advertisements.
Request Rcvd	Number of received requests.
Adver Sent	Number of sent advertisements.
Request Sent	Number of sent requests.
Reply Rcvd	Number of received replies.
Release Rcvd	Number of received release packets.
Reply Sent	Number of sent replies.
Release Sent	Number of sent release packets.
Priority Zero Pkts Rcvd	Number of received advertisements with the router 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 router priority of 0.
VF Priority Zero Pkts Sent	Number of sent advertisements with the VF priority of 0.
Packet Option Errors	Number of packet option errors.
Global statistics	Global statistics for all IPv4 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.

Related commands

reset vrrp statistics

Use reset vrrp statistics to clear statistics for IPv4 VRRP groups.

Syntax

reset vrrp statistics [ interface interface-type interface-number [ vrid virtual-router-id ] ]

Views

User view

Predefined user roles

network-admin

Parameters

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

vrid virtual-router-id: Specifies an IPv4 VRRP group by its virtual router ID in the range of 1 to 255.

Usage guidelines

· If no interface or VRRP group is specified, this command clears statistics for all IPv4 VRRP groups.

· If only an interface is specified, this command clears statistics for all IPv4 VRRP groups on the specified interface.

· If both an interface and an IPv4 VRRP group are specified, this command clears statistics for the specified IPv4 VRRP group on the specified interface.

Examples

# Clear statistics for all IPv4 VRRP groups on all interfaces.

<Sysname> reset vrrp statistics

Related commands

display vrrp statistics

snmp-agent trap enable vrrp

Use snmp-agent trap enable vrrp to enable SNMP notifications for VRRP globally.

Use undo snmp-agent trap enable vrrp to disable SNMP notifications for VRRP globally.

Syntax

snmp-agent trap enable vrrp [ auth-failure | new-master ]

undo snmp-agent trap enable vrrp [ auth-failure | new-master ]

Default

SNMP notifications for VRRP are enabled.

Views

System view

Predefined user roles

network-admin

Parameters

auth-failure: Generates notifications as defined in RFC 2787 when the device in a VRRP group receives a VRRP advertisement with the authentication type or key not matching the local configuration.

new-master: Generates notifications as defined in RFC 2787 when the state of a device in a VRRP group changes from Initialize or Backup to Master.

Usage guidelines

When the notification feature is enabled, the device can send notifications to the destination host. To specify the notification type (inform or trap) and target host, use the snmp-agent target-host command.

Examples

# Generate notifications as defined in RFC 2787 when the device in a VRRP group receives a VRRP advertisement with the authentication type or key not matching the local configuration.

<Sysname> system-view

[Sysname] snmp-agent trap enable vrrp auth-failure

vrrp check-ttl enable

Use vrrp check-ttl enable to enable TTL check for IPv4 VRRP packets.

Use undo vrrp check-ttl enable to disable TTL check for IPv4 VRRP packets.

Syntax

vrrp check-ttl enable

undo vrrp check-ttl enable

Default

TTL check for IPv4 VRRP packets is enabled.

Views

Interface view

Predefined user roles

network-admin

Usage guidelines

The master in an IPv4 VRRP group periodically sends VRRP advertisements to declare its presence. The VRRP advertisements are multicast in the local subnet and cannot be forwarded by routers, so the TTL value is not changed. When the master sends VRRP advertisements, it sets the TTL value to 255. If you enable TTL check, the backups drop the VRRP advertisements with TTL other than 255, preventing attacks from other subnets.

Devices from different vendors might implement VRRP differently. When the device is interoperating with devices of other vendors, TTL check on VRRP packets might result in unexpected dropping of packets. In this scenario, use the undo vrrp check-ttl enable command to disable TTL check on VRRP packets.

Examples

# Disable TTL check for IPv4 VRRP packets.

<Sysname> system-view

[Sysname] interface vlan-interface 2

[Sysname-Vlan-interface2] undo vrrp check-ttl enable

vrrp dscp

Use vrrp dscp to configure a DSCP value for VRRP packets.

Use undo vrrp dscp to restore the default.

Syntax

vrrp dscp dscp-value

undo vrrp dscp

Default

The DSCP value for VRRP packets is 48.

Views

System view

Predefined user roles

network-admin

Parameters

dscp-value: Specifies a DSCP value for VRRP packets, in the range of 0 to 63.

Usage guidelines

The DSCP value identifies the packet priority during transmission. A greater DSCP value means a higher packet priority.

Examples

# Configure the DSCP value for VRRP packets as 30.

<Sysname> system-view

[Sysname] vrrp dscp 30

vrrp mode

Use vrrp mode to specify the operating mode for IPv4 VRRP.

Use undo vrrp mode to restore the default.

Syntax

vrrp mode load-balance [ version-8 ]

undo vrrp mode

Default

IPv4 VRRP operates in standard mode.

Views

System view

Predefined user roles

network-admin

Parameters

load-balance: Specifies the load balancing mode.

version-8: Specifies the version carried in VRRP packets as 8.

Usage guidelines

After you create IPv4 VRRP groups on the router, you can specify their operating mode by using this command. All IPv4 VRRP groups on the router operate in the specified mode.

The version-8 keyword takes effect only when the version of IPv4 VRRP configured on the interface is VRRPv2. The version-8 keyword is required in the following conditions:

· A router running Comware 5 software or software with version earlier than Comware 7 exists in the VRRP group.

To display the software version, use the display version command.

· All routers in the IPv4 VRRP group are operating in load balancing mode.

· All routers in the IPv4 VRRP group are configured with the version of VRRPv2.

Examples

# Specify the load balancing mode for IPv4 VRRP.

<Sysname> system-view

[Sysname] vrrp mode load-balance

Related commands

display vrrp

vrrp send-gratuitous-arp

Use vrrp send-gratuitous-arp to enable periodic sending of gratuitous ARP packets for IPv4 VRRP.

Use undo vrrp send-gratuitous-arp to restore the default.

Syntax

vrrp send-gratuitous-arp [ interval interval ]

undo vrrp send-gratuitous-arp

Default

Periodic sending of gratuitous ARP packets is disabled for IPv4 VRRP.

Views

System view

Predefined user roles

network-admin

Parameters

interval: Specifies the sending interval in the range of 30 to 1200 seconds. The default value is 120 seconds.

Usage guidelines

This command ensures that the MAC address entry for the virtual MAC address of a VRRP group can be updated on downstream devices in a timely manner.

This command takes effect only in VRRP standard mode.

If you change the sending interval for gratuitous ARP packets, the configuration takes effect at the next sending interval.

The master sends the first gratuitous ARP packet at a random time in the second half of the set interval after you execute the vrrp send-gratuitous-arp command. This prevents too many gratuitous ARP packets from being sent at the same time.

The sending interval for gratuitous ARP packets might be much longer than the set interval when the following conditions are met:

· Multiple VRRP groups exist on the device.

· A short sending interval is set.

Examples

# Enable periodic sending of gratuitous ARP packets for IPv4 VRRP and set the sending interval to 200 seconds.

<Sysname> system-view

[Sysname] vrrp send-gratuitous-arp interval 200

vrrp version

Use vrrp version to specify the version of IPv4 VRRP on an interface.

Use undo vrrp version to restore the default.

Syntax

vrrp version version-number

undo vrrp version

Default

VRRPv3 is used.

Views

Interface view

Predefined user roles

network-admin

Parameters

version-number: Specifies a VRRP version. The version number is 2 or 3, where 2 indicates VRRPv2 (described in RFC 3768), and 3 indicates VRRPv3 (described in RFC 5798).

Usage guidelines

The version of VRRP on all routers in an IPv4 VRRP group must be the same.

Examples

# Specify VRRPv2 to run on VLAN-interface 10.

<Sysname> system-view

[Sysname] interface vlan-interface 10

[Sysname-Vlan-interface10] vrrp version 2

vrrp vrid

Use vrrp vrid to create an IPv4 VRRP group and assign a virtual IP address to the IPv4 VRRP group or to assign a virtual IP address to an existing IPv4 VRRP group.

Use undo vrrp vrid to remove all configurations of an existing IPv4 VRRP group or to remove a virtual IP address from an existing IPv4 VRRP group.

Syntax

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

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

Default

No IPv4 VRRP group is created.

Views

Interface view

Predefined user roles

network-admin

Parameters

virtual-router-id: Specifies an IPv4 VRRP group by its virtual router ID in the range of 1 to 255.

virtual-ip virtual-address: Specifies a virtual IP address, which cannot be an all-zero address (0.0.0.0); a broadcast address (255.255.255.255); a loopback address; an IP address of other than Class A, Class B, and Class C; or an invalid IP address (for example, 0.0.0.1). If you do not specify this option, the undo vrrp vrid command removes all virtual IP addresses from the existing IPv4 VRRP group.

Usage guidelines

You can assign up to 16 virtual IP addresses to an IPv4 VRRP group.

If you create an IPv4 VRRP group but do not assign any virtual IP address to it, the VRRP group stays in inactive state and does not function.

The virtual IP address of an IPv4 VRRP group and the downlink interface IP address of the VRRP group must be in the same subnet. Otherwise, the hosts in the subnet might fail to access external networks.

In load balancing mode, the virtual IP address of an IPv4 VRRP group cannot be the same as the IP address of any interface in the VRRP group. Otherwise, the load balancing mode cannot operate.

Examples

# Create IPv4 VRRP group 1 and assign virtual IP address 10.10.10.10 to the VRRP group. Then assign virtual IP address 10.10.10.11 to the VRRP group.

<Sysname> system-view

[Sysname] interface vlan-interface 2

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

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

Related commands

display vrrp

vrrp vrid authentication-mode

Use vrrp vrid authentication-mode to configure the authentication mode and the authentication key for an IPv4 VRRP group to send and receive VRRP packets.

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

Syntax

vrrp vrid virtual-router-id authentication-mode { md5 | simple } { cipher | plain } key

undo vrrp vrid virtual-router-id authentication-mode

Default

Authentication is disabled when a VRRP group sends and receives VRRP packets.

Views

Interface view

Predefined user roles

network-admin

Parameters

virtual-router-id: Specifies an IPv4 VRRP group by its virtual router ID in the range of 1 to 255.

md5: Specifies the MD5 authentication mode.

simple: Specifies the simple authentication mode.

cipher: Sets a ciphertext authentication key.

plain: Sets a plaintext authentication key.

key: Sets the authentication key. This argument is case-sensitive. It must be a ciphertext string of 1 to 41 characters if the cipher keyword is specified or a plaintext string of 1 to 8 characters if the plain keyword is specified.

Usage guidelines

To avoid attacks from unauthorized users, VRRP member routers add authentication keys in VRRP packets to authenticate one another. VRRP provides the following authentication modes:

· simple—Simple text authentication.

The sender fills an authentication key into the VRRP packet, and the receiver compares the received authentication key with its local authentication key. If the two authentication keys are the same, the received VRRP packet is legitimate. Otherwise, the received packet is illegitimate.

· md5—MD5 authentication.

The sender computes a digest for the packet to be sent by using the authentication key and MD5 algorithm, and it saves the result in the authentication header. The receiver performs the same operation by using the authentication key and MD5 algorithm, and it compares the result with the content in the authentication header. If the results are the same, the received VRRP packet is legitimate. Otherwise, the received packet is illegitimate.

The MD5 authentication is more secure than the simple text authentication, but it costs more resources.

For security purposes, all keys, including keys configured in plain text, are saved in cipher text.

IMPORTANT:

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

· For VRRPv3, this command does not take effect.

Examples

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

<Sysname> system-view

[Sysname] interface vlan-interface 2

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

Related commands

· display vrrp

· vrrp version

vrrp vrid follow

Use vrrp vrid follow to configure an IPv4 VRRP group to follow a master group.

Use undo vrrp vrid follow to remove the configuration.

Syntax

vrrp vrid virtual-router-id follow name

undo vrrp vrid virtual-router-id follow

Default

An IPv4 VRRP group does not follow a master group.

Views

Interface view

Predefined user roles

network-admin

Parameters

virtual-router-id: Specifies an IPv4 VRRP group by its virtual router ID in the range of 1 to 255.

name: Specifies a master IPv4 VRRP group by its name, a case-sensitive string of 1 to 20 characters.

Usage guidelines

This command configures an IPv4 VRRP group as a subordinate VRRP group to follow a master group. A subordinate VRRP group can forward service traffic.

An IPv4 VRRP group cannot be both a master group and a subordinate group.

An IPv4 VRRP group stays in Inactive state if it is configured to follow a nonexistent master VRRP group.

If an IPv4 VRRP group in Inactive or Initialize state follows a master group that is not in Inactive state, the state of the VRRP group does not change.

Examples

# Configure IPv4 VRRP group 1 to follow master group abc.

<Sysname> system-view

[Sysname] interface vlan-interface 2

[Sysname-Vlan-interface2] vrrp vrid 1 follow abc

Related commands

display vrrp binding

vrrp vrid name

Use vrrp vrid name to configure an IPv4 VRRP group as a master group and assign a name to it.

Use undo vrrp vrid name to remove the configuration.

Syntax

vrrp vrid virtual-router-id name name

undo vrrp vrid virtual-router-id name

Default

An IPv4 VRRP group does not act as a master group.

Views

Interface view

Predefined user roles

network-admin

Parameters

virtual-router-id: Specifies an IPv4 VRRP group by its virtual router ID in the range of 1 to 255.

name: Specifies a master IPv4 VRRP group name, a case-sensitive string of 1 to 20 characters.

Usage guidelines

This command configures an IPv4 VRRP group as a master group by assigning a master group name to it. A VRRP group that follows the master group is a subordinate VRRP group. The master VRRP group exchanges VRRP packets among member devices. The subordinate VRRP group does not exchange VRRP packets and follows the state of the master group. Both the master and subordinate VRRP groups can forward service traffic.

You cannot assign the same master VRRP group name to different VRRP groups on a device.

An IPv4 VRRP group cannot be both a master group and a subordinate group.

Examples

# Configure IPv4 VRRP group 1 as a master group and assign master group name abc to it.

<Sysname> system-view

[Sysname] interface vlan-interface 2

[Sysname-Vlan-interface2] vrrp vrid 1 name abc

Related commands

display vrrp binding

vrrp vrid follow

vrrp vrid preempt-mode

Use vrrp vrid preempt-mode to enable the preemptive mode for the device in an IPv4 VRRP group and configure the preemption delay.

Use undo vrrp vrid preempt-mode to disable the preemptive mode for the device in an IPv4 VRRP group.

Use undo vrrp vrid preempt-mode delay to restore the default preemption delay.

Syntax

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

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

Default

The device operates in preemptive mode and the preemption delay is 0 centiseconds.

Views

Interface view

Predefined user roles

network-admin

Parameters

virtual-router-id: Specifies an IPv4 VRRP group by its virtual router ID in the range of 1 to 255.

delay delay-value: Specifies a preemption delay time in the range of 0 to 180000 in centiseconds. The default setting is 0 centiseconds.

Usage guidelines

In non-preemptive mode, when a device in the IPv4 VRRP group becomes the master, it acts as the master as long as it operates correctly, even if a backup is assigned a higher priority later. The non-preemptive mode helps avoid frequent switchover between the master and backups.

In preemptive mode, a backup takes over as the master and sends VRRP advertisements when it detects that it has a higher priority than the master. The previous master then becomes a backup. This mechanism makes sure the master is always the device with the highest priority.

To avoid frequent state changes among members in a VRRP group and to provide the backups enough time to collect information (such as routing information), a backup does not immediately become the master after it receives an advertisement with lower priority than the local priority. Instead, it waits for a period of time before taking over as the master.

Examples

# Enable the preemptive mode for VLAN-interface 2, and set the preemption delay time to 500 centiseconds.

<Sysname> system-view

[Sysname] interface vlan-interface 2

[Sysname-Vlan-interface2] vrrp vrid 1 preempt-mode delay 500

Related commands

display vrrp

vrrp vrid priority

Use vrrp vrid priority to configure the priority of the device in an IPv4 VRRP group.

Use undo vrrp vrid priority to restore the default.

Syntax

vrrp vrid virtual-router-id priority priority-value

undo vrrp vrid virtual-router-id priority

Default

The priority of a device in an IPv4 VRRP group is 100.

Views

Interface view

Predefined user roles

network-admin

Parameters

virtual-router-id: Specifies an IPv4 VRRP group by its virtual router ID in the range of 1 to 255.

priority-value: Specifies a priority value in the range of 1 to 254. A higher number indicates a higher priority.

Usage guidelines

VRRP determines the role (master or backup) of each device in a VRRP group by priority. A device with a higher priority is more likely to become the master.

VRRP priority is in the range of 0 to 255, and a greater number represents a higher priority. Priorities 1 to 254 are configurable. Priority 0 is reserved for special uses, and priority 255 is for the IP address owner. The device acting as the IP address owner in a VRRP group always has a running priority of 255 and acts as the master as long as it works correctly.

Examples

# Configure the priority of the switch in VRRP group 1 on VLAN-interface 2 to 150.

<Sysname> system-view

[Sysname] interface vlan-interface 2

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

Related commands

· display vrrp

· vrrp vrid track

vrrp vrid shutdown

Use vrrp vrid shutdown to disable an IPv4 VRRP group.

Use undo vrrp vrid shutdown to restore the default.

Syntax

vrrp vrid virtual-router-id shutdown

undo vrrp vrid virtual-router-id shutdown

Default

An IPv4 VRRP group is enabled.

Views

Interface view

Predefined user roles

network-admin

Parameters

virtual-router-id: Specifies an IPv4 VRRP group by its virtual router ID in the range of 1 to 255.

Usage guidelines

You can use this command to temporarily disable an IPv4 VRRP group. After this command is configured, the VRRP group stays in initialized state, and its configurations remain unchanged. You can change its configuration and your changes take effect when you enable the VRRP group again.

Examples

# Disable IPv4 VRRP group 1.

<Sysname> system-view

[Sysname] interface vlan-interface 2

[Sysname-Vlan-interface2] vrrp vrid 1 shutdown

vrrp vrid source-interface

Use vrrp vrid source-interface to specify the source interface for an IPv4 VRRP group. This interface, instead of the interface where the VRRP group resides, sends and receives VRRP packets.

Use undo vrrp source-interface to cancel the specified source interface.

Syntax

vrrp vrid virtual-router-id source-interface interface-type interface-number

undo vrrp vrid virtual-router-id source-interface

Default

No source interface is specified for a VRRP group. The interface where the VRRP group resides sends and receives VRRP packets.

Views

Interface view

Predefined user roles

network-admin

Parameters

virtual-router-id: Specifies an IPv4 VRRP group by its virtual router ID in the range of 1 to 255.

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

Usage guidelines

If VRRP group members cannot exchange VRRP packets through the interfaces where the VRRP group resides, you can use this command to enable VRRP packet exchange among VRRP group members through the specified source interfaces.

Examples

# Specify VLAN-interface 20 as the source interface for VRRP packet exchange in IPv4 VRRP group 10.

<Sysname> system-view

[Sysname] interface vlan-interface 10

[Sysname-Vlan-interface10] vrrp vrid 10 source-interface vlan-interface 20

vrrp vrid timer advertise

Use vrrp vrid timer advertise to configure the interval at which the master in an IPv4 VRRP group sends VRRP advertisements.

Use undo vrrp vrid timer advertise to restore the default.

Syntax

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

undo vrrp vrid virtual-router-id timer advertise

Default

The master in an IPv4 VRRP group sends VRRP advertisements at an interval of 100 centiseconds.

Views

Interface view

Predefined user roles

network-admin

Parameters

virtual-router-id: Specifies an IPv4 VRRP group by its virtual router ID in the range of 1 to 255.

adver-interval: Specifies an interval for the master in the specified IPv4 VRRP group to send VRRP advertisements. The value range for this argument is 10 to 4095 centiseconds. For VRRPv2, the value of the adver-interval argument can only be a multiple of 100. For example, if you configure values in the range of 10 to 100, 101 to 200, and 4001 to 4095, the actual values are 100, 200, and 4100, respectively. For VRRPv3, the value of the adver-interval argument that you configured takes effect.

Usage guidelines

The master in an IPv4 VRRP group periodically sends VRRP advertisements to declare its presence. You can use this command to configure the interval at which the master sends VRRP advertisements.

As a best practice to maintain system stability, set the VRRP advertisement interval to be greater than 100 centiseconds.

In VRRPv2, all routers in an IPv4 VRRP group must have the same interval for sending VRRP advertisements.

In VRRPv3, the routers in an IPv4 VRRP group can have different intervals for sending VRRP advertisements. The master in the VRRP group sends VRRP advertisements at the specified interval and carries the interval attribute in the advertisements. After a backup receives the advertisement, it records the interval in the advertisement. If the backup does not receive a new VRRP advertisement from the master when the timer (3 × recorded interval + Skew_Time) expires, it regards the master as failed and takes over as the master.

Large network traffic might disable a backup from receiving VRRP advertisements from the master within the specified time and trigger an unexpected master switchover. To solve this problem, you can use this command to configure a larger interval.

Examples

# Configure the master in IPv4 VRRP group 1 to send VRRP advertisements at an interval of 500 centiseconds.

<Sysname> system-view

[Sysname] interface vlan-interface 2

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

Related commands

display vrrp

vrrp vrid track

Use vrrp vrid track 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 undo vrrp vrid track 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.

Syntax

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

undo vrrp vrid virtual-router-id track [ track-entry-number [ forwarder-switchover | priority reduced | switchover | weight reduced ] ]

Default

A VRRP group and the VFs in a VRRP group are not associated with any track entry.

Views

Interface view

Predefined user roles

network-admin

Parameters

virtual-router-id: Specifies an IPv4 VRRP group number in the range of 1 to 255.

track-entry-number: Specifies a track entry. The track-entry-number argument is in the range of 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.

priority 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 negative. The priority-reduced argument is in the range of 1 to 255, and the default is 10.

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

weight reduced priority-reduced: Reduces the weight of all VFs on the router in the VRRP group by a specific value when the state of the specified track entry changes to negative. The weight-reduced argument is in the range of 1 to 255, and the default is 30.

Usage guidelines

When the associated track entry changes to the negative state, one of the following conditions occurs, depending on your configuration:

· The priority of the router in the VRRP group decreases by a specific value.

· The weight of VFs decreases by a specific value.

· The router immediately takes over as the master if it is a backup.

· The LVF on the router takes over the role of the AVF at the specified IP address immediately.

Before executing this command, create a VRRP group on the interface and assign a virtual IP address to it.

The forwarder-switchover member-ip ip-address or weight reduced weight-reduced option takes effect only when the IPv4 VRRP group is operating in load balancing mode.

If the priority reduced keyword is specified but the priority-reduced argument is not specified, the priority of the router in the VRRP group decreases by 10 when the track entry changes to negative.

If the weight reduced keyword is specified but the weight-reduced argument is not specified, the weight of the VFs on the router in the VRRP group decreases by 30 when the track entry changes to negative.

The weight of a VF is 255, and its lower limit of failure is 10.

When the weight of a VF owner is higher than or equal to the lower limit of failure, its priority is always 255 and does not change with the weight. To guarantee that an LVF can take over the VF owner as the AVF when the upstream link of the VF owner fails, the reduced weight for the VF owner must be higher than 245 so the weight of the VF owner can drop below the lower limit of failure.

When the track entry changes from Negative to Positive or NotReady, the router automatically restores its priority or VF weight. The failed master router becomes the master again, or the failed AVF becomes active again.

IMPORTANT:

· The vrrp vrid track priority reduced or vrrp vrid track switchover 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.

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 track 1 priority reduced 50

# Associate VRRP group 1 on VLAN-interface 2 with track entry 1 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 immediately after the specified track entry changes to the negative state.

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

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

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

Related commands

display vrrp

vrrp vrid vrrpv3-send-packet

Use vrrp vrid vrrpv3-send-packet to set the packet sending mode for IPv4 VRRPv3.

Use undo vrrp vrid vrrpv3-send-packet to restore the default.

Syntax

vrrp vrid virtual-router-id vrrpv3-send-packet { v2-only | v2v3-both }

undo vrrp vrid virtual-router-id vrrpv3-send-packet

Default

A router configured with IPv4 VRRPv3 sends only VRRPv3 packets.

Views

Interface view

Predefined user roles

network-admin

Parameters

virtual-router-id: Specifies an IPv4 VRRP group by its virtual router ID in the range of 1 to 255.

v2-only: Sends VRRPv2 packets only.

v2v3-both: Sends both VRRPv2 and VRRPv3 packets.

Usage guidelines

This command takes effect only on IPv4 VRRPv3.

The packet sending mode for IPv4 VRRPv3 takes effect only on outgoing VRRP packets. A router configured with VRRPv3 can process incoming VRRPv2 and VRRPv3 packets.

If you set the packet sending mode for IPv4 VRRPv3 and configure VRRP packet authentication, authentication information will be carried in outgoing VRRPv2 packets but not in outgoing VRRPv3 packets.

The VRRP advertisement interval is set in centiseconds by using the vrrp vrid timer advertise command. The VRRP advertisement interval carried in VRRPv2 packets sent from routers configured with VRRPv3 might be different from the configured value. For information about the VRRP advertisement interval, see the vrrp vrid timer advertise command.

Examples

# Configure VRRP group 1 to send both VRRPv2 and VRRPv3 packets.

<Sysname> system-view

[Sysname] interface vlan-interface 2

[Sysname-Vlan-interface2] vrrp vrid 1 vrrpv3-send-packet v2v3-both

Related commands

display vrrp

vrrp vrid timer advertise

IPv6 VRRP commands

display vrrp ipv6

Use display vrrp ipv6 to display the states of IPv6 VRRP groups.

Syntax

display vrrp ipv6 [ interface interface-type interface-number [ vrid virtual-router-id ] ] [ verbose ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

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

vrid virtual-router-id: Specifies an IPv6 VRRP group by its virtual router ID in the range of 1 to 255.

verbose: Displays detailed IPv6 VRRP group information. If you do not specify this keyword, the command displays brief IPv6 VRRP group information.

Usage guidelines

· If no interface or VRRP group is specified, this command displays the states of all IPv6 VRRP groups.

· If only an interface is specified, this command displays the states of all IPv6 VRRP groups on the specified interface.

· If both an interface and an IPv6 VRRP group are specified, this command displays the states of the specified IPv6 VRRP group on the specified interface.

Examples

# Display brief information about all IPv6 VRRP groups on the device when VRRP operates in standard mode.

<Sysname> display vrrp ipv6

IPv6 Virtual Router Information:

Running Mode : Standard

Total number of virtual routers : 1

Interface VRID State Running Adver Auth Virtual

Pri Timer Type IP

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

Vlan1 1 Master 150 100 None FE80::1

Table 8 Command output (in standard mode)

Field	Description
Running Mode	VRRP operating mode (standard mode).
Total number of virtual routers	Total number of VRRP groups.
Interface	Interface where the VRRP group is configured.
VRID	Virtual router ID (VRRP group number).
State	Status of the router in the VRRP group: · Master. · Backup. · Initialize. · Inactive.
Running Pri	Current priority of the router. When a track entry is associated with a VRRP group on the router, the router's priority changes when the track entry's status changes.
Adver Timer	VRRP advertisement sending interval in centiseconds.
Auth Type	Authentication type. Only none is available, which means no authentication is required.
Virtual IP	Virtual IP address of the VRRP group.

# Display detailed information about all IPv6 VRRP groups on the device when VRRP operates in standard mode.

<Sysname> display vrrp ipv6 verbose

IPv6 Virtual Router Information:

Running Mode : Standard

Total number of virtual routers : 2

Interface Vlan-interface2

VRID : 1 Adver Timer : 100

Admin Status : Up State : Master

Config Pri : 150 Running Pri : 150

Preempt Mode : Yes Delay Time : 10

Auth Type : None

Virtual IP : FE80::1

Virtual MAC : 0000-5e00-0201

Master IP : FE80::2

VRRP Track Information:

Track Object : 1 State : Positive Pri Reduced : 50

Interface Vlan-interface2

VRID : 11 Adver Timer : 100

Admin Status : Up State : Backup

Config Pri : 80 Running Pri : 80

Preempt Mode : Yes Delay Time : 0

Become Master : 2450ms left

Auth Type : None

Virtual IP : FE80::11

Virtual MAC : 0000-5e00-020b

Master IP : FE80::12

Table 9 Command output (in standard mode)

Field	Description
Running Mode	VRRP operating mode (standard mode).
Total number of virtual routers	Total number of VRRP groups.
Interface	Interface where the VRRP group is configured.
VRID	Virtual router ID (VRRP group number).
Adver Timer	VRRP advertisement sending interval in centiseconds.
Admin Status	Administrative status: up or down.
State	Status of the router in the VRRP group: · Master. · Backup. · Initialize. · Inactive.
Config Pri	Configured priority of the router, which is configured through the vrrp ipv6 vrid priority command.
Running Pri	Current priority of the router. When a track entry is associated with a VRRP group on the router, the router's priority changes when the track entry's status changes.
Preempt Mode	Preemptive mode: · Yes. · No.
Delay Time	Preemption delay time in centiseconds.
Become Master	Time, in milliseconds, that a backup router has to wait before it becomes the master.
Auth Type	Authentication type. Only none is available, which means no authentication is required.
Virtual IP	Virtual IP address of the VRRP group.
Virtual MAC	Virtual MAC address of the VRRP group's virtual IP address, which is displayed when the router is the master.
Master IP	Link-local address of the interface where the master resides.
VRRP Track Information	Track entry information. This field is displayed only after you have configured the vrrp ipv6 vrid track command.
Track Object	Track entry which is associated with the VRRP group.
State	Track entry state: · Negative. · Positive. · NotReady.
Pri Reduced	Value by which the priority decreases when the status of the associated track entry becomes negative.
Switchover	Switchover mode. When the status of the associated track entry becomes negative, the backup immediately becomes the master.

# Display brief information about all IPv6 VRRP groups on the device when VRRP operates in load balancing mode.

<Sysname> display vrrp ipv6

IPv6 Virtual Router Information:

Running Mode : Load Balance

Total number of virtual routers : 1

Interface VRID State Running Address Active

Pri

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

Vlan1 1 Master 150 FE80::1 Local

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

Table 10 Command output (in load balancing mode)

Field	Description
Running Mode	VRRP operating mode (load balancing mode).
Total number of virtual routers	Total number of VRRP groups.
Interface	Interface where the VRRP group is configured.
VRID	Virtual router ID (VRRP group number) or VF ID.
State	· For a VRRP group (when the VRID is a virtual router ID), this field indicates the state of the router in the VRRP group, including Master, Backup, Initialize, and Inactive. · For a VF (when the VRID is a VF ID), this field indicates the state of the VF in the VRRP group, including Active, Listening, and Initialize.
Running Pri	· For a VRRP group (when the VRID is a virtual router ID), this field indicates the running priority of the router. When a track entry is associated with a VRRP group on the router, the router's priority changes when the track entry's status changes. · For a VF (when the VRID is a VF ID), this field indicates the running priority of the VF. When a track entry is associated with a VF, the priority of the VF changes if the state of the monitored track entry changes.
Address	· For a VRRP group (when the VRID is a virtual router ID), this field indicates the virtual IP address of the VRRP group. · For a VF (when the VRID is a VF ID), this field indicates the virtual MAC address of the VF.
Active	· For a VRRP group (when the VRID is a virtual router ID), this field indicates the link-local address of the interface where the master resides. If the current router is the master, local is displayed. · For a VF (when the VRID is a VF ID), this field indicates the link-local address of the interface where the AVF resides. If the current VF is the AVF, local is displayed.

# Display detailed information about all IPv6 VRRP groups on the device when VRRP operates in load balancing mode.

<Sysname> display vrrp ipv6 verbose

IPv6 Virtual Router Information:

Running Mode : Load Balance

Total number of virtual routers : 2

Interface Vlan-interface2

VRID : 1 Adver Timer : 100

Admin Status : Up State : Master

Config Pri : 150 Running Pri : 150

Preempt Mode : Yes Delay Time : 5

Auth Type : None

Virtual IP : FE80::10

Member IP List : FE80::3 (Local, Master)

FE80::2 (Backup)

VRRP Track Information:

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

Interface Vlan-interface2

VRID : 11 Adver Timer : 100

Admin Status : Up State : Backup

Config Pri : 80 Running Pri : 80

Preempt Mode : Yes Delay Time : 0

Become Master : 2450ms left

Auth Type : None

Virtual IP : FE80::11

Member IP List : FE80::3 (Local, Backup)

FE80::2 (Master)

Forwarder Information: 2 Forwarders 1 Active

Config Weight : 255

Running Weight : 255

Forwarder 01

State : Active

Virtual MAC : 000f-e2ff-40b1 (Learnt)

Owner ID : 0000-5e01-1103

Priority : 127

Active : FE80::2

Forwarder 02

State : Listening

Virtual MAC : 000f-e2ff-40b2 (Owner)

Owner ID : 0000-5e01-1101

Priority : 255

Active : local

Table 11 Command output (in load balancing mode)

Field	Description
Running Mode	VRRP operating mode (load balancing mode).
Total number of virtual routers	Total number of VRRP groups.
Interface	Interface where the VRRP group is configured.
VRID	Virtual router ID (VRRP group number)
Adver Timer	VRRP advertisement sending interval in centiseconds.
Admin Status	Administrative status: up or down.
State	Status of the router in the VRRP group: · Master. · Backup. · Initialize. · Inactive.
Config Pri	Configured priority of the router, which is configured through the vrrp ipv6 vrid priority command.
Running Pri	Current priority of the router. When a track entry is associated with a VRRP group on the router, the router's priority changes when the track entry's status changes.
Preempt Mode	Preemptive mode: · Yes. · No.
Delay Time	Preemption delay time in centiseconds.
Become Master	Time, in milliseconds, that a backup router has to wait before it becomes the master.
Auth Type	Authentication type. Only none is available, which means no authentication is required.
Virtual IP	Virtual IP address list of the VRRP group.
Member IP List	IP addresses of the member devices in the VRRP group: · Local—IP address of the local router. · Master—IP address of the master. · Backup—IP address of the backup.
VRRP Track Information	Track entry which is associated with the VRRP group. This field is displayed only after you have configured the vrrp ipv6 vrid track command.
Track Object	Track entry to be monitored. This field is displayed only after you have configured the vrrp ipv6 vrid track command.
State	Track entry state: · Negative. · Positive. · NotReady.
Pri Reduced	Value by which the priority decreases when the status of the associated track entry becomes negative. This field is displayed only after you have configured vrrp ipv6 vrid track command.
Switchover	Switchover mode. When the status of the associated track entry becomes negative, the backup immediately becomes the master.
Forwarder Information: 2 Forwarders 1 Active	VF information: Two VFs exist and one is the AVF.
Config Weight	Configured weight of the VF: 255.
Running Weight	Current weight of the VF. When a track entry is associated with the VFs of a VRRP group, the VFs' weights change when the track entry's status changes.
Forwarder 01	Information about VF 01.
State	VF state: · Active. · Listening. · Initialize.
Virtual MAC	Virtual MAC address of the VF.
Owner ID	Real MAC address of the VF owner.
Priority	VF priority in the range of 1 to 255.
Active	Link-local address of the interface where the AVF resides. If the current VF is the AVF, local is displayed.
Forwarder Weight Track Configuration	VF weight Track configuration. The field is displayed only after you have configured the vrrp ipv6 vrid weight track command.
Track Object	Track entry which is associated with the VFs. The field is displayed only after you have configured the vrrp ipv6 vrid weight track command.
State	Track entry state: · Negative. · Positive. · NotReady.
Weight Reduced	Value by which the weights of the VFs decrease when the state of the associated track entry changes to negative. The field is displayed only after you have configured the vrrp ipv6 vrid weight track command.

display vrrp ipv6 binding

Use display vrrp ipv6 binding to display master-to-subordinate IPv6 VRRP group bindings.

Syntax

display vrrp ipv6 binding [ interface interface-type interface-number [ vrid virtual-router-id ] | name name ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

interface interface-type interface-number: Specifies an interface by its type and number. The interface must be an interface to which master IPv6 VRRP groups belong.

vrid virtual-router-id: Specifies a master IPv6 VRRP group by its virtual router ID in the range of 1 to 255.

name name: Specifies a master IPv6 VRRP group by its name, a case-sensitive string of 1 to 20 characters.

Usage guidelines

If you do not specify any parameters, this command displays all master-to-subordinate IPv6 VRRP group bindings.

If you specify an interface but do not specify the virtual router ID of a master IPv6 VRRP group, this command displays all master-to-subordinate IPv6 VRRP group bindings on the specified interface.

If you specify an interface and the virtual router ID of a master IPv6 VRRP group, this command displays the binding information about the specified master VRRP group on the specified interface.

Examples

# Display master-to-subordinate IPv6 VRRP group bindings.

[Sysname] display vrrp ipv6 binding

IPv6 virtual router binding information:

Total number of master virtual routers : 1

Total number of subordinate virtual routers : 2

Interface : Vlan2 Master VRID : 1

Name : a Status : Backup

Subordinate virtual routers : 1

Interface : Vlan2 VRID : 4

Interface : -- Master VRID : --

Name : c Status : --

Subordinate virtual routers : 1

Interface : Vlan2 VRID : 5

Table 12 Command output

Field	Description
Total number of master virtual routers	Total number of master IPv6 VRRP groups.
Total number of subordinate virtual routers	Total number of subordinate IPv6 VRRP groups.
Interface	Interface to which the master IPv6 VRRP group belongs. If the master IPv6 VRRP group does not exist, this field displays two hyphens (--).
Master VRID	Virtual router ID of the master IPv6 VRRP group. If the master IPv6 VRRP group does not exist, this field displays two hyphens (--).
Name	Name of the master IPv6 VRRP group.
Status	Status of the router in the master IPv6 VRRP group: · Master. · Backup. · Initialize. · Inactive. If the master IPv6 VRRP group does not exist, this field displays two hyphens (--).
Subordinate virtual routers	Number of subordinate IPv6 VRRP groups.
Interface	Interface to which the subordinate IPv6 VRRP group belongs.
VRID	Virtual router ID of the subordinate IPv6 VRRP group.

Related commands

vrrp ipv6 vrid follow

vrrp ipv6 vrid name

display vrrp ipv6 statistics

Use display vrrp ipv6 statistics to display statistics for IPv6 VRRP groups.

Syntax

display vrrp ipv6 statistics [ interface interface-type interface-number [ vrid virtual-router-id ] ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

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

vrid virtual-router-id: Specifies an IPv6 VRRP group by its virtual router ID in the range of 1 to 255.

Usage guidelines

· If no interface or VRRP group is specified, this command displays statistics for all IPv6 VRRP groups.

· If only an interface is specified, this command displays statistics for all IPv6 VRRP groups on the specified interface.

· If both an interface and an IPv6 VRRP group are specified, this command displays statistics for the specified IPv6 VRRP group on the specified interface.

You can use the reset vrrp ipv6 statistics command to clear statistics for IPv6 VRRP groups.

Examples

# Display statistics for all IPv6 VRRP groups when VRRP operates in standard mode.

<Sysname> display vrrp ipv6 statistics

Interface : Vlan-interface2

VRID : 1

CheckSum Errors : 0 Version Errors : 0

Invalid Pkts Rcvd : 0 Unexpected Pkts Rcvd : 0

Hop Limit Errors : 0 Advertisement Interval Errors : 0

Invalid Auth Type : 0 Auth Failures : 0

Packet Length Errors : 0 Auth Type Mismatch : 0

Become Master : 1 Address List Errors : 0

Adver Rcvd : 0 Priority Zero Pkts Rcvd : 0

Adver Sent : 425 Priority Zero Pkts Sent : 0

Global statistics

CheckSum Errors : 0

Version Errors : 0

VRID Errors : 0

# Display statistics for all IPv6 VRRP groups when VRRP operates in load balancing mode.

<Sysname> display vrrp ipv6 statistics

Interface : Vlan-interface2

VRID : 1

CheckSum Errors : 0 Version Errors : 0

Invalid Pkts Rcvd : 0 Unexpected Pkts Rcvd : 0

Hop Limit Errors : 0 Advertisement Interval Errors : 0

Invalid Auth Type : 0 Auth Failures : 0

Packet Length Errors : 0 Auth Type Mismatch : 0

Become Master : 39 Address List Errors : 0

Become AVF : 13 Packet Option Errors : 0

Adver Rcvd : 2562 Priority Zero Pkts Rcvd : 1

Adver Sent : 16373 Priority Zero Pkts Sent : 49

Request Rcvd : 2 Reply Rcvd : 10

Request Sent : 12 Reply Sent : 2

Release Rcvd : 0 VF Priority Zero Pkts Rcvd : 1

Release Sent : 0 VF Priority Zero Pkts Sent : 11

Redirect Timer Expires : 1 Time-out Timer Expires : 0

Global statistics

CheckSum Errors : 0

Version Errors : 0

VRID Errors : 0

Table 13 Command output (in standard mode)

Field	Description
Interface	Interface where the VRRP group is configured.
VRID	VRRP group number.
CheckSum Errors	Number of packets with checksum errors.
Version Errors	Number of packets with version errors.
Invalid Pkts Rcvd	Number of received packets of invalid packet types.
Unexpected Pkts Rcvd	Number of received unexpected packets.
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 because of invalid authentication types.
Auth Type Mismatch	Number of packets with authentication failures because of 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 elected as the master.
Priority Zero Pkts Rcvd	Number of received advertisements with the router priority of 0.
Adver Rcvd	Number of received advertisements.
Priority Zero Pkts Sent	Number of sent advertisements with the router priority of 0.
Adver Sent	Number of sent advertisements.
Global statistics	Global statistics for all IPv6 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 14 Command output (in load balancing mode)

Field	Description
Interface	Interface where the VRRP group is configured.
VRID	VRRP group number.
CheckSum Errors	Number of packets with checksum errors.
Version Errors	Number of packets with version errors.
Invalid Pkts Rcvd	Number of received packets of invalid packet types.
Unexpected Pkts Rcvd	Number of received unexpected packets.
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 because of invalid authentication types.
Auth Type Mismatch	Number of packets with authentication failures because of 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 elected as the master.
Redirect Timer Expires	Number of times that the redirect timer expired.
Become AVF	Number of times that the VF elected as the AVF.
Time-out Timer Expires	Number of times that the time-out timer expired.
Adver Rcvd	Number of received advertisements.
Request Rcvd	Number of received requests.
Adver Sent	Number of sent advertisements.
Request Sent	Number of sent requests.
Reply Rcvd	Number of received replies.
Release Rcvd	Number of received release packets.
Reply Sent	Number of sent replies.
Release Sent	Number of sent release packets.
Priority Zero Pkts Rcvd	Number of received advertisements with the router 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 router priority of 0.
VF Priority Zero Pkts Sent	Number of sent advertisements with the VF priority of 0.
Packet Option Errors	Number of packet option errors.
Global statistics	Global statistics for all IPv6 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.

Related commands

reset vrrp ipv6 statistics

Use reset vrrp ipv6 statistics to clear statistics for IPv6 VRRP groups.

Syntax

reset vrrp ipv6 statistics [ interface interface-type interface-number [ vrid virtual-router-id ] ]

Views

User view

Predefined user roles

network-admin

Parameters

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

vrid virtual-router-id: Specifies an IPv6 VRRP group by its virtual router ID in the range of 1 to 255.

Usage guidelines

· If no interface or VRRP group is specified, this command clears statistics for all IPv6 VRRP groups.

· If only an interface is specified, this command clears statistics for all IPv6 VRRP groups on the specified interface.

· If both an interface and an IPv6 VRRP group are specified, this command clears statistics for the specified IPv6 VRRP group on the specified interface.

Examples

# Clear statistics for all IPv6 VRRP groups on all interfaces.

<Sysname> reset vrrp ipv6 statistics

Related commands

display vrrp ipv6 statistics

vrrp ipv6 dscp

Use vrrp ipv6 dscp to configure a DSCP value for IPv6 VRRP packets.

Use undo vrrp ipv6 dscp to restore the default.

Syntax

vrrp ipv6 dscp dscp-value

undo vrrp ipv6 dscp

Default

The DSCP value for IPv6 VRRP packets is 56.

Views

System view

Predefined user roles

network-admin

Parameters

dscp-value: Specifies a DSCP value for IPv6 VRRP packets, in the range of 0 to 63.

Usage guidelines

The DSCP value identifies the packet priority during transmission. A greater DSCP value means a higher packet priority.

Examples

# Configure the DSCP value for IPv6 VRRP packets as 30.

<Sysname> system-view

[Sysname] vrrp ipv6 dscp 30

vrrp ipv6 mode

Use vrrp ipv6 mode to specify the operating mode for IPv6 VRRP.

Use undo vrrp ipv6 mode to restore the default.

Syntax

vrrp ipv6 mode load-balance

undo vrrp ipv6 mode

Default

IPv6 VRRP operates in standard mode.

Views

System view

Predefined user roles

network-admin

Parameters

load-balance: Specifies the load balancing mode.

Usage guidelines

When IPv6 VRRP operates in load balancing mode, the virtual IPv6 address of an IPv6 VRRP group cannot be the same as the IPv6 address of the interface where the VRRP group is configured. If the IPv6 addresses are the same, the load balancing mode cannot function.

After you create IPv6 VRRP groups on the router, you can specify their operating mode through this command. All IPv6 VRRP groups on the router operate in the specified mode.

Examples

# Specify the load balancing mode for IPv6 VRRP.

<Sysname> system-view

[Sysname] vrrp ipv6 mode load-balance

Related commands

display vrrp ipv6

vrrp ipv6 send-nd

Use vrrp ipv6 send-nd to enable periodic sending of ND packets for IPv6 VRRP.

Use undo vrrp ipv6 send-nd to restore the default.

Syntax

vrrp ipv6 send-nd [ interval interval ]

undo vrrp ipv6 send-nd

Default

Periodic sending of ND packets is disabled for IPv6 VRRP.

Views

System view

Predefined user roles

network-admin

Parameters

interval: Specifies the sending interval in the range of 30 to 1200 seconds. The default value is 120 seconds.

Usage guidelines

This command ensures that the MAC address entry for the virtual MAC address of an IPv6 VRRP group can be updated on downstream devices in a timely manner.

This command takes effect only in VRRP standard mode.

If you change the sending interval for ND packets, the configuration takes effect at the next sending interval.

The master sends the first ND packet at a random time in the second half of the set interval after you execute the vrrp ipv6 send-nd command. This prevents too many ND packets from being sent at the same time.

The sending interval for ND packets might be much longer than the set interval when the following conditions are met:

· Multiple IPv6 VRRP groups exist on the device.

· A short sending interval is set.

Examples

# Enable periodic sending of ND packets for IPv6 VRRP and set the sending interval to 200 seconds.

<Sysname> system-view

[Sysname] vrrp ipv6 send-nd interval 200

vrrp ipv6 vrid

Use vrrp ipv6 vrid to create an IPv6 VRRP group and assign a virtual IPv6 address to the VRRP group or to assign a virtual IPv6 address to an existing IPv6 VRRP group.

Use undo vrrp ipv6 vrid to remove all configurations of an existing IPv6 VRRP group or to remove a virtual IPv6 address from an existing IPv6 VRRP group.

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 ] ] ]

Default

No IPv6 VRRP group is created.

Views

Interface view

Predefined user roles

network-admin

Parameters

virtual-router-id: Specifies an IPv6 VRRP group by its virtual router ID in the range of 1 to 255.

virtual-ip virtual-address: Specifies a virtual IPv6 address. If you do not specify this option, the undo vrrp ipv6 vrid command removes all virtual IPv6 addresses from the existing IPv6 VRRP group.

link-local: Specifies a link-local address as the virtual IPv6 address.

Usage guidelines

You can assign up to 16 virtual IPv6 addresses to an IPv6 VRRP group.

The first virtual IPv6 address that you assign for an IPv6 VRRP group must be a link-local address, and it must be removed last.

An IPv6 VRRP group can have only one link-local address as its virtual IPv6 address.

If you create an IPv6 VRRP group but do not assign any virtual IPv6 address for it, the VRRP group stays in inactive state and does not function.

The virtual IPv6 address of an IPv6 VRRP group and the downlink interface IPv6 address of the VRRP group must be in the same subnet. Otherwise, the hosts in the subnet might fail to access external networks.

Examples

# Create IPv6 VRRP group 1 and assign virtual IPv6 address fe80::10 to the VRRP group. Then assign virtual IPv6 address 1::10 to the VRRP group.

<Sysname> system-view

[Sysname] interface vlan-interface 2

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

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

Related commands

display vrrp ipv6

vrrp ipv6 vrid follow

Use vrrp ipv6 vrid follow to configure an IPv6 VRRP group to follow a master group.

Use undo vrrp ipv6 vrid follow to remove the configuration.

Syntax

vrrp ipv6 vrid virtual-router-id follow name

undo vrrp ipv6 vrid virtual-router-id follow

Default

An IPv6 VRRP group does not follow a master group.

Views

Interface view

Predefined user roles

network-admin

Parameters

virtual-router-id: Specifies an IPv6 VRRP group by its virtual router ID in the range of 1 to 255.

name: Specifies a master IPv6 VRRP group by its name, a case-sensitive string of 1 to 20 characters.

Usage guidelines

This command configures an IPv6 VRRP group as a subordinate VRRP group to follow a master group. A subordinate IPv6 VRRP group can forward service traffic.

An IPv6 VRRP group cannot be both a master group and a subordinate group.

An IPv6 VRRP group stays in Inactive state if it is configured to follow a nonexistent master VRRP group.

If an IPv6 VRRP group in Inactive or Initialize state follows a master group that is not in Inactive state, the state of the VRRP group does not change.

Examples

# Configure IPv6 VRRP group 1 to follow master group abc.

<Sysname> system-view

[Sysname] interface vlan-interface 2

[Sysname-Vlan-interface2] vrrp ipv6 vrid 1 follow abc

Related commands

display vrrp ipv6 binding

vrrp ipv6 vrid name

Use vrrp ipv6 vrid name to configure an IPv6 VRRP group as a master group and assign a name to it.

Use undo vrrp ipv6 vrid name to remove the configuration.

Syntax

vrrp ipv6 vrid virtual-router-id name name

undo vrrp ipv6 vrid virtual-router-id name

Default

An IPv6 VRRP group does not act as a master group.

Views

Interface view

Predefined user roles

network-admin

Parameters

virtual-router-id: Specifies an IPv6 VRRP group by its virtual router ID in the range of 1 to 255.

name: Specifies a master IPv6 VRRP group name, a case-sensitive string of 1 to 20 characters.

Usage guidelines

This command configures an IPv6 VRRP group as a master group through assigning a master group name to it. An IPv6 VRRP group that follows the master group is a subordinate VRRP group. The master VRRP group exchanges VRRP packets among member devices. The subordinate group does not exchange VRRP packets and follows the state of the master group. Both the master and subordinate VRRP groups can forward service traffic.

You cannot assign the same master VRRP group name to different IPv6 VRRP groups on a device.

An IPv6 VRRP group cannot be both a master group and a subordinate group.

Examples

# Configure IPv6 VRRP group 1 as a master VRRP group and assign master group name abc to it.

<Sysname> system-view

[Sysname] interface vlan-interface 2

[Sysname-Vlan-interface2] vrrp ipv6 vrid 1 name abc

Related commands

display vrrp ipv6 binding

vrrp ipv6 vrid follow

vrrp ipv6 vrid preempt-mode

Use vrrp ipv6 vrid preempt-mode to enable the preemptive mode for the router in an IPv6 VRRP group and configure the preemption delay time.

Use undo vrrp ipv6 vrid preempt-mode to disable the preemptive mode for the router in an IPv6 VRRP group.

Use undo vrrp ipv6 vrid preempt-mode delay to restore the default preemption delay.

Syntax

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

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

Default

The router operates in preemptive mode and the preemption delay is 0 centiseconds.

Views

Interface view

Predefined user roles

network-admin

Parameters

virtual-router-id: Specifies an IPv6 VRRP group by its virtual router ID in the range of 1 to 255.

delay delay-value: Specifies a preemption delay time in the range of 0 to 180000 in centiseconds. The default setting is 0 centiseconds.

Usage guidelines

In non-preemptive mode, when a router in the IPv6 VRRP group becomes the master, it acts as the master as long as it operates correctly, even if a backup is assigned a higher priority later. The non-preemptive mode helps avoid frequent switchover between the master and backups.

Examples

# Enable the preemptive mode for VRRP group 1, and set the preemption delay time to 500 centiseconds.

<Sysname> system-view

[Sysname] interface vlan-interface 2

[Sysname-Vlan-interface2] vrrp ipv6 vrid 10 preempt-mode delay 500

Related commands

display vrrp ipv6

vrrp ipv6 vrid priority

Use vrrp ipv6 vrid priority to configure the priority of the router in an IPv6 VRRP group.

Use undo vrrp ipv6 vrid priority to restore the default.

Syntax

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

undo vrrp ipv6 vrid virtual-router-id priority

Default

The priority of a router in an IPv6 VRRP group is 100.

Views

Interface view

Predefined user roles

network-admin

Parameters

virtual-router-id: Specifies an IPv6 VRRP group by its virtual router ID in the range of 1 to 255.

priority-value: Specifies a priority value in the range of 1 to 254. A higher number indicates a higher priority.

Usage guidelines

VRRP determines the role (master or backup) of each router in a VRRP group by priority. A router with a higher priority is more likely to become the master.

VRRP priority is in the range of 0 to 255, and a greater number represents a higher priority. Priorities 1 to 254 are configurable. Priority 0 is reserved for special uses, and priority 255 is for the IP address owner. The router acting as the IP address owner in a VRRP group always has a running priority of 255 and acts as the master as long as it operates correctly.

Examples

# Configure the priority of the switch in VRRP group 1 on VLAN-interface 2 as 150.

<Sysname> system-view

[Sysname] interface vlan-interface 2

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

Related commands

display vrrp ipv6

vrrp ipv6 vrid shutdown

Use vrrp ipv6 vrid shutdown to disable an IPv6 VRRP group.

Use undo vrrp ipv6 vrid shutdown to restore the default.

Syntax

vrrp ipv6 vrid virtual-router-id shutdown

undo vrrp ipv6 vrid virtual-router-id shutdown

Default

An IPv6 VRRP group is enabled.

Views

Interface view

Predefined user roles

network-admin

Parameters

virtual-router-id: Specifies an IPv6 VRRP group by its virtual router ID in the range of 1 to 255.

Usage guidelines

You can use this command to temporarily disable an IPv6 VRRP group. After this command is configured, the VRRP group stays in initialized state, and its configurations remain unchanged. You can change its configuration, and your changes take effect when you enable the VRRP group again.

Examples

# Disable IPv6 VRRP group 1.

<Sysname> system-view

[Sysname] interface vlan-interface 2

[Sysname-Vlan-interface2] vrrp ipv6 vrid 1 shutdown

vrrp ipv6 vrid timer advertise

Use vrrp ipv6 vrid timer advertise to configure the interval at which the master in an IPv6 VRRP group sends VRRP advertisements.

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

Syntax

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

undo vrrp ipv6 vrid virtual-router-id timer advertise

Default

The master in an IPv6 VRRP group sends VRRP advertisements at an interval of 100 centiseconds.

Views

Interface view

Predefined user roles

network-admin

Parameters

virtual-router-id: Specifies an IPv6 VRRP group by its virtual router ID in the range of 1 to 255.

adver-interval: Specifies an interval for the master in the specified IPv6 VRRP group to send VRRP advertisements, in the range of 10 to 4095 centiseconds.

Usage guidelines

The master in an IPv6 VRRP group periodically sends VRRP advertisements to declare its presence. You can use this command to configure the interval at which the master sends VRRP advertisements.

As a best practice to maintain system stability, set the VRRP advertisement interval to be greater than 100 centiseconds.

The routers in an IPv6 VRRP group can have different intervals for sending VRRP advertisements. The master in the VRRP group sends VRRP advertisements at the specified interval and carries the interval attribute in the advertisements. After a backup receives the advertisement, it records the interval in the advertisement. If the backup does not receive a new VRRP advertisement from the master when the timer (3 × VRRP advertisement sending interval + Skew_Time) expires, it regards the master as failed and takes over as the master.

Examples

# Configure the master in IPv6 VRRP group 1 to send VRRP advertisements at an interval of 500 centiseconds.

<Sysname> system-view

[Sysname] interface vlan-interface 2

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

Related commands

display vrrp ipv6

vrrp ipv6 vrid track

Use vrrp ipv6 vrid track 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 undo vrrp ipv6 vrid track 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.

Syntax

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

undo vrrp ipv6 vrid virtual-router-id track [ track-entry-number [ forwarder-switchover | priority reduced | switchover | weight reduced ] ]

Default

An IPv6 VRRP group and the VFs in an IPv6 VRRP group are not associated with any track entry.

Views

Interface view

Predefined user roles

network-admin

Parameters

virtual-router-id: Specifies an IPv6 VRRP group number in the range of 1 to 255.

track-entry-number: Specifies a track entry. The track-entry-number argument is in the range of 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.

Usage guidelines

When the associated track entry changes to the negative state, one of the following conditions occurs, depending on your configuration:

· The priority of the router in the VRRP group decreases by a specific value.

· The weight of VFs decreases by a specific value.

· The router immediately takes over as the master if it is a backup.

· The LVF on the router takes over the role of the AVF at the specified IPv6 address immediately.

Before executing this command, create an IPv6 VRRP group on the interface and assign a virtual IPv6 address to it.

The forwarder-switchover member-ip ipv6-address or weight reduced weight-reduced option takes effect only when the IPv6 VRRP group is operating in load balancing mode.

If the priority reduced keyword is specified but the priority-reduced argument is not specified, the priority of the router in the IPv6 VRRP group decreases by 10 when the track entry changes to negative.

If the weight reduced keyword is specified but the weight-reduced argument is not specified, the weight of the VFs on the router in the IPv6 VRRP group decreases by 30 when the track entry changes to negative.

The weight of a VF is 255, and its lower limit of failure is 10.

IMPORTANT:

· The vrrp ipv6 vrid track priority reduced or vrrp ipv6 vrid track switchover 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.

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-interface2

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

# Associate IPv6 VRRP group 1 on VLAN-interface 2 with track entry 1 and enable the VF in listening state whose AVF is on the member device with the IPv6 address of 11::22 to take over immediately after the specified track entry changes to the negative state.

[Sysname-Vlan-interface2] vrrp ipv6 vrid 1 track 1 forwarder-switchover member-ip 11::22

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

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

Related commands

display vrrp ipv6

10-High Availability Command Reference

VRRP commands

IPv4 VRRP commands

snmp-agent trap enable vrrp

vrrp dscp

vrrp vrid authentication-mode

vrrp vrid preempt-mode

vrrp vrid track

IPv6 VRRP commands

reset vrrp ipv6 statistics

vrrp ipv6 send-nd

vrrp ipv6 vrid track

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