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| Title | Size | Download |
|---|---|---|
| 12-VSRP commands | 114.74 KB |
VSRP commands
VSRP is supported only in R1115 or later.
VSRP peer commands
display vsrp peer
Use display vsrp peer to display VSRP group information.
Syntax
display vsrp peer [ peer-name ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
peer-name: Specifies a VSRP group by its name, a case-sensitive string of 1 to 31 characters. If you do not specify a VSRP group, this command displays information about all VSRP groups.
Examples
# Display information about VSRP group pname.
<Sysname> display vsrp peer pname
VSRP peer name: pname
TCP status: Connected
Peer IP: 11.0.0.3
Local IP: 10.0.0.3
Port: 6000
Track ID: 5
Track status: Positive
# Display information about all VSRP groups.
<Sysname> display vsrp peer
VSRP peer name: pname1
TCP status: Connected
Peer IP: 11.0.0.3
Local IP: 10.0.0.3
Port: 6000
Track ID: 5
Track status: Positive
VSRP peer name: pname2
TCP status: Disconnected
Peer IP: 10.0.0.2
Local IP: 11.0.0.2
Port: 5000
Track ID: 5
Track status: Negative
Table 1 Command output
|
Field |
Description |
|
VSRP peer name |
Name of a VSRP group. |
|
TCP status |
TCP control channel state: Connected or Disconnected. |
|
Peer IP |
Peer IP address for VSRP channels. |
|
Local IP |
Local IP address for VSRP channels. |
|
Port |
Port number for the TCP control channel. |
|
Track ID |
ID of the track entry associated with the VSRP group. |
|
Track status |
Track entry state: · Positive. · NotReady. · Negative. |
peer
Use peer to configure the IPv4 TCP parameters for establishing VSRP channels to the peer.
Use undo peer to restore the default.
Syntax
peer peer-ip-address local local-ip-address [ port port-id ]
undo peer
Default
No IPv4 VSRP channels are established to the peer.
Views
VSRP peer view
Predefined user roles
network-admin
Parameters
peer-ip-address: Specifies the IPv4 address of the peer.
local local-ip-address: Specifies the IPv4 address of the local device.
port port-id: Specifies the TCP port number for establishing the control channel. The value range is 1024 to 65535 and the default is 60032. The specified port number cannot be one that is in use.
Usage guidelines
You must specify different unicast IPv4 addresses for the peer device and the local device in a VSRP group. The IPv4 addresses cannot be all zeros or loopback addresses.
If you have multiple VSRP groups, make sure their IP address pairs are unique.
To change the TCP parameters for VSRP channel establishment, first execute the undo form of the command to remove the existing IPv4 VSRP channels.
Examples
# Specify channel establishment parameters for VSRP group pname. Set the local IPv4 address to 11.0.0.2, the peer IPv4 address to 10.0.0.1, and the TCP port number for the control channel to 7000.
<Sysname> system-view
[Sysname] vsrp peer pname
[Sysname-vsrp-peer-pname] peer 10.0.0.1 local 11.0.0.2 port 7000
peer ipv6
Use peer ipv6 to configure the IPv6 TCP parameters for establishing VSRP channels to the peer.
Use undo peer ipv6 to restore the default.
Syntax
peer ipv6 peer-ipv6-address local local-ipv6-address [ port port-id ]
undo peer ipv6
Default
No IPv6 VSRP channels are established to the peer.
Views
VSRP peer view
Predefined user roles
network-admin
Parameters
peer-ipv6-address: Specifies the IPv6 address of the peer.
local local-ipv6-address: Specifies the IPv6 address of the local device.
port port-id: Specifies the TCP port number for establishing the control channel. The value range is 1024 to 65535 and the default is 60032. The specified port number cannot be one that is in use.
Usage guidelines
You must specify different IPv6 unicast addresses for the peer device and the local device in a VSRP group. The IPv6 addresses cannot be all zeros or loopback addresses.
If you have multiple VSRP groups, make sure their IP address pairs are unique.
The specified IP addresses are also used to establish data channels. You can specify TCP ports for establishing data channels by service type in system view.
To change the TCP parameters for VSRP channel establishment, first execute the undo form of the command to remove the existing IPv4 VSRP channels.
Examples
# Specify the channel establishment parameters for VSRP group pname. Set the local IPv6 address to 1::1, the peer IPv6 address to 2::2, and the TCP port number for the control channel to 7000.
<Sysname> system-view
[Sysname] vsrp peer pname
[Sysname-vsrp-peer-pname] peer ipv6 2::2 local 1::1 port 7000
track
Use track to associate a VSRP group with a track entry.
Use undo track to restore the default.
Syntax
track track-entry-number
undo track
Default
A VSRP group is not associated with any track entry.
Views
VSRP peer view
Predefined user roles
network-admin
Parameters
track-entry-number: Specifies a track entry by its number in the range of 1 to 1024.
Usage guidelines
By default, a VSRP group can detect the state of the failover link based only on the state of the TCP control channel.
You can associate a VSRP group with a track entry to identify the state of the failover link.
· When the track entry is in Positive or NotReady state, a device in the VSRP group attempts to establish a TCP control channel to the peer.
· When the track entry changes to Negative state, the device terminates the TCP control channel.
A VSRP group takes effect only when a TCP control channel is established.
For more information about track entries, see High Availability Configuration Guide.
Examples
# Associate VSRP group pname with track entry 10.
<Sysname> system-view
[Sysname] vsrp peer pname
[Sysname-vsrp-peer-pname] track 10
vsrp peer
Use vsrp peer to create a VSRP group and enter VSRP peer view, or enter the VSRP peer view of an existing VSRP group.
Use undo vsrp peer to remove a VSRP group.
Syntax
vsrp peer peer-name
undo vsrp peer peer-name
Default
No VSRP groups exist.
Views
System view
Predefined user roles
network-admin
Parameters
peer-name: Specifies a VSRP group by its name, a case-sensitive string of 1 to 31 characters.
Usage guidelines
You can create a maximum of 64 VSRP groups on the device.
If a VSRP instance exists on a VSRP group, you must use the undo backup id command to remove that VSRP instance before you can remove the VSRP group.
Examples
# Create a VSRP group named pname and enter VSRP peer view.
<Sysname> system-view
[Sysname] vsrp peer pname
[Sysname-vsrp-peer-pname]
VSRP instance commands
backup id
Use backup id to specify a backup ID for a VSRP instance.
Use undo backup id to restore the default.
Syntax
backup id backup-id peer peer-name
undo backup id
Default
A VSRP instance has no backup ID.
Views
VSRP instance view
Predefined user roles
network-admin
Parameters
backup-id: Specifies a VSRP instance by its backup ID in the range of 1 to 1024.
peer-name: Specifies a VSRP group by its name, a case-sensitive string of 1 to 31 characters.
Usage guidelines
A VSRP instance can be associated with only one VSRP group. The backup ID uniquely identifies a VSRP instance in a VSRP group.
You must specify the same backup ID for a VSRP instance on both devices in a VSRP group.
When you specify a backup ID for a VSRP instance, make sure the following conditions are met:
· The associated VSRP group already exists.
· The backup ID is unique in the VSRP group.
To specify a new backup ID for a VSRP instance, first execute the undo form of the command to remove the existing backup ID setting.
Examples
# Specify the backup ID of VSRP instance aaa as 5 in VSRP group pname.
<Sysname> system-view
[Sysname] vsrp instance aaa
[Sysname-vsrp-instance-aaa] backup id 5 peer pname
backup mode
Use backup mode to set the backup mode for a VSRP instance.
Use undo backup mode to restore the default.
Syntax
backup mode { hot | warm }
undo backup mode
Default
A VSRP instance operates in hot backup mode.
Views
VSRP instance view
Predefined user roles
network-admin
Parameters
hot: Specifies hot backup mode.
warm: Specifies warm backup mode.
Usage guidelines
In hot backup mode, the backup device issues backup information to the data plane immediately upon receiving the information from the master. This allows the VSRP instance to perform a fast master and backup switchover to enable the backup to forward packets when the master fails.
In warm backup mode, the backup device does not issue received backup information to the data plane immediately. When the master fails and a switchover occurs, the backup begins to set backup information to the data plane. As a result, the switchover takes longer in warm backup mode than in hot backup mode.
Examples
# Set VSRP instance aaa to operate in warm backup mode.
<Sysname> system-view
[Sysname] vsrp instance aaa
[Sysname-vsrp-instance-aaa] backup mode warm
bind vrrp ipv6 vrid
Use bind vrrp ipv6 vrid to bind a VSRP instance to an IPv6 VRRP group.
Use undo bind vrrp ipv6 to restore the default.
Syntax
bind vrrp ipv6 vrid virtual-router-id interface interface-type interface-number
undo bind vrrp ipv6
Default
A VSRP instance is not bound to any IPv6 VRRP group.
Views
VSRP instance 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.
interface interface-type interface-number: Specifies an interface by its type and number.
Usage guidelines
A VSRP instance is bound to an IPv6 VRRP group to determine the device role (master or backup) in a VSRP group.
You can bind a VSRP instance to only one IPv6 VRRP group. The IPv6 VRRP group can be on any interface.
Examples
# Bind VSRP instance aaa to IPv6 VRRP group 2 on GigabitEthernet 1/0/1.
<Sysname> system-view
[Sysname] vsrp instance aaa
[Sysname-vsrp-instance-aaa] bind vrrp ipv6 vrid 2 interface gigabitethernet 1/0/1
bind vrrp vrid
Use bind vrrp vrid to bind a VSRP instance to an IPv4 VRRP group.
Use undo bind vrrp to restore the default.
Syntax
bind vrrp vrid virtual-router-id interface interface-type interface-number
undo bind vrrp
Default
A VSRP instance is not bound to any IPv4 VRRP group.
Views
VSRP instance 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 interface-type interface-number: Specifies an interface by its type and number.
Usage guidelines
A VSRP instance is bound to an IPv4 VRRP group to determine the device role (master or backup) in a VSRP group.
You can bind a VSRP instance to only one IPv4 VRRP group. The IPv4 VRRP group can be on any interface.
Examples
# Bind VSRP instance aaa to IPv4 VRRP group 2 on GigabitEthernet 1/0/1.
<Sysname> system-view
[Sysname] vsrp instance aaa
[Sysname-vsrp-instance-aaa] bind vrrp vrid 2 interface gigabitethernet 1/0/1
display vsrp instance
Use display vsrp instance to display VSRP instance information.
Syntax
display vsrp instance [ instance-name ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
instance-name: Specifies a VSRP instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify a VSRP instance, this command displays information about all VSRP instances.
Examples
# Display information about VSRP instance aaa.
<Sysname> display vsrp instance aaa
VSRP instance name: aaa
VSRP peer name: pname1
Backup ID: 10
Bound VRID: VRRP VRID 1 interface GigabitEthernet1/0/1
Instance status: Master
Local status: Master
Peer status: Backup
Backup mode: Warm
Traffic backup interval: 10(minutes)
Traffic backup threshold: 50(MB)
NAS IP: 10.0.0.1
NAS port: GigabitEthernet1/0/2
NAS ID: h3c
# Display information about all VSRP instances.
<Sysname> display vsrp instance
VSRP instance name: aaa
VSRP peer name: pname1
Backup ID: 10
Bound VRID: VRRP VRID 1 interface GigabitEthernet1/0/1
Instance status : Master
Local status: Master
Peer status: Backup
Backup mode: Warm
Traffic backup interval: 10(minutes)
Traffic backup threshold: 50(MB)
NAS IP: 10.0.0.1
NAS port: GigabitEthernet1/0/2
NAS ID: h3c
VSRP instance name: bbb
VSRP peer name: pname2
Backup ID: 10
Bound VRID: VRRP VRID 2 interface GigabitEthernet1/0/3
Instance status : Master
Local status: Master
Peer status: Backup
Backup mode: Warm
Traffic backup interval: 5(minutes)
Traffic backup threshold: 100(MB)
NAS IP: 10.0.0.2
NAS port: GigabitEthernet1/0/4
NAS ID: h3c
Table 2 Command output
|
Field |
Description |
|
VSRP peer name |
Name of a VSRP group associated with the VSRP instance. |
|
Bound VRID |
Number of the VRRP group bound to the VSRP instance. |
|
Instance status |
VSRP instance state: · Master—The device acts as the master in the VSRP instance. · Backup—The device acts as the backup in the VSRP instance. · Down—The device is not running in the VSRP instance. |
|
Local status |
Local device state: · Master—The local device is acting as the master. · Backup—The local device is acting as the backup. · Init—The local device is in initialized state. · Down—The state of the local device is unknown. |
|
Peer status |
Peer state: · Master—The peer is acting as the master. · Backup—The peer is acting as the backup. · Init—The peer is in initialized state. · Down—The state of the peer is unknown. |
|
Backup mode |
VSRP instance backup mode: Hot or Warm. |
|
Traffic backup threshold |
Traffic threshold that triggers a traffic backup. |
|
NAS IP |
Logical NAS IP address. |
|
NAS port |
Logical NAS port. |
|
NAS ID |
Logical host name. |
nas
Use nas to configure NAS parameters.
Use undo nas to remove the NAS parameters.
Syntax
nas { id host-name | ip ip-address | port interface-type interface-number }
undo nas [ id | ip | port ]
Default
No NAS parameters are configured.
Views
VSRP instance view
Predefined user roles
network-admin
Parameters
id host-name: Specifies a logical host name, a case-insensitive string of 1 to 127 characters.
ip ip-address: Specifies a logical unicast IP address. The IP address cannot be all zeros or a loopback address.
port interface-type interface-number: Specifies a logical interface by its type and number. It can be a Layer 3 Ethernet interface or a Layer 3 aggregate interface. The logical interface can be an interface that does not belong to the device. Make sure the logical interface number contains three segments in interface-type A/B/C format.
Usage guidelines
This command specifies NAS parameters for outgoing packets. This command enables devices in a VSRP group to share parameters when the devices have the following settings:
· The same NAS-IP-address, NAS-Port, and host name in packets sent to the RADIUS server.
· The same Option 82 in packets sent to the DHCP server.
In this way, the VSRP group is not required to be authenticated again after a master and backup switchover.
Examples
# Specify the logical IP address as 2.2.2.2.
<Sysname> system-view
[Sysname] vsrp instance aaa
[Sysname-vsrp-instance-aaa] nas ip 2.2.2.2
# Specify the logical interface as GigabitEthernet 1/0/1.
<Sysname> system-view
[Sysname] vsrp instance aaa
[Sysname-vsrp-instance-aaa] nas port gigabitethernet 1/0/1
# Specify the logical host name as bbb.
<Sysname> system-view
[Sysname] vsrp instance aaa
[Sysname-vsrp-instance-aaa] nas id bbb
traffic backup
Use traffic backup to set a traffic backup interval or a traffic threshold that triggers a traffic backup.
Use undo traffic backup to remove the specified traffic backup interval or traffic threshold settings.
Syntax
traffic backup { interval interval-value | threshold threshold-value } *
undo traffic backup [ interval | threshold ]
Default
A VSRP instance backs up traffic at an interval of 10 minutes or when the traffic reaches 50 MB.
Views
VSRP instance view
Predefined user roles
network-admin
Parameters
interval interval-value: Specifies a traffic backup interval in the range of 0 to 1440 minutes.
threshold threshold-value: Specifies a traffic threshold that triggers a traffic backup. The value range for the threshold-value argument is 0 to 100000 MB.
Usage guidelines
A VSRP instance backs up service data at the specified interval or when the specified traffic threshold is reached.
If traffic is not required to be backed up, set both the interval-value argument and the threshold-value argument to 0.
Examples
# Configure VSRP instance aaa to back up traffic every 50 minutes.
<Sysname> system-view
[Sysname] vsrp instance aaa
[Sysname-vsrp-instance-aaa] traffic backup interval 50
# Configure VSRP instance aaa to back up traffic when the traffic reaches 200 MB.
<Sysname> system-view
[Sysname] vsrp instance aaa
[Sysname-vsrp-instance-aaa] traffic backup threshold 200
# Set the traffic backup interval and the traffic threshold to the default value for VSRP instance aaa.
<Sysname> system-view
[Sysname] vsrp instance aaa
[Sysname-vsrp-instance-aaa] undo traffic backup
vsrp instance (system view)
Use vsrp instance to create a VSRP instance and enter its view, or enter the view of an existing VSRP instance.
Use undo vsrp instance to remove a VSRP instance.
Syntax
vsrp instance instance-name
undo vsrp instance instance-name
Default
No VSRP instances exist.
Views
System view
Predefined user roles
network-admin
Parameters
instance-name: Specifies a VSRP instance by its name, a case-sensitive string of 1 to 31 characters.
Usage guidelines
A VSRP instance is associated with a service module. To enable a VSRP instance to function, you must configure the following items for the VSRP instance:
· A VSRP group.
· A bound VRRP group.
· The backup mode.
· The traffic backup interval or traffic threshold.
The device supports a maximum of 1024 VSRP instances.
Examples
# Create a VSRP instance named aaa, and enter VSRP instance view.
<Sysname> system-view
[Sysname] vsrp instance aaa
[Sysname-vsrp-instance-aaa]
IPv6 virtual address commands
ipv6 virtual-address
Use ipv6 virtual-address to specify a virtual IPv6 address for an interface that is associated with a VSRP instance.
Use undo ipv6 virtual-address to restore the default.
Syntax
ipv6 virtual-address ipv6-address vsrp vsrp-instance
undo ipv6 virtual-address
Default
No virtual IPv6 address is configured.
Views
Layer 3 Ethernet interface view
Layer 3 aggregate interface view
VLAN interface view
Predefined user roles
network-admin
Parameters
ipv6-address: Specifies a virtual IPv6 address. The virtual IPv6 address must be a link local address that can be used as the gateway address by hosts in a LAN.
vsrp vsrp-instance: Specifies a VSRP instance by its name, a case-sensitive string of 1 to 31 characters.
Usage guidelines
Use this command when you enable VSRP for IPv6 IPoE or DHCPv6 services on an interface. For VSRP to operate correctly, specify the same VSRP instance in this command and in the ipv6 subscriber vsrp-instance or the ipv6 dhcp vsrp-instance command. If different VSRP instances are specified, the hosts in the LAN cannot access the Internet after a master and backup switchover.
For the original link local address of the device to take effect, do not use this command when VSRP is disabled for IPv6 IPoE or DHCPv6 on the interface.
To enable VSRP to operate correctly, do not use this command on the same interface where a VRRP group is configured.
Examples
# Specify virtual IPv6 address fe80::10 for GigabitEthernet 1/0/1 that is associated with VSRP instance aaa.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[Sysname-GigabitEthernet1/0/1] ipv6 virtual-address fe80::10 vsrp aaa
DHCP VSRP commands
dhcp vsrp port
Use dhcp vsrp port to specify a TCP port number for VSRP to establish data channels for DHCPv4 server or relay agent service backup.
Use undo dhcp vsrp port to restore the default.
Syntax
dhcp vsrp port port-number
undo dhcp vsrp port
Default
TCP port 60037 is used to establish data channels for DHCPv4 server or relay agent service backup.
Views
System view
Predefined user roles
network-admin
Parameters
port-number: Specifies a TCP port number in the range of 1 to 65535. The TCP port cannot be used by other services or be a well-known port.
Usage guidelines
To back up data for a DHCPv4 address pool, the master DHCPv4 server must establish a TCP data channel with the backup DHCPv4 server.
To back up DHCPv4 relay agent data for a client-side interface, the master DHCPv4 relay agent must establish a TCP data channel with the backup DHCPv4 relay agent.
You can use this command to change the TCP port number for establishing the data channel.
Examples
# Specify TCP port 30000 for VSRP to establish data channels for DHCPv4 server or relay agent service backup.
<Sysname> system-view
[Sysname] dhcp vsrp port 30000
dhcp vsrp-instance
Use dhcp vsrp-instance to associate a client-side interface on the DHCPv4 server with a VSRP instance.
Use undo dhcp vsrp-instance to remove the VSRP instance association.
Syntax
dhcp vsrp-instance vsrp-instance-name
undo dhcp vsrp-instance
Default
The client-side interfaces on the DHCPv4 server are not associated with VSRP instances.
Views
Layer 3 Ethernet interface view
Layer 3 aggregate interface view
Predefined user roles
network-admin
Parameters
vsrp-instance-name: Specifies a VSRP instance by its name, a case-sensitive string of 1 to 31 characters.
Usage guidelines
You can specify a nonexistent VSRP instance for this command, but this command takes effect only after the VSRP instance is created.
Use this command on the master and backup DHCPv4 servers to match their interfaces that connect to the same client.
You can associate an interface with only one VSRP instance.
You can associate a VSRP instance with one interface. If a VSRP instance has been associated with one interface, you must remove the VSRP instance from that interface before you can specify it on another interface.
Examples
# Associate GigabitEthernet 1/0/1 with VSRP instance vsrp1.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[Sysname-GigabitEthernet1/0/1] dhcp vsrp-instance vsrp1
ipv6 dhcp vsrp port
Use ipv6 dhcp vsrp port to specify a TCP port number for VSRP to establish data channels for DHCPv6 server or relay agent service backup.
Use undo ipv6 dhcp vsrp port to restore the default.
Syntax
ipv6 dhcp vsrp port port-number
undo ipv6 dhcp vsrp port
Default
TCP port 60039 is used to establish data channels for DHCPv6 server or relay agent service backup.
Views
System view
Predefined user roles
network-admin
Parameters
port-number: Specifies a TCP port number in the range of 1 to 65535. The TCP port cannot be used by other services or be a well-known port.
Usage guidelines
To back up data for a DHCPv6 address pool, the master DHCPv6 server must establish a TCP data channel with the backup DHCPv6 server.
To back up DHCPv6 relay agent data for a client-side interface, the master DHCPv6 relay agent must establish a TCP data channel with the backup DHCPv6 relay agent.
You can use this command to change the TCP port number for establishing the data channel.
Examples
# Specify TCP port 30000 for VSRP to establish data channels for DHCPv6 server or relay agent service backup.
<Sysname> system-view
[Sysname] ipv6 dhcp vsrp port 30000
ipv6 dhcp vsrp-instance
Use ipv6 dhcp vsrp-instance to associate a client-side interface on the DHCPv6 server with a VSRP instance.
Use undo ipv6 dhcp vsrp-instance to remove the VSRP instance association.
Syntax
ipv6 dhcp vsrp-instance vsrp-instance-name
undo ipv6 dhcp vsrp-instance
Default
The client-side interfaces on the DHCPv6 server are not associated with VSRP instances.
Views
Layer 3 Ethernet interface view
Layer 3 aggregate interface view
Predefined user roles
network-admin
Parameters
vsrp-instance-name: Specifies a VSRP instance by its name, a case-sensitive string of 1 to 31 characters.
Usage guidelines
You can specify a nonexistent VSRP instance for this command, but this command takes effect only after the VSRP instance is created.
Use this command on the master and backup DHCPv6 servers to match their interfaces that connect to the same client.
You can associate an interface with only one VSRP instance.
You can associate a VSRP instance with one interface. If a VSRP instance has been associated with one interface, you must remove the VSRP instance from that interface before you can specify it on another interface.
Examples
# Associate GigabitEthernet 1/0/1 with VSRP instance vsrp1.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[Sysname-GigabitEthernet1/0/1] ipv6 dhcp vsrp-instance vsrp1
virtual-duid
Use virtual-duid to generate a virtual DUID for a DHCPv6 server.
Use undo virtual-duid to restore the default.
Syntax
virtual-duid { enterprise-number enterprise-number identifier identifier | hardware-type hardware-type address address }
undo virtual-duid
Default
No virtual DUID is generated for a DHCPv6 server.
Views
DHCPv6 address pool view
Predefined user role
network-admin
Parameters
enterprise-number enterprise-number: Specifies a registered private enterprise number. The value range for the enterprise-number argument is 0 to 4294967295.
identifier identifier: Specifies a device identifier in hexadecimal format. The number of hexadecimal digits must be an even number between 2 and 128.
hardware-type hardware-type: Specifies the hardware type, a number in the range of 0 to 65535.
address address: Specifies a link layer address in hexadecimal format. The number of hexadecimal digits must be an even number between 2 to 128.
Usage guidelines
By default, the master and backup DHCPv6 servers use their respective DUIDs for DHCP communication. For DHCPv6 clients to correctly renew leases or release IPv6 addresses after a switchover, use this command to generate the same virtual DUID for the master and the backup.
Examples
# Configure DHCPv6 address pool pool1 to use the virtual DUID generated based on enterprise number 1 and identifier 1234.
<Sysname> system-view
[Sysname] ipv6 dhcp pool pool1
[Sysname-dhcp6-pool-pool1] virtual-duid enterprise-number 1 identifier 1234
vsrp-instance (DHCPv4/DHCPv6 address pool view)
Use vsrp-instance to associate a DHCPv4 or DHCPv6 address pool with a VSRP instance.
Use undo vsrp-instance to remove the VSRP instance association.
Syntax
vsrp-instance vsrp-instance-name
undo vsrp-instance
Default
A DHCPv4 or DHCPv6 address pool is not associated with a VSRP instance.
Views
DHCPv4 or DHCPv6 address pool view
Predefined user roles
network-admin
Parameters
vsrp-instance-name: Specifies a VSRP instance by its name, a case-sensitive string of 1 to 31 characters.
Usage guidelines
When you execute this command, the master and backup DHCPv4 or DHCPv6 servers establish a data channel to back up address pool data.
You can specify a nonexistent VSRP instance, but this command takes effect only when the specified VSRP instance exists.
Examples
# Associate DHCPv4 address pool p1 with VSRP instance vsrp1.
<Sysname> system-view
[Sysname] dhcp server ip-pool p1
[Sysname-dhcp-pool-p1] vsrp-instance vsrp1
# Associate DHCPv6 address pool p1 with VSRP instance vsrp1.
<Sysname> system-view
[Sysname] ipv6 dhcp pool p1
[Sysname-dhcp6-pool-p1] vsrp-instance vsrp1
