Example for Configuring an mVRRP Group
In this example, an mVRRP group is configured to determine the master/backup status of service VRRP groups bound to it.
Networking Requirements
On the network shown in Figure 1, each CE is dual-homed to two PEs. A VRRP group working in master/backup mode is configured on the PEs. If multiple VRRP groups are configured on the PEs, large numbers of VRRP Advertisement packets are exchanged between them, which consumes a lot of bandwidth and CPU resources. To reduce bandwidth and CPU resource consumption, configure an mVRRP group. The common VRRP groups can join the mVRRP group and become service VRRP groups. The mVRRP group determines the master/backup status of the service VRRP groups.
Interfaces 1 through 5 in this example represent GE 0/1/1, GE 0/1/2, GE 0/1/3, GE 0/1/4, and GE 0/1/5, respectively.
Configuration Roadmap
The configuration roadmap is as follows:
- Assign an IP address to each interface on each PE, configure a routing protocol to ensure IP connectivity on each PE, and configure Layer 2 transparent transmission on CE1 and CE2.
- Create an mVRRP group on each PE.
- Create a VRRP group on each interface connecting a PE to a CE and bind the VRRP groups to the mVRRP group.
Procedure
- Assign an IP address to each interface on each PE and configure OSPF. For details about CE configurations, see Configuration Files in this section.
# Configure PE1.
[~PE1] interface gigabitethernet0/1/1 [~PE1-GigabitEthernet0/1/1] undo shutdown [*PE1-GigabitEthernet0/1/1] ip address 10.10.1.1 24 [*PE1-GigabitEthernet0/1/1] commit [~PE1-GigabitEthernet0/1/1] quit [~PE1] interface gigabitethernet0/1/2 [~PE1-GigabitEthernet0/1/2] undo shutdown [*PE1-GigabitEthernet0/1/2] ip address 10.20.1.1 24 [*PE1-GigabitEthernet0/1/2] commit [~PE1-GigabitEthernet0/1/2] quit [~PE1] interface gigabitethernet0/1/3 [~PE1-GigabitEthernet0/1/3] undo shutdown [*PE1-GigabitEthernet0/1/3] ip address 192.168.1.1 24 [*PE1-GigabitEthernet0/1/3] commit [~PE1-GigabitEthernet0/1/3] quit [~PE1] interface gigabitethernet0/1/4 [~PE1-GigabitEthernet0/1/4] undo shutdown [*PE1-GigabitEthernet0/1/4] ip address 10.10.3.1 24 [*PE1-GigabitEthernet0/1/4] commit [~PE1-GigabitEthernet0/1/4] quit [~PE1] interface gigabitethernet0/1/5 [~PE1-GigabitEthernet0/1/5] undo shutdown [*PE1-GigabitEthernet0/1/5] ip address 10.20.3.1 24 [*PE1-GigabitEthernet0/1/5] commit [~PE1-GigabitEthernet0/1/5] quit [~PE1] ospf [*PE1-ospf-1] area 0 [*PE1-ospf-1-area-0.0.0.0] network 10.10.1.0 0.0.0.255 [*PE1-ospf-1-area-0.0.0.0] network 10.10.3.0 0.0.0.255 [*PE1-ospf-1-area-0.0.0.0] network 10.20.1.0 0.0.0.255 [*PE1-ospf-1-area-0.0.0.0] network 10.20.3.0 0.0.0.255 [*PE1-ospf-1-area-0.0.0.0] network 192.168.1.0 0.0.0.255 [*PE1-ospf-1-area-0.0.0.0] commit [~PE1-ospf-1-area-0.0.0.0] quit [~PE1-ospf-1] quit
# Configure PE2.
[~PE2] interface gigabitethernet0/1/1 [~PE2-GigabitEthernet0/1/1] undo shutdown [*PE2-GigabitEthernet0/1/1] ip address 10.10.1.2 24 [*PE2-GigabitEthernet0/1/1] commit [~PE2-GigabitEthernet0/1/1] quit [~PE2] interface gigabitethernet0/1/2 [~PE2-GigabitEthernet0/1/2] undo shutdown [*PE2-GigabitEthernet0/1/2] ip address 10.20.1.2 24 [*PE2-GigabitEthernet0/1/2] commit [~PE2-GigabitEthernet0/1/2] quit [~PE2] interface gigabitethernet0/1/3 [~PE2-GigabitEthernet0/1/3] undo shutdown [*PE2-GigabitEthernet0/1/3] ip address 192.168.2.1 24 [*PE2-GigabitEthernet0/1/3] commit [~PE2-GigabitEthernet0/1/3] quit [~PE2] interface gigabitethernet0/1/4 [*PE2-GigabitEthernet0/1/4] ip address 10.10.3.2 24 [*PE2-GigabitEthernet0/1/4] commit [~PE2-GigabitEthernet0/1/4] quit [~PE2] interface gigabitethernet0/1/5 [*PE2--GigabitEthernet0/1/5] ip address 10.20.3.2 24 [*PE2--GigabitEthernet0/1/5] commit [~PE2--GigabitEthernet0/1/5] quit [~PE2] ospf [*PE2-ospf-1] area 0 [*PE2-ospf-1-area-0.0.0.0] network 10.10.1.0 0.0.0.255 [*PE2-ospf-1-area-0.0.0.0] network 10.10.3.0 0.0.0.255 [*PE2-ospf-1-area-0.0.0.0] network 10.20.1.0 0.0.0.255 [*PE2-ospf-1-area-0.0.0.0] network 10.20.3.0 0.0.0.255 [*PE2-ospf-1-area-0.0.0.0] network 192.168.2.0 0.0.0.255 [*PE2-ospf-1-area-0.0.0.0] commit [~PE2-ospf-1-area-0.0.0.0] quit [~PE2-ospf-1]quit
- Configure an mVRRP group on the interface of each PE and set a higher VRRP priority for PE1.
# Configure PE1.
[~PE1] interface gigabitethernet0/1/4 [*PE1-GigabitEthernet0/1/4] vrrp vrid 1 virtual-ip 10.10.3.111 [*PE1-GigabitEthernet0/1/4] admin-vrrp vrid 1 [*PE1-GigabitEthernet0/1/4] vrrp vrid 1 priority 120 [*PE1-GigabitEthernet0/1/4] commit [~PE1-GigabitEthernet0/1/4] quit [~PE1] interface gigabitethernet0/1/5 [*PE1-GigabitEthernet0/1/5] vrrp vrid 2 virtual-ip 10.20.3.111 [*PE1-GigabitEthernet0/1/5] admin-vrrp vrid 2 [*PE1-GigabitEthernet0/1/5] vrrp vrid 2 priority 120 [*PE1-GigabitEthernet0/1/5] commit [~PE1-GigabitEthernet0/1/5] quit
# Configure PE2.
[~PE2] interface GigabitEthernet0/1/4 [*PE2-GigabitEthernet0/1/4] vrrp vrid 1 virtual-ip 10.10.3.111 [*PE2-GigabitEthernet0/1/4] admin-vrrp vrid 1 [*PE2-GigabitEthernet0/1/4] commit [~PE2-GigabitEthernet0/1/4] quit [~PE2] interface gigabitethernet0/1/5 [*PE2-GigabitEthernet0/1/5] vrrp vrid 2 virtual-ip 10.20.3.111 [*PE2-GigabitEthernet0/1/5] admin-vrrp vrid 2 [*PE2-GigabitEthernet0/1/5] commit [~PE2-GigabitEthernet0/1/5] quit
- Create a VRRP group on the interface connecting each PE to the CE and bind the VRRP groups to the mVRRP group, allowing the mVRRP group to determine the master/backup status of these service VRRP groups.
# Configure PE1.
[~PE1] interface gigabitethernet0/1/1 [~PE1-GigabitEthernet0/1/1] vrrp vrid 10 virtual-ip 10.10.1.111 [*PE1-GigabitEthernet0/1/1] vrrp vrid 10 track admin-vrrp interface gigabitethernet0/1/4 vrid 1 unflowdown [*PE1-GigabitEthernet0/1/1] commit [~PE1-GigabitEthernet0/1/1] quit [~PE1] interface gigabitethernet0/1/2 [~PE1-GigabitEthernet0/1/2] vrrp vrid 20 virtual-ip 10.20.1.111 [*PE1-GigabitEthernet0/1/2] vrrp vrid 20 track admin-vrrp interface gigabitethernet0/1/5 vrid 2 unflowdown [*PE1-GigabitEthernet0/1/2] commit [~PE1-GigabitEthernet0/1/2] quit
# Configure PE2.
[~PE2] interface gigabitethernet0/1/1 [~PE2-GigabitEthernet0/1/1] vrrp vrid 10 virtual-ip 10.10.1.111 [*PE2-GigabitEthernet0/1/1] vrrp vrid 10 track admin-vrrp interface gigabitethernet0/1/4 vrid 1 unflowdown [*PE2-GigabitEthernet0/1/1] commit [~PE2-GigabitEthernet0/1/1] quit [~PE2] interface gigabitethernet0/1/2 [~PE2-GigabitEthernet0/1/2] vrrp vrid 20 virtual-ip 10.20.1.111 [*PE2-GigabitEthernet0/1/2] vrrp vrid 20 track admin-vrrp interface gigabitethernet0/1/5 vrid 2 unflowdown [*PE2-GigabitEthernet0/1/2] commit [~PE2-GigabitEthernet0/1/2] quit
- Verify the configuration.
After completing the configurations, run the display vrrp brief command on each PE.
The command output on PE1 is as follows:In mVRRP group 1 and 2, the value of the State field is Master and the value of the Type field is Admin.
In each service VRRP group, the value of the State field is Master and the value of the Type field is Member.
[~PE1] display vrrp brief Total:3 Master:3 Backup:0 Non-active:0 VRID State Interface Type Virtual IP -------------------------------------------------------- 1 Master GE0/1/4 Admin 10.10.3.111 2 Master GE0/1/5 Admin 10.20.3.111 10 Master GE0/1/1 Member 10.10.1.111 20 Master GE0/1/2 Member 10.20.1.111
The command output on PE2 is as follows:In mVRRP group 1 and 2, the value of the State field is Backup and the value of the Type field is Admin.
In each service VRRP group, the value of the State field is Backup and the value of the Type field is Member.
[~PE2] display vrrp brief Total:3 Master:0 Backup:3 Non-active:0 VRID State Interface Type Virtual IP -------------------------------------------------------- 1 Backup GE0/1/4 Admin 10.10.3.111 2 Backup GE0/1/5 Admin 10.20.3.111 10 Backup GE0/1/1 Member 10.10.1.111 20 Backup GE0/1/2 Member 10.20.1.111
Run the shutdown command on GE 0/1/1, GE 0/1/2, GE 0/1/4, and GE 0/1/5 of PE1 to simulate a device fault.
Then the mVRRP group performs a master/backup VRRP switchover. Run the display vrrp command on each PE.
The command output on PE1 is as follows:In mVRRP group 1 and 2, the value of the State field is Initialize and the value of the Type field is Admin.
In each service VRRP group, the value of the State field is Initialize and the value of the Type field is Member.
[~PE1] display vrrp brief Total:3 Master:0 Backup:0 Non-active:3 VRID State Interface Type Virtual IP -------------------------------------------------------- 1 Initialize GE0/1/4 Admin 10.10.3.111 2 Initialize GE0/1/5 Admin 10.20.3.111 10 Initialize GE0/1/1 Member 10.10.1.111 20 Initialize GE0/1/2 Member 10.20.1.111
The command output on PE2 is as follows:In mVRRP group 1 and 2, the value of the State field is Master and the value of the Type field is Admin.
In each service VRRP group, the value of the State field is Master and the value of the Type field is Member.
[~PE2] display vrrp brief Total:3 Master:3 Backup:0 Non-active:0 VRID State Interface Type Virtual IP -------------------------------------------------------- 1 Master GE0/1/4 Admin 10.10.3.111 2 Master GE0/1/5 Admin 10.20.3.111 10 Master GE0/1/1 Member 10.10.1.111 20 Master GE0/1/2 Member 10.20.1.111
Run the undo shutdown command on GE 0/1/1, GE 0/1/2, GE 0/1/4, and GE 0/1/5 of PE1 to restore PE1.
A VRRP switchback is performed and the VRRP status of each PE in each VRRP group is restored. Run the display vrrp command on each PE.
The command output on PE1 is as follows:In mVRRP group 1 and 2, the value of the State field is Master and the value of the Type field is Admin.
In each service VRRP group, the value of the State field is Master and the value of the Type field is Member.
[~PE1] display vrrp brief Total:3 Master:3 Backup:0 Non-active:0 VRID State Interface Type Virtual IP -------------------------------------------------------- 1 Master GE0/1/4 Admin 10.10.3.111 1 Master GE0/1/5 Admin 10.20.3.111 10 Master GE0/1/1 Member 10.10.1.111 20 Master GE0/1/2 Member 10.20.1.111
The command output on PE2 is as follows:In mVRRP group 1 and 2, the value of the State field is Backup and the value of the Type field is Admin.
In each service VRRP group, the value of the State field is Backup and the value of the Type field is Member.
[~PE2] display vrrp brief Total:3 Master:0 Backup:3 Non-active:0 VRID State Interface Type Virtual IP -------------------------------------------------------- 1 Backup GE0/1/4 Admin 10.10.3.111 1 Backup GE0/1/5 Admin 10.20.3.111 10 Backup GE0/1/1 Member 10.10.1.111 20 Backup GE0/1/2 Member 10.20.1.111
Configuration Files
PE1 configuration file
# sysname PE1 # interface GigabitEthernet0/1/1 undo shutdown ip address 10.10.1.1 255.255.255.0 vrrp vrid 10 virtual-ip 10.10.1.111 vrrp vrid 10 track admin-vrrp interface gigabitethernet0/1/4 vrid 1 unflowdown # interface GigabitEthernet0/1/2 undo shutdown ip address 10.20.1.1 255.255.255.0 vrrp vrid 20 virtual-ip 10.20.1.111 vrrp vrid 20 track admin-vrrp interface gigabitethernet0/1/5 vrid 2 unflowdown # interface GigabitEthernet0/1/3 undo shutdown ip address 192.168.1.1 255.255.255.0 # interface GigabitEthernet0/1/4 undo shutdown ip address 10.10.3.1 255.255.255.0 vrrp vrid 1 virtual-ip 10.10.3.111 admin-vrrp vrid 1 vrrp vrid 1 priority 120 # interface GigabitEthernet0/1/5 undo shutdown ip address 10.20.3.1 255.255.255.0 vrrp vrid 2 virtual-ip 10.20.3.111 admin-vrrp vrid 2 vrrp vrid 2 priority 120 # ospf 1 area 0.0.0.0 network 10.10.1.0 0.0.0.255 network 10.10.3.0 0.0.0.255 network 10.20.1.0 0.0.0.255 network 10.20.3.0 0.0.0.255 network 192.168.1.0 0.0.0.255 # return
PE2 configuration file
# sysname PE2 # interface GigabitEthernet0/1/1 undo shutdown ip address 10.10.1.1 255.255.255.0 vrrp vrid 10 virtual-ip 10.10.1.111 vrrp vrid 10 track admin-vrrp interface gigabitethernet0/1/4 vrid 1 unflowdown # interface GigabitEthernet0/1/2 undo shutdown ip address 10.20.1.1 255.255.255.0 vrrp vrid 20 virtual-ip 10.20.1.111 vrrp vrid 20 track admin-vrrp interface gigabitethernet0/1/5 vrid 2 unflowdown # interface GigabitEthernet0/1/3 undo shutdown ip address 192.168.2.1 255.255.255.0 # interface GigabitEthernet0/1/4 ip address 10.10.3.2 255.255.255.0 vrrp vrid 1 virtual-ip 10.10.3.111 admin-vrrp vrid 1 # interface GigabitEthernet0/1/5 ip address 10.20.3.2 255.255.255.0 vrrp vrid 2 virtual-ip 10.20.3.111 admin-vrrp vrid 2 # ospf 1 area 0.0.0.0 network 10.10.1.0 0.0.0.255 network 10.10.3.0 0.0.0.255 network 10.20.1.0 0.0.0.255 network 10.20.3.0 0.0.0.255 network 192.168.2.0 0.0.0.255 # return
CE1 configuration file
# sysname CE1 # vlan batch 10 20 # interface GigabitEthernet0/1/1 undo shutdown port default vlan 10 # interface gigabitethernet0/1/2 undo shutdown port default vlan 10 # interface gigabitethernet0/1/3 undo shutdown port default vlan 20 # interface gigabitethernet0/1/4 undo shutdown port default vlan 20 # return
CE2 configuration file
# sysname CE2 # vlan batch 10 20 # interface GigabitEthernet0/1/1 undo shutdown portswitch port default vlan 10 # interface gigabitethernet0/1/2 undo shutdown port default vlan 10 # interface gigabitethernet0/1/3 undo shutdown portswitch port default vlan 20 # interface gigabitethernet0/1/4 undo shutdown portswitch port default vlan 20 # return