VRRP-Track-interface management collaboration configuration example

As shown in Figure 40:

• Host A requires access to Host B. The default gateway of Host A is 10.1.1.10/24.

• Router A and Router B belong to VRRP group 1. The virtual IP address of VRRP group 1 is 10.1.1.10.

Configure VRRP-Track-interface management collaboration to monitor the uplink interface on the master and meet the following requirements:

• When Router A operates correctly, Router A forwards packets from Host A to Host B.

• When VRRP detects a fault on the uplink interface of Router A through the interface management module, Router B forwards packets from Host A to Host B.

1. Configure the IP address of each interface, as shown in Figure 40. (Details not shown.)

2. Configure Router A:

   # Configure track entry 1, and associate it with the link status of the uplink interface (GigabitEthernet 1/0/2).

   [RouterA] track 1 interface gigabitethernet 1/0/2
   [RouterA-track-1] quit
   

   # Create VRRP group 1, and configure virtual IP address 10.1.1.10 for the group.

   [RouterA] interface gigabitethernet 1/0/1
   [RouterA-GigabitEthernet1/0/1] vrrp vrid 1 virtual-ip 10.1.1.10
   

   # Set the priority of Router A to 110 in VRRP group 1.

   [RouterA-GigabitEthernet1/0/1] vrrp vrid 1 priority 110
   

   # Associate VRRP group 1 with track entry 1 and decrease the router priority by 30 when the state of track entry 1 changes to negative.

   [RouterA-GigabitEthernet1/0/1] vrrp vrid 1 track 1 priority reduced 30
   

3. On Router B, create VRRP group 1, and configure virtual IP address 10.1.1.10 for the group.

   <RouterB> system-view
   [RouterB] interface gigabitethernet 1/0/1
   [RouterB-GigabitEthernet1/0/1] vrrp vrid 1 virtual-ip 10.1.1.10
   

# Ping Host B from Host A to verify that Host B is reachable. (Details not shown.)

# Display detailed information about VRRP group 1 on Router A.

[RouterA-GigabitEthernet1/0/1] display vrrp verbose
IPv4 Virtual Router Information:
 Running Mode      : Standard
 Total number of virtual routers : 1
   Interface GigabitEthernet1/0/1
     VRID           : 1               Adver Timer  : 100
     Admin Status   : Up              State        : Master
     Config Pri     : 110             Running Pri  : 110
     Preempt Mode   : Yes             Delay Time   : 0
     Auth Type      : None
     Virtual IP     : 10.1.1.10
     Virtual MAC    : 0000-5e00-0101
     Master IP      : 10.1.1.1
   VRRP Track Information:
     Track Object   : 1              State : Positive          Pri Reduced : 30

# Display detailed information about VRRP group 1 on Router B.

[RouterB-GigabitEthernet1/0/1] display vrrp verbose
IPv4 Virtual Router Information:
 Running Mode      : Standard
 Total number of virtual routers : 1
   Interface GigabitEthernet1/0/1
     VRID           : 1               Adver Timer  : 100
     Admin Status   : Up              State        : Backup
     Config Pri     : 100             Running Pri  : 100
     Preempt Mode   : Yes             Delay Time   : 0
     Become Master  : 2200ms left
     Auth Type      : None
     Virtual IP     : 10.1.1.10
     Master IP      : 10.1.1.1

The output shows that in VRRP group 1, Router A is the master and Router B is a backup. Router A forwards packets from Host A to Host B.

# Shut down the uplink interface (GigabitEthernet 1/0/2) on Router A.

[RouterA-GigabitEthernet1/0/1] interface gigabitethernet 1/0/2
[RouterA-GigabitEthernet1/0/2] shutdown

# Ping Host B from Host A to verify that Host B is reachable. (Details not shown.)

# Display detailed information about VRRP group 1 on Router A.

[RouterA-GigabitEthernet1/0/2] display vrrp verbose
IPv4 Virtual Router Information:
 Running Mode      : Standard
 Total number of virtual routers : 1
   Interface GigabitEthernet1/0/1
     VRID           : 1               Adver Timer  : 100
     Admin Status   : Up              State        : Backup
     Config Pri     : 110             Running Pri  : 80
     Preempt Mode   : Yes             Delay Time   : 0
     Become Master  : 2200ms left
     Auth Type      : None
     Virtual IP     : 10.1.1.10
     Master IP      : 10.1.1.2
   VRRP Track Information:
     Track Object   : 1              State : Negative          Pri Reduced : 30

# Display detailed information about VRRP group 1 on Router B.

[RouterB-GigabitEthernet1/0/1] display vrrp verbose
IPv4 Virtual Router Information:
 Running Mode      : Standard
 Total number of virtual routers : 1
   Interface GigabitEthernet1/0/1
     VRID           : 1               Adver Timer  : 100
     Admin Status   : Up              State        : Master
     Config Pri     : 100             Running Pri  : 100
     Preempt Mode   : Yes             Delay Time   : 0
     Auth Type      : None
     Virtual IP     : 10.1.1.10
     Virtual MAC    : 0000-5e00-0101
     Master IP      : 10.1.1.2

The output shows that Router A becomes the backup, and Router B becomes the master. Router B forwards packets from Host A to Host B.