Example: Configuring VRRP-Track-interface management collaboration

As shown in Figure 63:

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

• Switch A and Switch 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 Switch A operates correctly, Switch A forwards packets from Host A to Host B.

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

	IMPORTANT: By default, interfaces on the device are disabled (in ADM or Administratively Down state). To have an interface operate, you must use the undo shutdown command to enable that interface.

1. Create VLANs and assign ports to them. Configure the IP address of each VLAN interface, as shown in Figure 63. (Details not shown.)

2. Configure Switch A:

   # Configure track entry 1 and associate it with the link status of the uplink interface VLAN-interface 3.

   [SwitchA] track 1 interface vlan-interface 3
   

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

   [SwitchA] interface vlan-interface 2
   [SwitchA-Vlan-interface2] vrrp vrid 1 virtual-ip 10.1.1.10
   

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

   [SwitchA-Vlan-interface2] 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.

   [SwitchA-Vlan-interface2] vrrp vrid 1 track 1 priority reduced 30
   

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

   <SwitchB> system-view
   [SwitchB] interface vlan-interface 2
   [SwitchB-Vlan-interface2] 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 Switch A.

[SwitchA-Vlan-interface2] display vrrp verbose
IPv4 Virtual Router Information:
 Running Mode      : Standard
 Total number of virtual routers : 1
   Interface Vlan-interface2
     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 Switch B.

[SwitchB-Vlan-interface2] display vrrp verbose
IPv4 Virtual Router Information:
 Running Mode       : Standard
 Total number of virtual routers : 1
   Interface Vlan-interface2
     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, Switch A is the master, and Switch B is a backup. Switch A forwards packets from Host A to Host B.

# Shut down the uplink interface VLAN-interface 3 on Switch A.

[SwitchA-Vlan-interface2] interface vlan-interface 3
[SwitchA-Vlan-interface3] 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 Switch A.

[SwitchA-Vlan-interface3] display vrrp verbose
IPv4 Virtual Router Information:
 Running Mode      : Standard
 Total number of virtual routers : 1
   Interface Vlan-interface2
     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 Switch B.

[SwitchB-Vlan-interface2] display vrrp verbose
IPv4 Virtual Router Information:
 Running Mode      : Standard
 Total number of virtual routers : 1
   Interface Vlan-interface2
     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 Switch A becomes the backup, and Switch B becomes the master. Switch B forwards packets from Host A to Host B.