Configuring a redundancy group with Layer 3 interface members

As shown in Figure 33, Device A (member ID 1) and Device B (member ID 2) form an IRF fabric.

Configure a redundancy group on the IRF fabric to ensure that traffic is forwarded along the Router 1—Device A—Router 3 path when the path is available. When a link or device failure occurs on the path, switch traffic to the Router 2—Device B—Router 4 path.

1. Assign IP addresses to the interfaces as shown in Figure 33. (Details not shown.)

2. Create track entries to monitor the physical layer state of the interfaces.

   <Sysname> system-view
   [Sysname] track 1 interface gigabitethernet 1/0/1 physical
   [Sysname] track 2 interface gigabitethernet 1/0/2 physical
   [Sysname] track 3 interface gigabitethernet 2/0/1 physical
   [Sysname] track 4 interface gigabitethernet 2/0/2 physical
   

3. Configure a redundancy group:

   # Create redundancy group aaa and create node 1 for the redundancy group.

   [Sysname] redundancy group aaa
   [Sysname] redundancy-group-aaa] node 1
   

   # Bind node 1 to Device A.

   [Sysname-redundancy-group-aaa-node1] bind slot 1
   

   # Set the priority of node 1 to 100.

   [Sysname-redundancy-group-aaa-node1] priority 100
   

   # Assign GigabitEthernet 1/0/1 and GigabitEthernet 1/0/2 to node 1.

   [Sysname-redundancy-group-aaa-node1] node-member interface gigabitethernet 1/0/1
   [Sysname-redundancy-group-aaa-node1] node-member interface gigabitethernet 1/0/2
   

   # Associate track entries 1 and 2 with node 1. Exclude GigabitEthernet 1/0/1 and GigabitEthernet 1/0/2 from the shutdown action by the Reth module.

   [Sysname-redundancy-group-aaa-node1] track 1 interface gigabitethernet 1/0/1
   [Sysname-redundancy-group-aaa-node1] track 2 interface gigabitethernet 1/0/2
   [Sysname-redundancy-group-aaa-node1] quit
   

   # Create node 2 for redundancy group aaa.

   [Sysname] redundancy-group-aaa] node 2
   

   # Bind node 2 to Device B.

   [Sysname-redundancy-group-aaa-node2] bind slot 2
   

   # Set the priority of node 2 to 50.

   [Sysname-redundancy-group-aaa-node2] priority 50
   

   # Assign GigabitEthernet 2/0/1 and GigabitEthernet 2/0/2 to node 2.

   [Sysname-redundancy-group-aaa-node2] node-member interface gigabitethernet 2/0/1
   [Sysname-redundancy-group-aaa-node2] node-member interface gigabitethernet 2/0/2
   

   # Associate track entries 3 and 4 with node 2. Exclude GigabitEthernet 2/0/1 and GigabitEthernet 2/0/2 from the shutdown action by the Reth module.

   [Sysname-redundancy-group-aaa-node2] track 3 interface gigabitethernet 2/0/1
   [Sysname-redundancy-group-aaa-node2] track 4 interface gigabitethernet 2/0/2
   [Sysname-redundancy-group-aaa-node2] quit
   

# Verify that node 1 is the primary node in redundancy group aaa. The member interfaces are up on both node 1 and node 2.

[Sysname-redundancy-group-aaa] display redundancy group aaa
Redundancy group aaa (ID 1):
  Node ID      Slot       Priority   Status        Track weight
  1            Slot1      100        Primary       255
  2            Slot2      50         Secondary     255

Preempt delay time remained     : 0    min
Preempt delay timer setting     : 1    min
Remaining hold-down time        : 0    sec
Hold-down timer setting         : 1    sec
Manual switchover request       : No

Member interfaces:
Member failover groups:

Node 1:
  Node member     Physical status
      GE1/0/1   UP
      GE1/0/2   UP
  Track info:
    Track    Status       Reduced weight     Interface
    1        Positive     255                GE1/0/1
    2        Positive     255                GE1/0/2
Node 2:
  Node member     Physical status
      GE2/0/1   UP
      GE2/0/2   UP
  Track info:
    Track    Status       Reduced weight     Interface
    3        Positive       255              GE2/0/1
    4        Positive       255              GE2/0/2

# Shut down GigabitEthernet 1/0/2.

[Sysname-redundancy-group-aaa] quit
[Sysname] interface gigabitethernet 1/0/2
[Sysname-GigabitEthernet1/0/2] shutdown

# Verify that node 2 has become the primary node in redundancy group aaa. GigabitEthernet 1/0/1 has been shut down by the Reth module. The member interfaces on node 2 are up.

[Sysname-GigabitEthernet1/0/2] display redundancy group aaa
Redundancy group aaa (ID 1):
  Node ID      Slot       Priority   Status        Track weight
  1            Slot1      100        Secondary     -255
  2            Slot2      50         Primary       255

Preempt delay time remained     : 0    min
Preempt delay timer setting     : 1    min
Remaining hold-down time        : 0    sec
Hold-down timer setting         : 1    sec
Manual switchover request       : No

Member interfaces:
Member failover groups:

Node 1:
  Node member     Physical status
      GE1/0/1       DOWN(redundancy down)
      GE1/0/2       DOWN
  Track info:
    Track    Status       Reduced weight     Interface
    1         Negative     255                GE1/0/1
    2         Negative     255                GE1/0/2 (Fault)
Node 2:
  Node member     Physical status
      GE2/0/1   UP
      GE2/0/2   UP
  Track info:
    Track    Status       Reduced weight     Interface
    3         Positive       255              GE2/0/1
    4         Positive       255              GE2/0/2