Configuring an additional metric for a RIP interface

As shown in Figure 9, run RIPv2 on all the interfaces of Switch A, Switch B, Switch C, Switch D, and Switch E.

Switch A has two links to Switch D. The link from Switch B to Switch D is more stable than that from Switch C to Switch D. Configure an additional metric for RIP routes received from VLAN-interface 200 on Switch A so Switch A prefers route 1.1.5.0/24 learned from Switch B.

1. Configure IP addresses for interfaces. (Details not shown.)

2. Configure basic RIP:

   # Configure Switch A.

   <SwitchA> system-view
   [SwitchA] rip 1
   [SwitchA-rip-1] network 1.0.0.0
   [SwitchA-rip-1] version 2
   [SwitchA-rip-1] undo summary
   [SwitchA-rip-1] quit
   

   # Configure Switch B.

   <SwitchB> system-view
   [SwitchB] rip 1
   [SwitchB-rip-1] network 1.0.0.0
   [SwitchB-rip-1] version 2
   [SwitchB-rip-1] undo summary
   

   # Configure Switch C.

   <SwitchC> system-view
   [SwitchB] rip 1
   [SwitchC-rip-1] network 1.0.0.0
   [SwitchC-rip-1] version 2
   [SwitchC-rip-1] undo summary
   

   # Configure Switch D.

   <SwitchD> system-view
   [SwitchD] rip 1
   [SwitchD-rip-1] network 1.0.0.0
   [SwitchD-rip-1] version 2
   [SwitchD-rip-1] undo summary
   

   # Configure Switch E.

   <SwitchE> system-view
   [SwitchE] rip 1
   [SwitchE-rip-1] network 1.0.0.0
   [SwitchE-rip-1] version 2
   [SwitchE-rip-1] undo summary
   

   # Display all active routes in the RIP database on Switch A.

   [SwitchA] display rip 1 database
      1.0.0.0/8, auto-summary
          1.1.1.0/24, cost 0, nexthop 1.1.1.1, RIP-interface
          1.1.2.0/24, cost 0, nexthop 1.1.2.1, RIP-interface
          1.1.3.0/24, cost 1, nexthop 1.1.1.2
          1.1.4.0/24, cost 1, nexthop 1.1.2.2
          1.1.5.0/24, cost 2, nexthop 1.1.1.2
          1.1.5.0/24, cost 2, nexthop 1.1.2.2
   

   The output shows two RIP routes destined for network 1.1.5.0/24, with the next hops as Switch B (1.1.1.2) and Switch C (1.1.2.2), and with the same cost of 2.

3. Configure an additional metric for a RIP interface:

   # Configure an inbound additional metric of 3 for RIP-enabled interface VLAN-interface 200 on Switch A.

   [SwitchA] interface vlan-interface 200
   [SwitchA-Vlan-interface200] rip metricin 3
   

   # Display all active routes in the RIP database on Switch A.

   [SwitchA-Vlan-interface200] display rip 1 database
      1.0.0.0/8, auto-summary
          1.1.1.0/24, cost 0, nexthop 1.1.1.1, RIP-interface
          1.1.2.0/24, cost 0, nexthop 1.1.2.1, RIP-interface
          1.1.3.0/24, cost 1, nexthop 1.1.1.2
          1.1.4.0/24, cost 2, nexthop 1.1.1.2
          1.1.5.0/24, cost 2, nexthop 1.1.1.2
   

   The output shows that only one RIP route reaches network 1.1.5.0/24, with the next hop as Switch B (1.1.1.2) and a cost of 2.