11.2.6 Configuring Multipathing

Points to note

By adjusting cost values, you can establish an equal-cost multipath to a destination regardless of the number of routers through which the route passes.

Figure 11-7: Configuration of multipathing

Command examples

This procedure establishes an equal-cost multipath on Switch A.

1. (config)# router ospf 1

   (config-router)# network 10.0.0.0 0.255.255.255 area 0

   (config-router)# exit

   Associates interfaces in the 10.0.0.0/8 network range with area 0.

2. (config)# interface vlan 1

   (config-if)# ip ospf cost 2

   Sets the cost value of VLAN 1 to 2. This gives routes through VLAN 1 the same cost as routes through VLAN 2.