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96 Routing Configuration
Example 1: Configure Administrative Preferences
The following commands configure the administrative preference for the RIP and OSPF:
console#Config
router rip
distance rip 130
exit
For OSPF, an additional parameter identifies the type of OSPF route that the preference value applies to:
router ospf
distance ospf ?
external Enter preference value for OSPF external routes.
inter-area Enter preference value for inter-area routes.
intra-area Enter preference value for intra-area routes.
distance ospf inter 170
exit
Example 2: Assigning Administrative Preferences to Static Routes
By default, static routes are assigned a preference value of 1. The following command changes this
default:
console#Config
ip route distance 20
exit
When you configure a static route, you can assign a preference value to it. The preference overrides the
setting inherited as the default value for static routes.
In this example, two static routes are defined to the same destination but with different next hops and
different preferences (25 and 30). The route with the higher preference will only be used when the
preferred route is unavailable:
console#Config
ip route 10.25.67.0 255.255.255.0 10.25.22.2
ip route 10.25.67.0 255.255.255.0 10.25.21.0
exit
Similarly, you can create two default routes—one preferred and the other used as a backup. In this
example, the preference values 1 and 10 are assigned:
console#Config
ip route default 10.25.67.2 1
ip route default 10.25.67.7 10
exit