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Configuring IP Unicast Routing
Configuring Protocol-Independent Features
EXAMPLE
The following example shows how to redistribute Routing Information Protocol (RIP) routes with a hop count equal to 1
to Open Shortest Path First (OSPF). These routes will be redistributed to OSPF as external link-state advertisements
(LSAs) with a metric of 5, metric type of Type 1, and a tag equal to 1.
Switch(config)# router ospf 109
Switch(config-router)# redistribute rip route-map rip-to-ospf
Switch(config-router)# exit
Switch(config)# route-map rip-to-ospf permit
Switch(config-route-map)# match metric 1
Switch(config-route-map)# set metric 5
Switch(config-route-map)# set metric-type type1
Switch(config-route-map)# set tag 1
Controlling Route Redistribution
You can distribute routes from one routing domain into another and control route distribution. Note that the keywords in
this procedure are the same as defined in the previous procedure.
The metrics of one routing protocol do not necessarily translate into the metrics of another. In these situations, an artificial
metric is assigned to the redistributed route. Uncontrolled exchanging of routing information between different routing
protocols can create routing loops and seriously degrade network operation.
If you have not defined a default redistribution metric that replaces metric conversion, some automatic metric translations
occur between routing protocols:
RIP can automatically redistribute static routes. It assigns static routes a metric of 1 (directly connected).
Any protocol can redistribute other routing protocols if a default mode is in effect.
BEFORE YOU BEGIN
Review the usage guidelines and additional examples for the redistribute command in the
Protocol-Independent Command
Reference.
914
Cisco IOS IP Routing:
- Quick Links:
- Configuration Overview
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