Configuring OSPF

OSPF Configuration Examples

The following example redistributes RIP routes with a hop count equal to 1 into OSPF. These routes will be redistributed into OSPF as external LSAs with a metric of 5, a metric type of type 1, and a tag equal to 1.

router ospf 109

redistribute rip route-map rip-to-ospf

!

route-map rip-to-ospf permit match metric 1

set metric 5

set metric-type type1 set tag 1

The following example redistributes OSPF learned routes with tag 7 as a RIP metric of 15:

router rip

redistribute ospf 109 route-map 5

!

route-map 5 permit match tag 7

set metric 15

The following example redistributes OSPF intra-area and interarea routes with next hop routers on serial interface 0 into BGP with an INTER_AS metric of 5:

router bgp 109

redistribute ospf 109 route-map 10

!

route-map 10 permit match route-type internal match interface serial 0 set metric 5

The following example redistributes two types of routes into the integrated IS-IS routing table (supporting both IP and CLNS). The first type is OSPF external IP routes with tag 5; these routes are inserted into Level 2 IS-IS LSPs with a metric of 5. The second type is ISO-IGRP derived CLNS prefix routes that match CLNS access list 2000; these routes will be redistributed into IS-IS as Level 2 LSPs with a metric of 30.

router isis

redistribute ospf 109 route-map 2 redistribute iso-igrp nsfnet route-map 3

!

route-map 2 permit

match route-type external match tag 5

set metric 5

set level level-2

!

route-map 3 permit match address 2000 set metric 30

With the following configuration, OSPF external routes with tags 1, 2, 3, and 5 are redistributed into RIP with metrics of 1, 1, 5, and 5, respectively. The OSPF routes with a tag of 4 are not redistributed.

router rip

redistribute ospf 109 route-map 1

!

route-map 1 permit match tag 1 2 set metric 1

!

Cisco IOS IP Configuration Guide

IPC-251

Page 297
Image 297
Cisco Systems 78-11741-02 IPC-251, Router rip Redistribute ospf 109 route-map, Router bgp Redistribute ospf 109 route-map