Redistribution

From: gladston@br.ibm.com
Date: Tue Jun 29 2004 - 16:01:41 GMT-3

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RIP and Redistribution

R3 receives the route 172.10.124.128 from R4 (RIP serial 0) and from R2 (EIGRP Ethernet 0).
R3 redistributes RIP into OSPF; the net 172.10.124.128 is not redistributed into OSPF. If Ethernet 0 goes down, net 172.10.124.128 is redistributed.

I can see the route 172.10.124.128 arriving at R3 through RIP. But it seems that the route is redistributed into OSPF only if RIP install the route in the routing table.

Any explanation/reading sugestion?

The following commands shows that when the route is received from EIGRP, RIP does not redistribute it into OSPF.
r3#sh ip os da

                Type-5 AS External Link States

Link ID ADV Router Age Seq# Checksum Tag
172.10.124.128 172.10.43.3 24 0x80000001 0xACDA 0
195.1.1.0 172.10.43.3 59 0x80000001 0x3DB8 0

r3#c
Enter configuration commands, one per line. End with CNTL/Z.
r3(config)#int e0
r3(config-if)#no sh
r3(config-if)#^Z
r3#
r3#sh ip os da

                Type-5 AS External Link States

Link ID ADV Router Age Seq# Checksum Tag
195.1.1.0 172.10.43.3 102 0x80000001 0x3DB8 0

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