From: Fred Ingham (fingham@xxxxxxx)
Date: Thu Aug 22 2002 - 16:59:00 GMT-3
Clip Avoid
Clip Avoid
Clip Avoid
Also you can use secondary addresses on the IGRP link or a tunnel.
Fred
----- Original Message -----
From: "Warner, Thomas S" <thomas.s.warner@lmco.com>
To: <ccielab@groupstudy.com>
Sent: Thursday, August 22, 2002 3:00 PM
Subject: Strategy for redistribution of OSPF/IGRP
> All
>
> I know this subject has been beaten to death on many a discussion group.
> However, I'm trying to come up with the best strategy if I am told that I
> can not use the ip default-network command in the IGRP routing domain when
> redistributing OSPF into IGRP.
>
> Consider the scenario below. All interface subnet addresses on all of the
> routers are taken from the same major network 140.100.0.0
>
> s0/0 s0/1
> OSPF Area 2 OSPFArea0 IGRP
> 140.100.25.0/29 140.100.20.0/29 140.100.10.0/24
> (.1) (.2) (.1) (.1) (.2)
> - R7 - - R3 - - R4 -
>
>
> I am redistributing OSPF routes into IGRP on R3 with hopes of seeing all
> OSPF routes and connected interfaces on R3 appear in R4's routing table.
>
> Intra area routes (IA): I can summarize any IA routes with the area range
> command and get them into the R4. So I entered the "area 2 range" command
> on R7 to accomplish that. I'm ok here.
>
> External routes (E1, E2): If I had some external routes I could use the
> summary-address command on the ASBR and summarize them at the /24 boundary
> and get those into R4. I'm ok here.
>
> Area 0 networks. The only way that I've been able to get the
> 140.100.20.0/29 network into R4 was by creating another OSPF routing
> process, redistributing the connected interface into it, using the
> summary-address command, and then redistributing this second process into
> IGRP.
>
> R3:
> router ospf 1
> log-adjacency-changes
> network 140.100.20.1 0.0.0.0 area 0
> !
> router ospf 2 (THIS IS THE EXTRA OSPF PROCESS)
> summary-address 140.100.20.0 255.255.255.0
> redistribute connected subnets route-map dot20
> !
> router igrp 1
> redistribute connected
> redistribute ospf 1 metric 1000 100 255 1 1500
> redistribute ospf 2 metric 1000 100 255 1 1500
> passive-interface Serial0/0
> network 140.100.0.0
> !
> access-list 5 permit 140.100.20.0
> route-map dot20 permit 10
> match ip address 5
>
> Is there another way to do this because this solution seems very
inelegant?
> Once again, I'm just trying to have a set strategy before walking in that
> door at RTP. I've also tried the "area 0 range 140.100.20.0
255.255.255.0"
> command and been unsuccessful. Thanks in advance,
>
> Tom Warner
> Lockheed Martin Enterprise Information Systems
> Computing and Network Services
> email: mailto:thomas.s.warner@lmco.com
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