From: Tshon (tshon@xxxxxxxxxxx)
Date: Fri Mar 15 2002 - 04:03:55 GMT-3
I don't understand why you can't use secondary addresses. They can be
private address on the R2-R3
as long as they have the same mask. Classless to Classful will only
pass the network if it matches
the mask, that is why you only got the /24 networks across. If you use
a network covered by the
ospf network statement the filter the lsa, on the interface to R3.
Landon Fitts wrote:
>I was working on a mutual redistribution scenario today between OSPF and
>IGRP, and a thought came to mind.
>
>Here is my scecnario:
>
>R1 ------------------ R2-------------------- R3
>OSPF OSPF | IGRP IGRP
>
>My OSPF domain has networks that are /30, /29, /28,and /24.
>My IGRP domain has only /24 networks.
>When I do mutual redistribution at R2 (and use distribute-list to prevent
>route feedback) R1 sees all my IGRP networks, but IGRP only sees
>my /24 networks from OSPF. So, to fix this I used the "IP Default-Network"
>command at R3 pointing to a reachable loopback interface
>in R2 that is part of my ospf domain. Now, everybody is happy and all
>networks are reachable from each router.
>
>Now, what I want to know is is "ip default-network" considered a static
>route? If so, what are the other alternatives to gain reachability from R3
>to my other networks that are part of OSPF domain. One other possible
>solution could be to use secondary address between R2 and R3, but this isn't
>scalable because I have several subnets in OSPF.
>
>Regards,
>
>Landon Fitts
>NNCSE, NNCDE, CCNP, CCDP, CCIE Lab Candidate
>l.fitts@mindspring.com
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