From: Bogdan Sass (bogdan.sass@catc.ro)
Date: Wed Aug 27 2008 - 08:35:09 ART
Nitro Drops wrote:
> Guys,
>
> A bit lost on this redistribution.
>
>
> router ripredistribute connected metric 1 route-map CONNECTED>RIPredistribute ospf 1 metric 1route-map CONNECTED>RIP permit 10match interface Ethernet0/0 Loopback0/0 Serial1/2 Serial1/3 Serial1/0
>
>
> Q1.) Why is there a need to redistribute connected interfaces of R3's s1/2, s1/3, s1/0 into RIP since they are advertised in OSPF domain? In the previous labs when doing redistribution RIP and OSPF, i dont remember redistributing those interfaces (already advertised in OSPF domain) as connected interfaces into RIP. Is there a reason for this?
>
> When i do a show IP route for these interfaces s1/2, s1/3, s1/0 on R3, they are known as connected routes instead of OSPF routes, is that the reason why these connected interfaces are required to be redistributed manually into RIP domain. How come R3's E0/1 (already advertised in RIP domain) does not need to be redistributed as connected into OSPF domain?
>
> Any kind advices are appreciated.
>
I'm not sure about that particular lab (I do not remember the exact
topology), but I think the idea is as follows:
-when you redistribute OSPF into RIP, RIP will automatically pick up:
a) all routes that show up in the topology table as being
received from RIP, and
b) all connected routes corresponding to interfaces that run
RIP.
-by manually redistributing connected routes into RIP, you "break"
part b), by forcing the router to redistribute only a specific subset of
the connected routes. Therefore, you need to include the connected
interfaces running OSPF, since they are no longer automatically
redistributed.
HTH,
-- Bogdan Sass CCAI,CCNP,CCSP,JNCIA-ER Information Systems Security Professional "Curiosity was framed - ignorance killed the cat"Blogs and organic groups at http://www.ccie.net
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