OSPF Summarization

From: Young Bae (ybae@cisco.com)
Date: Mon Sep 23 2002 - 05:29:33 GMT-3


Hello,

If a router is both an ABR and an ASBR, would I use the "area x range" or
the "summary-address" command to summarize a route for a classful routing
protocol for redistribution? For all other routers, I'm able to inject
the routes into RIP v1 by summarizing at the border, but for one
particular router, which is both an ABR and an ASBR that is
redistributing the OSPF routes into RIP, I'm not able to inject the route
that belongs to Area12 into the RIP, unless I use the "summary-address"
command under the OSPF process. Why is that? When I summarize it using
the "area 12 range" command, I see the /24 summary-route in the OSPF database,but it never
makes it into the RIP domain.

Thanks in advance for the explanation.



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