From: Sadiq Yakasai (sadiqtanko@gmail.com)
Date: Mon Mar 24 2008 - 09:36:48 ART
Hi Nour,
By default, when you redistribute connected interfaces into a routing
protocol, it includes all connected interface. As such, when you use a
route-map and filter specific interfaces (or prefixes) you are
controlling more specifically what gets redistributed into the other
protocol.
Also, by default, when you redistribute a routing protocol into
another one, it includes all connected interfaces on which that
protocol is running. But this default behaviour changes as soon as you
start to redistribute connected into the same destination protocol as
you previously were redistributing into. When you do redistribute
connected, this breaks the initial default behaviour in which you were
including the connected interfaces, which means you have to find
another way to get that connected interface(s) into the destination
protocol ( I hope my explanation is clear enough anyway).
In your example, since you are redistributing EIGRP to OSPF, this
should redistribute all EIGRP routes in the routing table of R2 as
well as the CONNECTED interfaces on which you have EIGRP enabled
(G0/0). But as soon as you start doing CONNECTED to OSPF, it means you
have stopped all connected interfaces from getting redistributed into
OSPF (including the G0/0) except those you have manually allowed in
the route-map (which is now only BB2 prefix).
Modify your route-map to include the interface that is running EIGRP
on R2 and see what happens.
HTH
Sadiq
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