RE: advertise ospf as 192.168.1.1 /29 0.0.0.0 area 0 and

From: Richard Dumoulin (richard.dumoulin@vanco.es)
Date: Mon Apr 12 2004 - 11:27:19 GMT-3


>Right. So what is the forwarding address in each of these cases? Explicit

>to .2 in the first, and 0.0.0.0 in the second I'd imagine?

Yes

>Also, what are the implications if .2 is reachable, but by another
>protocol, say eigrp to the rest of a multi-area OSPF domain. Really some
>interesting stuff comes into play here that all deal with how the
>forwarding address is set,

Implications if the forwarding address is set to .2 ? .10 avoids an extra
hop.

Implications if the forwarding address is 0.0.0.0 ? Extra hop + icmp
redirect ? I would have to run some debugs to see if .1 is sending
redirects. But by hearing you there seems to be more ?

Also .2 belongs to the 137.20.20.0/24 network which is part of the ospf
cloud. So I don't see how .2 can be reachable by another protocol.

>and further what the restrictions are for using
>type 5's with various forwarding addresses (ie you must be able to resolve
>the forwarding address via an OSPF inter area route).

Hehe, here I have no clue, would you shed some light ? I guess you are
seeing deeper than me ...

--Richard



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