From: ccie2be (ccie2be@nyc.rr.com)
Date: Wed Aug 06 2003 - 10:10:09 GMT-3
Good Morning,
I just configured 2 ospf routers with different ospf net types
On R2's s0, I configured p2m.
On R3's s0, I left it at default (non-broadcast for physical F/R).
Result:
There was an election for the DR (R2 won - it had the higher router-id).
R2 and R3 became adjacent and exchanged the link state database, but, R2 and
R3 didn't add any of the routes to the route table that they had learned from
each other. Note: a check of the ospf link state database on R3 showed that
it had learned of all the routes from R2 and vice versa.
When I change R3's s0 back to ospf net type, the route tables on both R2 and
R3 both show all the routes that were exchanged.
Questions:
Why do R2 and R3 become adjacent even though they have different ospf net
types?
Why is there a DR/BDR election between R2 and R3 when R3 has an ospf net type
of "non-broadcast"?
Why doesn't R3 add the routes it learns from R2 if it's adjacent to R2?
I thought that that R2 and R3 wouldn't become adjacent since they had
different net types but if they did become adjacent, then they would add the
routes they learned from each other. Is this behavior to be expected or is
there something else going on?
Thanks in advance, Raj
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