From: Radoslav Vasilev (deckland@gmail.com)
Date: Sat Feb 11 2006 - 13:30:07 GMT-3
Hi Group,
The setup:
(Area 0) fa 0/1[R2] fa0/0 ------------ (Area 12) ----------- fa0/0 [R1]
fa0/1 ------------ (Area 1)
Obviously, we need to connect Area 1 to the Backbone area with a virtual
link.
A requirement is to filter a prefix in the OSPF database on R1 originated in
Area 0. All summary routes should be visible as before (meaning no totally
stub area is the requirement here).
R2's configuration:
router ospf 100
area 12 filter-list prefix blabla in
ip prefix-list blabla seq 5 deny 192.168.5.5/32
ip prefix-list blabla seq 100 permit 0.0.0.0/0 le 32
If i don't have virtual link in the above setup, the filtering works just
fine. Aparatenly when i have the virtual-link up, i get the LSA over it and
it's installed in the routing table on R1.
My question: If the requirement is to prevent that LSA to be advertised to
R1, what could be the solution? Remember that we could have additional areas
connected to R2, meaining that we couldn't just use:
area 0 filter-list prefix blabla out (filter the route coming from backbone
and going out to all other areas)
Any ideas?
-rado
This archive was generated by hypermail 2.1.4 : Wed Mar 01 2006 - 11:28:17 GMT-3