From: Brian Dennis (brian@labforge.com)
Date: Wed Jun 11 2003 - 18:29:25 GMT-3
OSPF Version 2 - RFC 2328
3.7. Partitions of areas
OSPF does not actively attempt to repair area partitions. When
an area becomes partitioned, each component simply becomes a
separate area. The backbone then performs routing between the
new areas. Some destinations reachable via intra-area routing
before the partition will now require inter-area routing.
Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
SHARMA,MOHIT (HP-Germany,ex1)
Sent: Wednesday, June 11, 2003 1:38 PM
To: 'Group'
Subject: OSPF partitioning issue
Hi all,
In the following scenario-
Area0---------Area2
\ |
\ |
\ |
\ |
Area2
If the link between Area2 fails, it becomes discontiguos, this makes the
intra area routes to be shown as inter area routes in both the area 2
routers, I tested this in the lab and found no visible reachability
issues.
Does this disconinuity create any hidden problems?
The other question is, that if we need to repair this, can i use a
virtual
link between Aree2 to Area 0 and then to Area 2
or should I use a tunnel interface on each router putting them into area
2??
I actually tried it using tunnel but was not able to make it work , as I
was
still seeing some of the Area 2 routes as O IA routes.
Thanks as always for your inputs.
Smiles,
Mohit.
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