From: Ashok Sud (Ashok.Sud@xxxxxxxxxx)
Date: Thu Aug 16 2001 - 21:49:52 GMT-3
There is a virtual link defined through area 2. So you need to put area 2
range command on both ABRs. The routers at each end of the virtual link act
as ABR for that area.
Cheers
Ashok
-----Original Message-----
From: sanjay [mailto:ccienxtyear@hotmail.com]
Sent: Friday, 17 August 2001 10:14
To: ccielab@groupstudy.com
Subject: OSPF and Area Range question
When using the area range command (so an IGRP router with /24 can ping it),
such as the config below;
router ospf 100
network 170.100.2.0 0.0.0.255 area 0
network 170.100.5.0 0.0.0.255 area 3
network 170.100.6.0 0.0.0.15 area 0
network 170.100.7.0 0.0.0.3 area 2
area 2 range 170.100.7.0 255.255.255.0
area 2 virtual-link 170.100.4.1
Partial routing table of one of the OSPF routers
170.100.0.0/16 is variably subnetted, 12 subnets, 5 masks
O E2 170.100.200.0/24 [110/20] via 170.100.2.3, 00:08:02, Serial1
O E2 170.100.42.240/28 [110/100] via 170.100.2.1, 00:08:02, Serial1
O E2 170.100.150.0/24 [110/20] via 170.100.2.3, 00:08:02, Serial1
O 170.100.6.0/28 [110/1626] via 170.100.2.1, 00:08:02, Serial1
O IA 170.100.7.0/24 [110/138] via 170.100.2.3, 00:08:02, Serial1
O IA 170.100.7.0/30 [110/212] via 170.100.2.3, 00:08:02, Serial1
I noticed that all my OSPF routers now have 2 routes for the 170.100.7.0
network in the routing table. One route with 170.100.7.0/30 and the other
one
with 170.100.7.0/24 . So, my question is how to fix this, maybe
access-list/distribute list and on which router should it go ??. The IGRP
router can now ping this network and so can all the OSPF routers. Any
suggestions/input will be appreciated.
thanks,
Sanjay
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