From: Cisco Nuts (cisconuts@hotmail.com)
Date: Fri Aug 27 2004 - 04:07:28 GMT-3
Check this out:
Before summarization on R2:
r2#rbr os
router ospf 1
log-adjacency-changes
network 172.18.10.2 0.0.0.0 area 0
network 192.168.24.1 0.0.0.0 area 24
network 192.168.25.1 0.0.0.0 area 24
network 192.168.26.1 0.0.0.0 area 24
Check the routing table on R1:
r1#r os
192.168.25.0/32 is subnetted, 1 subnets
O IA 192.168.25.1 [110/65] via 172.18.10.2, 00:00:07, Serial0.1
192.168.24.0/32 is subnetted, 1 subnets
O IA 192.168.24.1 [110/65] via 172.18.10.2, 00:00:07, Serial0.1
192.168.26.0/32 is subnetted, 1 subnets
O IA 192.168.26.1 [110/65] via 172.18.10.2, 00:00:07, Serial0.1
r1#
Then configure summarization on R2:
r2(config)#router os 1
r2(config-router)#area 24 range 192.168.0.0 255.255.0.0
r2(config-router)#end
Check on R1:
r1#cr *
r1#r os
O IA 192.168.0.0/16 [110/65] via 172.18.10.2, 00:00:01, Serial0.1
r1#
Bingo !!!!!!!!!!1
Remember: summarization occurs outbound from the router where it is
configured:
Hope this helps !!
Kind regards..
>From: Richard Dumoulin <Richard.Dumoulin@vanco.fr> >Reply-To: Richard
Dumoulin <Richard.Dumoulin@vanco.fr> >To: Joseph Rothstein
<ziutek@mac.com>, ccielab@groupstudy.com >Subject: RE : OSPF area range
command >Date: Thu, 26 Aug 2004 17:33:38 +0100 > >See if you have another
abr on the network and virtual links. If yes then >you might need to add
the same area range command on this router, > >--Richard > >-----Message
d'origine----- >De : Joseph Rothstein [mailto:ziutek@mac.com] >Envoyi :
Thursday, August 26, 2004 6:21 PM >@ : ccielab@groupstudy.com >Objet :
OSPF area range command > >I'm sure that this has been discussed in the
past sometime, but I cannot >find a link to search the archives, and the
Cisco documentaiton doesn't seem >to make this clear either. > >Waht I am
wondering is if the area x range command needs to go on all the >routers
in the specified area, or only on the ABR. Cisco documentation seems >to
say that onyl on the ABR, but I have tried this, and it doesn't seem to
>do it. In the routing table outside this area, I see the summary route
as I >should, and all the more specific routes as well. > >Please
comment. > >Joe >
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