From: Annu (annu_roopa@xxxxxxxxx)
Date: Thu Aug 09 2001 - 11:13:36 GMT-3
Daniel,
This is a common behaviour. This is the way RIP and
IGRP function.I can explain it, but thought this
doc(s) will be better explanatory of the complete
behaviour . Hope it helps u. May be more than what u
want but a must read thru i think !!
http://www.cisco.com/warp/public/105/55.html
http://www.cisco.com/warp/public/105/54.html
http://www.cisco.com/warp/public/105/53.html
Bye,
Annu.
--- "Daniel C. Young" <danyoung99@mediaone.net> wrote:
> Group,
>
> Does IGRP advertise loopbacks or ethernet segments
> as network summaries
> only? With token ring it seems to advertise the
> subnet just fine. I have the
> following configuration:
>
> interface Loopback0
> ip address 15.15.8.8 255.255.255.0
> !
> interface Ethernet0
> ip address 172.27.1.1 255.255.255.0
> no keepalive
> !
> interface Ethernet1
> ip address 172.27.2.1 255.255.255.0
> no keepalive
> !
> interface Serial0
> ip address 10.1.10.8 255.255.255.0
> !
> interface TokenRing0
> ip address 10.2.1.1 255.255.255.0
> ring-speed 16
> !
> interface TokenRing1
> ip address 10.3.1.1 255.255.255.0
> ring-speed 16
> !
> router igrp 1
> passive-interface Ethernet0
> passive-interface Ethernet1
> passive-interface Loopback0
> passive-interface TokenRing0
> passive-interface TokenRing1
> network 10.0.0.0
> network 15.0.0.0
> network 172.27.0.0
>
> As you can see, IGRP is advertising the TR
> interfaces as subnets, but only
> classful network summaries for the ethernet and
> loopbacks. The remote router
> is not receiving the route for the loopback address
> as well.
>
> 06:14:50: IGRP: sending update to 255.255.255.255
> via Serial0 (10.1.10.8)
> 06:14:50: subnet 10.3.1.0, metric=688
> 06:14:50: subnet 10.2.1.0, metric=688
> 06:14:50: network 172.27.0.0, metric=1100
> 06:14:50: network 15.0.0.0, metric=501
> 06:14:50: IGRP: Update contains 2 interior, 2
> system, and 0 exterior routes.
> 06:14:50: IGRP: Total routes in update: 406:17:50:
> IGRP: received update
> from 10.1.10.6 on Serial0
>
> Am I missing something obvious?
>
> Please help.
>
> Daniel C. Young
> Sr. Network Engineer
> (909) 221-1928 Direct
> dan.young@sbc.com
>
> SBC Internet Data Center
> 2681 Kelvin Ave.
> Irvine, CA 92614
> (949) 221-1900 Main
> (949) 221-1978 Fax
> **Please
> read:http://www.groupstudy.com/list/posting.html
>
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