From: Bob Sinclair (bsin@cox.net)
Date: Sun Jan 25 2004 - 00:59:40 GMT-3
Paul,
Notice the traffic share counts are the same. If you do a slow ping and
continue to repeat the show command, I think you will see the asterisk
alternate between the routes.
HTH,
Bob Sinclair
CCIE #10427, CISSP, MCSE
www.netmasterclass.net
----- Original Message -----
From: "Paul Chen" <cpjchen@starhub.net.sg>
To: <ccielab@groupstudy.com>
Sent: Saturday, January 24, 2004 9:29 PM
Subject: RIP - path selection
> Hi All,
>
>
>
> Given the same metric values how does RIP decide which path to choose to a
> destination network ?
>
>
>
> I know that equal cost load balancing takes place but in this scenario ,
one
> path is chosen over the other :
>
>
>
>
>
> R3 R2
>
> \ /
>
> R5
>
>
>
>
>
> R 141.37.106.0/24 [120/1] via 141.37.25.2, 00:00:03, Serial0
>
> [120/1] via 141.37.35.3, 00:00:03,
Serial1
>
>
>
> R 141.37.101.0/24 [120/1] via 141.37.25.2, 00:00:03, Serial0
>
> [120/1] via 141.37.35.3, 00:00:03,
Serial1
>
>
>
>
>
> R5#
>
> R5#sh ip ro 141.37.101.0
>
> Routing entry for 141.37.101.0/24
>
> Known via "rip", distance 120, metric 1
>
> Redistributing via rip
>
> Last update from 141.37.25.2 on Serial0, 00:00:11 ago
>
> Routing Descriptor Blocks:
>
> * 141.37.25.2, from 141.37.25.2, 00:00:11 ago, via Serial0
> <-------------------- This path to R2 is chosen over R3
>
> Route metric is 1, traffic share count is 1
>
> 141.37.35.3, from 141.37.35.3, 00:00:16 ago, via Serial1
>
> Route metric is 1, traffic share count is 1
>
>
>
>
> R2 is chosen over R3 even though the metric values are the same ?
>
>
>
> Any help appreciated.
>
>
>
> Thanks.
>
> Paul
>
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