From: Chua, Parry (Parry.Chua@xxxxxxxxxx)
Date: Sun Mar 31 2002 - 22:48:27 GMT-3
I have not done extensive tests, but I know that when redistribute from a Higer
AD to a Lower AD
routing protocol could give sub-optiomal path, for example:-
*Redistribute Rip to Igrp
*
+--igrp--(R1)--Rip--+
| |
(R2) (R3)---lo0
| |
+--igrp--(R4)--Rip--+
Let said R1 redistribute Rip into Igrp, at R4, to reach R3 lo0, it will pick pa
th via R2->R1->R3 instead of R3. One of the soution is to set the AD value of r
edistrubted route from Rip to a value higer than the Rip(>120) in Igrp domain.
> Parry Chua
>
>
-----Original Message-----
From: ying chang [mailto:ying_c@hotmail.com]
Sent: Monday, April 01, 2002 8:58 AM
To: ccielab@groupstudy.com
Subject: routing loop in single redistribution point?
Hi all,
In Solie's CCIE Pratical Studies errata for page 623, he took out the
following statement from the 'Caution' box: "If there is only one
redistribution point, inherent loop prevention whithin the routing protocol
will be sufficient enough to prevent loops". I can see multiple
redistributing points can cause routing loop as demonstrate in Doyle I's
Route Filtering chapter, but have troubles to see how a routing loop can be
fromed in a single redistribution point. Can someone give me an example of
such case?
Thanks,
Chang
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