From: Montiean (noktes@bellsouth.net)
Date: Fri Jul 01 2005 - 15:12:31 GMT-3
Hi,
I am looking for the situation that we are using validate-update-source.
Ofcourse, I have archieved thourgh GS and cisco page but it doesnot relieve my
headache yet. I lab up to test this command.
r4 --isdn --- r1
r4 and r1 connected to each others under rip. 10.120.120.0/24. R4 also has
44.44.44.44/24 as a secondary address.
With validate source
03:17:34: RIP: received v2 update from 10.120.120.4 on BRI0/0
03:17:34: 10.40.40.0/24 via 0.0.0.0 in 1 hops
03:17:34: 10.80.80.0/24 via 0.0.0.0 in 2 hops
03:17:34: 10.110.110.0/24 via 0.0.0.0 in 1 hops
03:17:34: 150.1.4.0/24 via 0.0.0.0 in 1 hops
03:17:34: RIP: received v2 update from 44.44.44.44 on BRI0/0
03:17:34: 10.40.40.0/24 via 0.0.0.0 in 1 hops
03:17:34: 10.80.80.0/24 via 0.0.0.0 in 2 hops
03:17:34: 10.110.110.0/24 via 0.0.0.0 in 1 hops
03:17:34: 150.1.4.0/24 via
Without validate-update-source
03:18:57: RIP: received v2 update from 10.120.120.4 on BRI0/0
03:18:57: 10.40.40.0/24 via 0.0.0.0 in 1 hops
03:18:57: 10.80.80.0/24 via 0.0.0.0 in 2 hops
03:18:57: 10.110.110.0/24 via 0.0.0.0 in 1 hops
03:18:57: 150.1.4.0/24 via 0.0.0.0 in 1 hops
03:18:57: RIP: ignored v2 update from bad source 44.44.44.44 on BRI0/0
Under DDR, one task to accomplish is to disable this validation. I lab up DDR,
but it has worked fine without disable this command. What's kind of situation
we need to use this one.. Especially in the lab exam. Appreciated your time to
look into this question.
--Montiean
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