Hi Steve,
Thanks a lot for replying, you are absolutly right on the first question as in 
one of the Advance tech labs i attemted a question which asked the following 
question
BB1--------R1

R1 is configured with RIPv2 and it;s is advertising its direectly connected 
networks. Ensure that R1 gets 10 routes from BB1. Do not configure tunnel and 
secondary IP.
 
The solution shows only one no validate source update on R1 and the routes are 
transfered. to get reachabitly R1 is give a static route pointing towards the 
seriel interface of BB1.
I consider this solution incomplete without mentionning the network statement 
in BB1 or redistributing the routes in Rip. Please correct me if i am wrong.
 
 
Do you have an article which talks about suppressing null updates.
 
 
Regards
Piyush
--- On Fri, 16/4/10, Di Bias, Steve <[email protected]> wrote:


From: Di Bias, Steve <[email protected]>
Subject: RE: [OSL | CCIE_RS] RIP(validate source update)
To: "piyush dwivedi" <[email protected]>, "[email protected]" 
<[email protected]>
Date: Friday, 16 April, 2010, 10:31 AM






I’m a little confused about your first question, maybe I’m not reading it 
right? 
The “no validate update source” command tells RIP that it shouldn’t verify the 
source IP address of the incoming routing updates, that’s it. If you want 
routes to be advertised you will have to enable these networks underneath the 
“router rip” command.
I’m pretty sure that the suppressing null update has something to do with split 
horizon being enabled, can you post your RIP debug here?
 
From: [email protected] 
[mailto:[email protected]] On Behalf Of piyush dwivedi
Sent: Thursday, April 15, 2010 9:26 PM
To: [email protected]
Subject: [OSL | CCIE_RS] RIP(validate source update)
 





Hi All,

I have 2 questions on RIP,

1) When i enable no validate source update on the router is it necessary to 
enable it on the other end for e.g if two router R1 and R2 are peering and 
running RIPv2, R1 has 10 loopbacks configured, can i get them propagted to R2 
without including the network statement on R1. Can i do it by enabling no 
validate source update?/????

2) When we debug ip rip events and we see suppressing null update , what does 
that mean and what is the significance?

 

Hoping to hear from you.

 

Regards

Piyush Dwivedi

 

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