Hi Piyush, "no validate source update" is applied to a RIP reciever and is used to accept routes from a RIP neighbor that is not in your interfaces subnet. Other RIP neighbors do not necessarily require it. The most typical application I know of is running RIP on a PPP interface that learns its IP address through IPCP (it installs it's IP address as a host route, ignoring the network mask of the peer) In order for it to accept the routes, it needs the no validate source update since the host route has a prefix length of 32 and the other end of the PPP link will not appear to be in that network.
1) No validate update source wont work there (I described the main use above) but one possibility is to redistribute connected and put in a routemap that matches your loopbacks address if neccesary (assuming you are trying to not use network statements) 2) I'm not sure about this and will leave it to others to answer but I'm pretty sure it occurs when you have RIP running on a loopback interface, the router doesn't need to listen to its own updates. Cheers, Adam On Fri, Apr 16, 2010 at 2:25 PM, piyush dwivedi <[email protected]>wrote: > 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 > > > Send free SMS to your Friends on Mobile from your Yahoo! Messenger. > Download Now! http://messenger.yahoo.com/download.php > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > >
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