From: Kelvin Yeo (kelvinyeo24@yahoo.com.sg)
Date: Mon Nov 03 2008 - 10:28:12 ARST
Hi GS,
I think I got the reasoning. In additionally to split horizon over the same
link, RIP also look into the RIP database before making an advertisement
over the other (equal hop) parallel link. If Indeed that is also a reachable
path to the destination, it will not advertise over the other link.
To verify, I did an off-set on router A outgoing interface to remove the
equal path (in rip database) in router B. Debug ip rip indeed shows B
building sent updates.
Anyone can verify?
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Kelvin Yeo
Sent: 03 November 2008 19:55
To: ccielab@groupstudy.com
Subject: confused over RIP
Hi GS,
I have a simple setup to test split horizon between 2 routers w RIP.
Router A (with a Lo) is parallel connected with serials to router B. rule of
split horizon is avoiding problems caused by including routes in updates
send to the gateway from which they were learned. As such, B will not
re-advertise Lo back to A over its learned serial link. But my question is;
why isnt the Lo advertise over the other serial back to A to form a loop?
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