From: Bit Gossip (bit.gossip@chello.nl)
Date: Sun Apr 08 2007 - 05:25:50 ART
I guess that 2,4,5 are on the same LAN so 2 will still hear multicast
updates from 4 and thus you see the route to 4.4.4.4
On the other end, 4 will not hear any updates directly from 2 which unicasts
only to 5; then due to split-horizon, 5 will not announce on the LAN what it
hears from this same interface with the results that 4 has no routing
information for 1,2,3
So your ping gets to 4 but there is no way back
HTH,L
----- Original Message -----
From: "sirus MOGHADASIAN" <cyrus.mgh@gmail.com>
To: "Cisco certification" <ccielab@groupstudy.com>
Sent: Saturday, April 07, 2007 11:01 PM
Subject: RIP odd behaviour,please help
> I have simple scenario like this:
>
>
> 4-----|--------2--------- 1---------- 3
> 5----|
> router 4 & 5 & 2 are in a one segment and router 2 connects to
router
> 1.router 1 connect to router 3
>
> when RIPv2 configured ,every thing is all right but when I configure thin
on
> router 2
>
> passive-interface e0
> neighbor 5.5.5.5
>
>
> to restrict Router 4 not to see router 2 & 1 &3 routes
> Now I see routes to 4.4.4.4 but I cannot ping 4.4.4.4 from router 3.
>
> Can any one tell me why I cannot ping 4.4.4.4.?
>
>
>
> Cyrus
>
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