From: Gregory Gombas (ggombas@gmail.com)
Date: Tue Oct 09 2007 - 10:43:37 ART
What effect will no ip directed-broadcast have on RIP updates? Even if
they were sent as broadcast as in version 1 or if you manually set it
to broadcast - I don't think that command would effect the RIP
updates.
Someone correct me if I'm wrong...
On 10/9/07, Eagle <ddycus@gmail.com> wrote:
> Two thoughts. Perhaps a bug in the "default passive-interface" feature
> you're relying on to set your interfaces to passive globally?
>
> Also, I can't tell from your config snippits what your broadcast
> configuration looks like. You might try adding "no ip directed-broadcast"
> to the individual interfaces that you don't want to send updates.
>
> Other than that, I am in agreement with you... looks like those statements
> shouldnt be in R1's table...
>
> -Eagle
>
> On 10/9/07, ccie1101 <ccie1101@gmail.com> wrote:
> >
> > Hi Grace,
> > Yes, your understanding is correct. Since we only want one
> > interface
> > on R2 to participate in RIP, therefore that particular interface will be
> > active and the others are passive as with the 'passive-interface default'
> > command.
> >
> > As for split-horizon, it is turned off when we do a encapsulation
> > frame-relay on the router. Therefore, I turned on split-horizon since I
> > need
> > this serial interface to send and receive updates on this serial
> > interface.
> >
> > The connection for this network is R2 --- serial interface --- R1.
> >
> > It really buffles me, anyone care to explain this ? Argggghhh ...
> > or
> > am i missing something here .....
> >
> > Thanks in advance,
> >
> > Cheers,
> > - ccie1101.
> >
> >
> > On 10/9/07, Grace Simon <SimonG@pcsystems.gr> wrote:
> > >
> > > My understanding is passive interface just stops it sending updates out
> > > of those interfaces.
> > >
> > > By configuring network 7.0.0.0
> > >
> > > You are telling the RIP process what networks to include in the updates.
> > >
> > > Split Horizon is stopping it from advertising a route that it learnt via
> > > that interface. If this router is a hub with two or more spokes then by
> > > disabling the split horizon you allow the routes to be passed from one
> > > spoke to the other.
> > >
> > >
> > > -----Original Message-----
> > > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> > > ccie1101
> > > Sent: Monday, October 08, 2007 8:31 PM
> > > To: Cisco certification
> > > Subject: Re: RIP Question across FR ......
> > >
> > > Hi GS,
> > > I have a RIP scenario here which is as follows . Here is my
> > > configuration :-
> > >
> > > R2
> > > --
> > > router rip
> > > version 2
> > > passive-interface default
> > > no passive-interface Serial0/1/0
> > > network 7.0.0.0
> > > no auto-summary
> > > !
> > > !
> > > int s0/0/0
> > > no ip split-horizon
> > >
> > > ------------------------------------------------------------
> > > R2#sh ip rip data
> > > 7.0.0.0/8 auto-summary
> > > 7.7.1.0/24
> > > [1] via 7.7.13.1, 00:00:16, Serial0/1/0
> > > 7.7.3.0/24 directly connected, Loopback0
> > > 7.7.13.0/24 directly connected, Serial0/1/0
> > > 7.7.30.0/24 directly connected, FastEthernet0/1
> > > 7.7.35.0/24 directly connected, FastEthernet0/0
> > > 7.7.100.0/24 directly connected, Serial0/0/0
> > > !
> > > ------------------------------------------------------------
> > >
> > > Now when I do a 'sh ip route rip' on the other end of the frame-relay
> > > link,
> > > I still see these
> > > networks that is connected to R2 even though all those interfaces are in
> > > passive-interface
> > > mode ....
> > >
> > > R1(config)#do sir rip
> > > 7.0.0.0/24 is subnetted, 6 subnets
> > > R 7.7.0.0 [120/1] via 7.7.13.3, 00:00:15, Serial0/0/0
> > > R 7.7.40.0 [120/1] via 7.7.13.3, 00:00:15, Serial0/0/0
> > > R 7.7.45.0 [120/1] via 7.7.13.3, 00:00:15, Serial0/0/0
> > > R 7.7.150.0 [120/1] via 7.7.13.3, 00:00:15, Serial0/0/0
> > >
> > > (1) Can someone explain if I am missing something here ?
> > > (2) Since this connection is across the frame-relay link, I have turned
> > > on
> > > split-horizon as the
> > > default mode for split-horizon is turned off when we use the command
> > > 'encap frame-relay' ....
> > >
> > > Thanks in advance,
> > >
> > > Cheers,
> > >
> > > ccie1101.
> > >
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