From: Mohamed T. Kondela (mtaib@sagia.gov.sa)
Date: Wed Jun 14 2006 - 17:06:34 ART
If you are doing IEWB lab 2, i think there is a RPF failure on R3, did you check their support forum for LAB 2..?
Regards
________________________________
From: nobody@groupstudy.com on behalf of Julius Kinsler
Sent: Wed 6/14/2006 9:57 PM
To: srdja blagojevic; Aamir Aziz; Bob Sinclair
Cc: ccielab@groupstudy.com; bmcgahan@internetworkexpert.com; rocco ******
Subject: RE: Multicast question
I may be wrong about this but I believe this is errata I banged away at
that problem for hours and couldn't get it to work others I have spoken
to were in the same boat, I believe this issue has a trunked ethernet
interface on two different vlans one shows up on the OIL and the other
never does, Is there some issue with ehternet interfaces configured in
this manner and PIM sparse mode? the other is the one you need to be on
the OIL for this to work. The upstream router did have pim SM enabled on
it. If you move the join-group to the next upstream router it would work
no problem on that subinterface it would not. Cant remember a lot of the
other details. Not sure what needs to be done here but I would love to
know as well. This was discussed about a month ago, 5/20 to be exact,
amongst rocco and the board and there was never a resolution. I would
search the archives for this one to check out the details he posted
title is "multicast problem".
Julius
Mohamed T. Kondela
Senior Network Engineer
IT Dept.
Fax: 4473037 x 303
mtaib@sagia.gov.sa
Saudi Arabian General Investment Authority
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-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
srdja blagojevic
Sent: Wednesday, June 14, 2006 1:29 PM
To: 'Aamir Aziz'; 'Bob Sinclair'
Cc: ccielab@groupstudy.com
Subject: RE: Multicast question
Aamir,
from what you said, it seems that is something wrong with your shared
tree.
You should check sh ip mroute (for your group 228.28.28.28) on router
who have igmp join group command, and find out if the output seems ok
(i.e. is input interface as expected (toward RP), is OIList as expected
(interface that have igmp join group command)). If everything is as you
expected, then you should go to its upstream neighbor and find out if
his sh ip mroute is as expected (and so on till you reach RP)). At first
hop that you notice some unexspected behavior try to find out what is
wrong with debug commands (usually debug ip pim and debug ip mrout
should be enough).
I this doesn't help, post your multicast config and sh ip mroute from
your's routers so maybe we can try to understand what is wrong with this
setup.
hth,
srdja
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Aamir Aziz
Sent: Wednesday, June 14, 2006 18:54
To: Bob Sinclair
Cc: ccielab@groupstudy.com
Subject: Re: Multicast question
hi there
i am basically doing IE vol1 lab 2 task, the interfaces are configured
as Sparse mode with ip pim rp address command so when i do the show ip
pim rp mapping, it shows me RP mapping meaning it can reach RP so what
to do, which command to give on this router to check this problem?
thanks
Aamir
On 6/14/06, Bob Sinclair <bsinclair@netmasterclass.net> wrote:
>
> Hi Aamir,
>
> If your outgoing interface list is null, then I would first ask
> whether the group is being destributed in Dense Mode or in Sparse
> Mode. You can easily tell by looking for the D or S flag on the the
> of the first line of the (*,G) entry.
>
> If you are doing Dense Mode and the OILIST is null, then that means
> you have no PIM neighbors and you have no connected clients. Check
> your
> configuration: for example, show ip pim neighbors.
>
> If you are doing Sparse Mode and your OILIST is null, then it means
> you have not recieved an IGMP or PIM join on any interface. Check
> that downstream routers have clients and know how to reach the RP.
>
> HTH,
>
> Bob Sinclair
> CCIE #10427, CCSI 30427
> www.netmasterclass.net
>
>
> ----- Original Message -----
> *From:* Aamir Aziz <aamiraz77@gmail.com>
> *To:* ccielab@groupstudy.com
> *Sent:* Wednesday, June 14, 2006 12:12 PM
> *Subject:* Multicast question
>
>
> Hi guys
>
> i have a question, lets say i configure multicast on couple of routers
> and at the far end router i give the igrp group 228.28.28.28 command
> and do a ping from other router and it doesnt ping and on this router
> where i do ping i do show ip mroute and outgoing interface of
> 228.28.28.28 is null, what is the first thing to check??
>
> thanks
> Aamir
>
> ______________________________________________________________________
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