Re: Multicast question

From: Bob Sinclair (bsinclair@netmasterclass.net)
Date: Wed Jun 14 2006 - 13:47:20 ART


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
  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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