[cisco-voip] MultiCast routing

[James.Brown at barclayswealth.com]

Scott,

Is your MMOH source an SRST gateway. We discovered a bug (TAC Case613588103) affecting all versions of IOS whereby you can't specify a loopback as a source for your MMOH.

i.e. ip source-address <IPAddress_Of_Non_Loopback> port 2000
Otherwise, I would approach this by troubleshooting as a data problem. Ping the MCast address and perform a series of "show ip mroute" to see whether an S,G entry is formed. Which router is your Rendez-Vous point and does this learn about your MMOH sources via MSDP (sho ip msdp sa-cache)?

Hope this helps

James.

________________________________
From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of John.VanLaecke at ghd.com
Sent: 20 September 2010 01:55
To: Scott Voll
Cc: cisco-voip-bounces at puck.nether.net; cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] MultiCast routing

Scott,

Try putting ip pim-sparse ont he trunk / routed interfaces and then put ip pim rp-add back to the MOH source


Ip pim rp-address on the MOH source  as the loopback ip

then every other device use the same..


in the telephony service use the moh route information as 1 hope to the voice binding address.

then this should work


Regards,

John Van Laecke
Network Administrator

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From:   Scott Voll <svoll.voip at gmail.com>
To:     cisco-voip at puck.nether.net
Date:   18/09/2010 08:44 AM
Subject:        [cisco-voip] MultiCast routing
Sent by:        cisco-voip-bounces at puck.nether.net

________________________________



So I'm messing around with Multicast.

Network looks like this:

MMoH -- | -- 4506 -- 3845 -- 2821 -- PRI outside
              |-- 3750 -- |

The 4506 and the 3750 are setup in HRSP.

I have IP Multicast routing setup the whole way through and I can see the Multicast via a show ip mroute.  But from the outside I'm not getting MoH.

Any ideas as to why I'm not getting the MoH?

Thanks

Scott

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