Redundant MOH Server and multicast addressing

Per SRND:
http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_implementation_design_guide_chapter09186a00806e8c28.html#wp1043768
I want to use the 2nd method:
"Configure separate media resource groups (MRGs) for the same MoH server, with one MRG configured to use multicast for audio streams and the second MRG configured to use unicast. "
as well as use redundancy. My questions is:
Can I use the same multicast address (ie 239.1.1.1) for primary and backup moh server or do I need to put in a 2nd multicast address (ie 239.1.1.2) on the backup MOH server.
Thanks

Maybe for second Multicast MOH server, start at 239.1.10.1 or like 239.1.1.50.
Sankar is right, but if you add multiple audio source files and have like 4 multicast audio sources then it may start higher up for the audio source you are using.
In my time working on fixing systems I've seen people don't maintain/delete old audio sources so starting second MOH server at 239.1.1.11 could cause problems/conflicts potentially.
It would also be nice if they displayed the mcast address used for each audio source in CCMadmin so admins could see it easily without having to figure it out. Or for people who aren't aware of how the addresses increment per codec/audio source.

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Thank you for the reply, I will follow and let you know. Proabably be next week sometime before I'm able to try though. So look for a reponse then. Thank you again.
Jeff
OR...
You can use the much more simple, much more reliable, and much more proven method of:
Install new server as a replica of the old.
Replicate.
Configure new server as upstream server.
Point clients to new server.
Turn off old server after all clients have redirected to the new server.
For everybody that has tried the backup/restore the database procedure described above, they have encounted complications of one form or another.
WSUS has a built-in and fully supported comprehensive replication capbility. use it! :-)
Lawrence Garvin, M.S., MCITP:EA, MCDBA, MCSA
Microsoft MVP - Software Distribution (2005-2012)
My MVP Profile: http://mvp.support.microsoft.com/profile/Lawrence.Garvin

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you (normaly) just have to :
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De : Daniel[SMTP:[email protected]]
Répondre à : Daniel
Date : vendredi 18 juin 1999 13:08
A : [email protected]
Cc : Jose Ignacio
Objet : 1) Changing name and IP address of an AIX 4.2 Server 2)
Using NAT to reach forte
Hello Forte Users :
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e-mail: [email protected])
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Redundant MOH Server and multicast addressing

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