No. of Pub and Sub for 5.x and 6.x

Madhusudhan Rao M · ‎04-22-2010

Hi all,

Does anyone have an idea of how many Publisher and Subscriber will be supported for Callmanager Versions 5.x and 6.x

william_chua · ‎04-22-2010

CUCM supports a maximum of 20 nodes in a cluster (1 Publisher and 19 Subscribers).

Madhusudhan Rao M · ‎04-22-2010

hi,

Is it same for both CallManager versions..since i heard that CCM 5 supports 1 Pub and 8 Sub..total of 9

Ayodeji Okanlawon · ‎04-22-2010

Regardless of the CCM version these are the facts

1. A total of 20 servers are supported in a cluster

2. Only 8 can be running CCM service at the same time

3. Only 1 can be a publisher

HTH

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william_chua · ‎04-22-2010

Here's the exact statement from cisco documentation:

"A CUCM cluster can have up to 20 servers in it. Only one publisher server is allowed in the cluster. The publisher houses the read/write copy of the database. Up to eight subscriber servers can be in the cluster, with the restriction that only four of the subscriber servers can perform active call processing. If more than four subscriber servers are used in a cluster, the additional servers are dedicated standby servers in case the active subscriber server is not available. The other 11 servers in the cluster can be responsible for various services, including TFTP and media resources (conferencing, music on hold, transcoding)."