redundancy in a cluster

[sarahr202]

Hi everybody.

Let say we have a single site and we want to provide CM redundancy. 

ipphones------sw-----(   CM Pulisher, CM sub1)

1)Let say we have configured the device pools for our ipphone where CM sub1 is the most preferred,. Can we configure CM publisher as a backup in case CMsub1 goes down ?

ipphones-----sw--( CM publisher, CM sub1, CM sub2)

2)Suppose we configure device pool for our ip phones where we have configured CMsub1 as the most preferred CM. Can we configure CM sub2 as a backup  for our ip phones in case CM sub1 goes down ?

thanks and have a great day

[Jaime Valencia · Accepted solution]

Answers is yes to both, you can configure up to three servers per CUCM group and choose the order in which phones should register to them

Sent from Cisco Technical Support iPad App

[Harmit Singh · Accepted solution]

Hi Sarah,

Just to elaborate on Jaime's rock solid answer, here is a link which talks about this in more detail:

http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/7_0_1/ccmsys/a02redun.html

HTH.

Regards,

Harmit.