Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements
Users might experience few discrepancies in Search results. We are working on this on our side. We apologize for the inconvenience it may have caused.
New Member

Number of Servers in CM cluster

Hi,

Pls confirm the total number of servers in a Call Manager Cluster is 8 or 9. Is it 1 publisher + 7 Subscribers OR 1 Publisher + 8 Subscribers?

1 ACCEPTED SOLUTION

Accepted Solutions
Hall of Fame Super Red

Re: Number of Servers in CM cluster

Hi Krishna,

Good question! (1 Pub + 8 Subs)

The following guidelines apply to Cisco Unified CM Release 6.x:

•Within a cluster, a maximum of 8 servers can be enabled with the Cisco CallManager Service. Other servers may be used for more dedicated functions such as TFTP, publisher, music on hold, and so forth.

Have a look at this design;

Figure 8-6 1:1 Redundancy Configuration Options (#5);

Cisco Unified Communications SRND Based on Cisco Unified Communications Manager 6.x

http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/srnd/6x/callpros.html#wp1043559

Hope this helps!

Rob

4 REPLIES
Hall of Fame Super Red

Re: Number of Servers in CM cluster

Hi Krishna,

Good question! (1 Pub + 8 Subs)

The following guidelines apply to Cisco Unified CM Release 6.x:

•Within a cluster, a maximum of 8 servers can be enabled with the Cisco CallManager Service. Other servers may be used for more dedicated functions such as TFTP, publisher, music on hold, and so forth.

Have a look at this design;

Figure 8-6 1:1 Redundancy Configuration Options (#5);

Cisco Unified Communications SRND Based on Cisco Unified Communications Manager 6.x

http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/srnd/6x/callpros.html#wp1043559

Hope this helps!

Rob

New Member

Re: Number of Servers in CM cluster

Hi Bob,

Thanks for the comments.So can I have 1P + 8 Sub + 1 TFTP + 1 MOH ( total 11 servers) in a cluster?

Re: Number of Servers in CM cluster

Hi Kirshna,

To add to what Rob has mentioned, you can have 1PUB + 8 SUB in a cluster which can register the IP Phones and do call routing functoinality.

In addition to these servers you can have more servers which would be installed as subscribers, but not doing call routing [phones can't register to these phones]. These additional servers can act as a dedicated TFTP server or Dedicated MoH server i.e. dedicated servers running specific service.

Thus 1+8 limit applies for the call routing servers.

-> Sushil

Hall of Fame Super Red

Re: Number of Servers in CM cluster

Hi Krishna,

Yes, that configuration would be fine :) The total number of 11 still only includes 8 Call processing servers.

Hope this helps!

Rob

156
Views
0
Helpful
4
Replies
CreatePlease to create content