ExtensionMobility in Cluster

[kiranjose]

I have installed CUCM 9 cluster and it is working fine but i dont know how to configure Extension mobility in cluster.Please give your inputs.Im not using DNS In my network.Without using DNS how we achieve Extension Mobility Failover

[Stephen Welsh · Accepted solution]

Hi,

If you have no plans to use DNS, then you could create 2 (or more) Extension Mobility service entries for all phones to use. Each entry pointing to a different CUCM node, ideally setting the name different so users understand why there are two listed (i.e. Primary and Backup)

The following Cisco document covers the configuration of Extension Mobility:

http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/7_1_2/ccmfeat/fsem.html

Thanks

Stephen Welsh

CTO

http://www.unifiedfx.com

[Ayodeji Okanlawon]

There are many resources online on how to configure EM. Please look here

http://www.youtube.com/watch?v=M50sykfNe5I

http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/7_1_2/ccmfeat/fsem.html

http://www.voicecerts.com/2010/06/step-by-step-guide-to-configuring.html

On EM failover/redundancy if you dont have a DNS server, then you will need a load balancer. If you dont have either then you cant configure EM failover

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[Gert Vanderstraeten · Accepted solution]

Hello Kiran,

You can use the IP address of the server that runs the ext mob service, not required to use the DNS name if you don't need redundancy between 2 servers. I've seen people configure 2 different services with 2 different IP addresses when they can not use DNS for whatever reason, not transparent for the end-users but it's a possibility.

See this document that will help and explains it step by step:  http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_tech_note09186a0080a80386.shtml

Gert

http://www.cisco.com/go/pdihelpdesk

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[Aman Soi · Accepted solution]

Hi Kiran,

You can configure two EM services pointing to two different nodes in a cluster on which EM service is runnning.

Secondly, u can use Server Load balancer with a virtual IP address pointing to two real IP addresses of CUCM servers on which EM is running.

regds,

aman

[kiranjose]

Thank you all.Thanks for the help.