[cisco-voip] Cisco Unified Communications Manager 6 Failover

[Adam Frankel]

Cem,

 

>From your screenshots it looks like the System->Server are configured to use
hostnames but the phone is unable to resolve these hostnames to IP addresses
therefore the phone is registering to the TFTP server that it got as Option
150 from the DHCP server.  If you go to the "Status" page on the phone's web
page, you will probably see a DNS Timeout.  

 

You should consider changing the values under System->Server to IP addresses
or provide a DNS suffix to the phones through DHCP such that they can
resolve cm6012 and cm6011.

 

Thanks,

Adam 

 

From: cem caglayan [mailto:cem.caglayan at gmail.com] 
Sent: Wednesday, April 15, 2009 9:47 AM
To: Adam Frankel
Subject: Re: [cisco-voip] Cisco Unified Communications Manager 6 Failover

 

Adam,

I do not have expert knowledge on this topic, so i would like to describe my
situation again with picture illustrations.

we have a cm6011 named CM server acts as first node (as publisher) the ip
address is 10.0.255.251
and a cm6012 named server acts as second node (as subscriber).the ip address
is 10.0.255.252. (I have installed the CUCM 6.0 on this server myself. i
configured it as second node and no DHCP service activated.) 
by the way our default gateway's ip is 10.0.255.254
all the services are running on the first node (tftp,dhcp and others)

the picture link of servers:
http://img26.imageshack.us/img26/521/serverlist.jpg



In current structure, the second node is just an image of the first. As i
described before, when i make cm6011 offline, i can establish connection CM
via second node's ip (10.0.255.252). But the ipphones don't come online. 

According to your instructions; 
1)i configured a new CM group named "cm2" which only consists of the second
CM server. (The default CM group consists of both cm6011 and 6012) the
picture link: http://img26.imageshack.us/img26/9725/cm2x.jpg
2)i configured a new Device pool with selecting Cisco Unified Communications
Manager Group as the newly created CM group "cm2" (the picture link:
http://img91.imageshack.us/img91/4007/dvcepool.jpg

when i get to the phone's web page via it's ip address here is the info
below:


CallManager 1

	cm6012 


CallManager 2

	10.0.255.251 Active


CallManager 3

	10.0.255.254 


as you see, although CM1 is set to secondary node (cm6012) for my phone, it
still gets first node as active. 
if you look at the device pool picture, it indicates that there is currently
one member, i think this is because i configured my phone's Device pool as
cm2.

Thanks for your help.

Kind Regards.

On Wed, Apr 15, 2009 at 3:11 PM, Adam Frankel <afrankel at cisco.com> wrote:

Cem,

 

To get the desired behavior CM group should be an ordered list of the CM's
to which your devices, not just the secondary node.  After modifying the CM
group reset the phone so it can get its new config file to take the change.
Verify the correct Active and Standby CUCM's are listed on the phone's web
page and you should be good to go.   

 

I'm not clear on your other questions. 

 

Adam 

 

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