[cisco-voip] Cisco Unified Communications Manager 6 Failover

[Adam Frankel]

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 

 

From: cem caglayan [mailto:cem.caglayan at gmail.com] 
Sent: Wednesday, April 15, 2009 3:45 AM
To: Adam Frankel
Subject: Re: [cisco-voip] Cisco Unified Communications Manager 6 Failover

 

Hi Adam,


First of all thanks for your reply. At first, I have configured a CM group
(which i chose only secondary node as group member), then a device pool
which uses the brand new CM group. After doing these i have assigned my
phone to the new device pool. Everything went fine and my phone is up now.

Here are my concerns, i don't have opportunity to get first node offline at
the moment, because it's being used consistently. What happens if i pull the
LAN cable of the first node? I'm going to try it this weekend. 

So should i think like "when i pull the lan cable of the first node, the
phones which are assigned to the second node will be up" 

What if they do not come up? What way should i use??

Thanks for your help.

Kind Regards.

On Tue, Apr 14, 2009 at 3:39 PM, Adam Frankel <afrankel at cisco.com> wrote:

Cem,

 

You need to configure the Device Pool assigned to the device to have a
Callmanager group that includes the primary and secondary device.  Once the
phone is up check the phone web page to see what server is its current
Active and Standby CUCM. 

 

HINT:  If the servers are listed under System->Server as DNS/Hostname the
phones needs to be able to resolve these successfully otherwise they will
end up being registered to their TFTP server only.    If you cannot
implement name resolution, try changing these values to IP addresses.   

 

Adam

 

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of cem caglayan
Sent: Tuesday, April 14, 2009 3:02 AM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] Cisco Unified Communications Manager 6 Failover

 

Hi guys,

I'm desperate on this.. We have a 3845 voice gateway attached to two 7800
series call manager servers. Here is the deal; i would like to integrate
failover feature within these two 7800. I've searched all over the cisco
documentations but no use...

We already have an operating CUCM 6, besides yesterday i could manage to
setup second node. I can see the second node in CUCM 6 as subscriber in the
cluster. But when i pull out the first node's LAN cable, second one does not
automatically takes place as the first node and make a failover. All the ip
phones stuck, while trying to obtain IP address. Besides, when i give the ip
address (which was obtained when the first node is online) manually, the
result is the same, phones stuck. 

As i said, i couldn't find any detailed documentation how to make an
operating failover, the ones that i found was not enough for me to do the
job.

I am waiting for you guys to help on me.

Kind Regards.

Cem CAGLAYAN
Physicist - MIS Grad Student

 

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