[cisco-voip] CCM Publisher and subscriber

[Linsemier, Matthew]

When you say does not take over completely, do you mean that no services
work, or that some services (such as call setup/teardown), voicemail,
etc. work occasionally, just not for all phones?

 

A few things you should always do (when the CallManager Publisher is
available for you again, is the following:

 

1)       Under System server, make sure that each of your CallManager
servers is registered as an IP address. If you want to list it as a host
name, make sure that you update the Hosts file with it's IP address in
the Windows\System32\Drivers\Etc directory.  If you want to use
hostnames, do this on each server.

2)       Under System, CallManagerGroup, make sure that you have both
your Subscriber and Publisher in the group that you are using.  Also,
its usually a best practice to register all of your phones with your
Subscriber, rather then your Publisher, to reduce the overall load on
your Publisher.  If you have a lot of phones, you can implement multiple
Subscribers and a fallback Publisher, or you can create two CallManager
Groups and loadbalace by device.

3)       Under Enterprise Parameters, Change URL Help, URL Directories,
URL Information, URL Services to contain the IP address if you are not
using hostnames.

4)       I would run DBHelper when your publisher comes back online and
make sure that the databases are synced.  I have seen issues when the
databases are not synced, services fail during the downtime.  

 

If you are relying on DNS, sometimes this can cause issues.  IP
addresses or local hostnames are much more reliable.

 

Matt

________________________________

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Nesen Kisten
Sent: Friday, May 05, 2006 3:46 AM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] CCM Publisher and subscriber

 

 

Hi Guys,

 

When my CCM publisher goes down, my subscriber does not take over
completely,

i.e calls are affected, and services are unavailable, I am aware though
that under enterprise parameters the ip address is that of the publisher
therefore no ip phone services are available, and I cant change it to IP
address of subscriber since no updates can be done when publisher is
unavailable.

 

Is there a way around this ?, or is publisher subscriber config is not
correct.

 

Kind Regards

 

Nesen

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