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Cisco call manager

I have a scenario where there are five subscribers and one publisher call manager.If subscriber A's connectivity to publisher breaks, utils network connectvity in sub A fails with publisher, can a phone registered with sub A make and receive inter and intra cluster calls?Here calll manager services are disabled on publisher so will it have any effect on call routing outside and inside cluster?

3 REPLIES
Cisco Employee

Hi Basant,

Hi Basant, I am going to assume that there are no devices registered to the publisher server as you said. I couldn't understand your question exactly, so i will answer the question for two scenarios. 1. If the publisher server went down and all other server are still online and have connectivity to each other: call processing will not be affected. 2. If one subscriber loses connectivity to the other servers, but still has connectivity to the devices registered with it(for example: the server is located over WAN and the WAN goes down): calls will work only between devices registered on that specific subscriber. Hope that helped. Thanks, -- Nart - CCIE Voice
New Member

Thanks a lot Nomat . You

Thanks a lot Nomat . You cleared most of my doubt .You were absolutely right that no phones are registered on publisher.

WAN of Subscriber A to publisher was intermittently down. Secondly, on command line interface of subscriber A , utils network ping  Publisher ip was successful but utils network connectivity command gave the output that "Test failed.Could not send/receive UDP/RDP packets to the publisher".What is the function of this comand?

However, the publisher could be pinged from subscriber A and all other subscribers.Now what would be the effect on call routing intercluster/intracluster from the phones registered to subscriber A ?Should it beable to call phones registered on other 4 subscribers?Also, do the subscribers communicate to each other directly or only through the publisher?What is the effect of publisher  going down?Please explain the communication between all the nodes , what data do they exchange and what is their keepalive?

VIP Purple

Hi, [+5] to Nart. utils

Hi,

 

[+5] to Nart.

 

utils network connectivity checks the connectivity to first node in cluster.

 

further, from CUCM 6 onwards, User facing features have been introduced which can be changed while the publisher is down.

you can check find more details on link

 

https://supportforums.cisco.com/document/52421/troubleshooting-cucm-database-replication-linux-appliance-model

 

regds,

aman

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