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New Member

Errors adding a subscriber to a CM 5.x cluster

Hello there,

I am adding a subscriber to a CM cluser in 5.13

I get the following error/screen

-----

COnfiguration validation with CM-PUB (10.11.1.110) failed

Could not send/recieved UDP packets to publisher on port 8500

-Is network connection to CM-PUB up?

-Is the MTU Size correct for this network

-Doe the network allow packet fragments

------

I can ping the servers,

any suggestions?

thanks!

16 REPLIES
New Member

Re: Errors adding a subscriber to a CM 5.x cluster

I rebooted the publisher and clicked passed the error again and this time it worked

New Member

Re: Errors adding a subscriber to a CM 5.x cluster

Hi,

I've the same problem. I tried rebooting publisher, and error still appears.

I've tried using a crossover cable between Pub and the new Sub, and nothing happens, so the switch is not the problem.

There is ping connectivity between servers.

Any idea?

Andres Pasten

Adexus S.A.

Cisco Employee

Re: Errors adding a subscriber to a CM 5.x cluster

did you created the SUB in the PUB config before installing it??

HTH

java

if this helps, please rate

HTH

java

if this helps, please rate

www.cisco.com/go/pdi
New Member

Re: Errors adding a subscriber to a CM 5.x cluster

Hi,

Yes, it was created.

The problem was the DNS config, because on Pub was enabled and not on Sub, because I received a warning that DNS doesn't have records for CCM servers.

Finally I've put on an isolated vlan pub and sub, and then the instalation worked fine because there was no DNS available.

It's a pity that the error message doesn't say anything about the DNS problem. It only indicates a problem with network, MTU and fragmentation.

See you.

Andres Pasten

Adexus S.A.

New Member

Re: Errors adding a subscriber to a CM 5.x cluster

Help I'm getting the same issue. I've rebooted the Publisher 3 times now. Both boxes are set to use the same DNS servers which have forward and reverse lookups.

I have even dropped the MTU down to 1400 on both.

Not sure what else to do.

New Member

Re: Errors adding a subscriber to a CM 5.x cluster

Hi,

The issue is related to the DNS servers, I couldn't set correctly customers's machines, so I moved Publisher and the new Subscriber to a vlan with no access to DNS server, and in the instalation procedure you skip the dns validation when it says that you cannot reach that server.

It's the only way it worked to me. The other option is to remove the DNS config in all servers before installing the new subscriber.

HTH

Andres Pasten

New Member

Re: Errors adding a subscriber to a CM 5.x cluster

How do I remove DNS client settings from the Publisher?

I am pre building this in a lab and trying to do this accross a simulate Branch VPN.

If I set my switch to have both subnets to get the intial sync completed would I be alright to the move it back to it's planned location.

New Member

Re: Errors adding a subscriber to a CM 5.x cluster

New Member

Re: Errors adding a subscriber to a CM 5.x cluster

I have removed all referneces to DNS and still no joy. Should I have a go at joining it on one switch, with two VLANs.

I just worried if it does work it wont help me find my issue.

New Member

Re: Errors adding a subscriber to a CM 5.x cluster

I had this issue in the installation of a new subscriber. I resolved the issue retyping the security password when fail the first time.

Ricardo

New Member

Re: Errors adding a subscriber to a CM 5.x cluster

I'll give that ago right now

New Member

Re: Errors adding a subscriber to a CM 5.x cluster

Still no joy

New Member

Re: Errors adding a subscriber to a CM 5.x cluster

if you have tried several times add the subscriber to cluster without success, maybe you are in a point that is necesary reinstall the subscriber again. Also, verify that versions of CallManager are identical (Publisher and the new Subscriber), network connectivity between them, that the name of Subscriber was added in the Publisher Administration (this is the first step when you go to install the server).

Ricardo

New Member

Re: Errors adding a subscriber to a CM 5.x cluster

I have added the Sub on to the Publisher, using the Web interface.

Do you have a guide for adding a Sub to a cluster?

Both my Call Managers came pre installed and were ordered at the same time. So I'd Hope they are the same version.

New Member

Re: Errors adding a subscriber to a CM 5.x cluster

In this page you can find the installation guides of all version of Cisco CallManager:

http://www.cisco.com/en/US/products/sw/voicesw/ps556/prod_installation_guides_list.html

For version 5.1(3):

http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/install/5_1/cmins513.html

When you are installing the CallManger you can see the version on the top of screen and with the Web Administracion in the menu About.

When you buy a Cisco CallManager it comes with the DVD of installation. Also, you need licenses for the Servers and IP Phones (DLUs).

I recommend you reading the installation guide, Cisco explain everything.

Ricardo

New Member

Re: Errors adding a subscriber to a CM 5.x cluster

Hi Martin,

both server's are in the same network? you are using a IPSEC tunnel? if the answer is yes, maybe you need to apply the following command to the wan interface:

"crypto ipsec df-bit clear"

Regards

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