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Friday, January 14, 2011

7945 phones not being able to download files (ringlist, phone config file, etc) from TFTP

New cm 8 install and I'm having issues with the 7945 phones not being able to download files (ringlist, phone config file, etc) from TFTP. We think it is related to ITL and the security by default. My CM is setup with system>server set as IP address. Our voice vlan dhcp scopes are setup with IP addresses for the option 150 values. When we look at the phone, under the security section and ITL section we see the TFTP server is referred there as the FQDN. We think our prob is the dhcp scope is IP and its not matching the ITL value. We've tried deleting the ITL from the phone and restarting the TVS service but still no luck. Has anyone dealt with this or understand what is going on?

Tips:

The problem was with the OU for the call manager exceeding 64 characters. When we did a "show ITL" on the SSH session tocall manager it showed a wierd OU which had more than 64 characters. We were not expecting such an issue would cause a problem with TVS which is a newly added feature security feature on call manager 8..

Now we have a defect filed for this problem.The call manager would accept an OU having more than 64 characters but in this case TVS would never work properly. Till the time certificate for TVS is not generated properly the initial trust list would just be like a corrupt file causing random issues with config download. If we have issues like this its recommended we take a an output for "show itl" and "show ctl".

Also make sure that we are able to download SEP.cnf.xml.sgn and make sure that the phone is able to down load the signed file from the call manager as well.The initial troubleshooting would also include regenerating TVS certificate on the call manager.

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