[cisco-voip] ITL issue - incomplete ITL files cached on TFTP ?

[Justin Steinberg]

Worked on an upgrade last night from CM 7.1 to 8.5.

After the upgrade I am having some ITL issues and think I have a couple
ways to work this out but wanted to run this past the group as I haven't
seen anyone with a specific issue like this.

CM 8.5.1su2 with three CUCMs running CallManager & TFTP service

What is not working:
-Corporate Directory - I am receiving host not found.  I verified on the
phone console logs that I am having a TVS/ITL issue.
-When I look at the contents of the ITL file on the phone LCD, I am only
seeing entries for TFTP and TVS on the server that TFTP is pointing to.  I
do not see any entries for other cluster nodes

What is working:
-TFTP downloads (ring tones, etc) and TFTP config changes
-'show itl' from CLI is showing verification is ok on all nodes

When I do a TFTP get and download the ITL file from CUCM and compare the
Md5 with the phone things match.  Show ITL on the CLI shows verification is
ok.   However, if I open the ITLSEPxxxxx.tlv file in notepad, I am not
seeing all of my servers listed in the ITL file.   However, when I do a
'show ITL' from the CLI, all the servers show up in there.  It is almost
like the TFTP server has old versions of the ITL file (based on
switch-version times? etc) and was not updated as other subs went through
the switch-version from 7.1 to 8.5.

On a hunch, I restarted the TFTP service on a sub that no phones actually
use for TFTP.  After restarting the TFTP service, if I download the
ITLSEPxxxx.tlv file and do a MD5, the value changed from pre-TFTP service
restart.  Now when I open the file in notepad, I see all of my CUCMs listed
in the ITL file.

My question is, can I just restart the TFTP service on the sub that my
phones are actually using for TFTP?    I am thinking the TFTP restart will
cause the ITL to update (and include the other cluster nodes) but I am not
sure whether the phones will then fail with ITL mismatch or whether the
phones will update their ITL file and now include the other servers.

I am also thinking of implementing the rollback to PRE 8.0 service
parameter, resetting the phones to clear the ITL and then restart the TFTP
service.

Any thoughts on whether restarting the TFTP service on the node that phones
are using for TFTP will just update the existing ITL the phones use with
the other CM nodes or whether that will in effect create an entirely new
ITL which would then require manually deleting the ITL files ?

Thanks

Justin
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