[cisco-voip] ITL question - MD5 mismatch

[Wes Sisk]

Jason is the authority but I can fill in a few points. Inline, ws.

On Feb 20, 2012, at 4:20 PM, Ed Leatherman wrote:

I'm walking through Jason Burns' ITL document over on cisco.com
https://supportforums.cisco.com/docs/DOC-17679 , using my 8.6.2-2000
lab CM.

Trying to compare the ITL files on my lab phones versus call manager/tftp:

http://i53.tinypic.com/jhdjc1.jpg

This is a new CM install. As expected, my 3 lab phones had old ITL's
and would not pull a tftp file. I wiped the ITL's on those phones and
now they register fine. I downloaded the ITLFile.tlv file from my tftp
server and checked the MD5 checksum against what the phone reports,
and also with the "show itl" CLI command. none of them match! But the
phone registers, no errors. 

ws: ITL mismatch will not affect registration other than the phone will not accept config file changes so it will not take changes to cm group.

Am I incorrect in my understanding that
the Hex string on the IP Phone screen is the md5 checksum of the ITL
file?

ws: the phones i've looked at yes. what model of phone and what load? we've seen where platform webpages displays the serial number (md5sum of the file) in decimal rather than hex:
CSCtr75672    OS Admin Cert Web Page displays serial numbers in decimal instead of hex

 Am I just comparing apples to oranges here somehow?
ws: the md5 hash of the ITL displayed on the phone should match the md5sum you calculate on the ITL file when manually downloading it.  One thing to note - the ITL file may be different for each TFTP server.  Which TFTP server did the phones use? Which TFTP server did you download your file from?  Does it make a difference if you use the binary option on your TFTP client?

Thanks!
-- 
Ed Leatherman
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