Can't get CUCM10.5.2 to log into the sftp/ftp

[mark-meyers]

Good morning and a very happy Friday Cisco community.  Have a weird one here, doing an upgrade for the client UC system(CUCM, CUC, CER and IM&P) from 10.5.1 TO 12.5.  But I had to upgrade the CUCM to 10.5.1 to 10.5.2 first so It can be upgraded to 12.5, and that has been done.  So Cisco has UC Pre-check COP files that can be ran on CUCM, CUC IMP CER.   So the issue is this on Unity, CER and the IMP I can load the COP and IOS from, OS admin page and the CLI (utils system upgrade initiate) and they see the sftp and the PCD and are able to log in.  But on the CUCM I keep getting user name or password invalid error when I try from OS admin, CLI and PDC discovery and I have made sure that im not fat fingering the keys.  Any thoughts as to what I should check on CUCM or what the problem might be?  As you can see from the capture that the CUCM at .10 is getting the error and .12 the IM&P is able to log into the PCD and can log into the sftp and it the same if i try from OS admin.  Any thoughts?

[Stephanie Knoop]

I'm stumped, but did you check your SFTP server utility and ensure there is nothing there to prevent the the CUCM server IP from connecting?  I'd imagine a different error, but that's the only think I can thing of.  Did you try changing the password for the user on the SFTP server and using different or no special characters in case that could be an issue?

[Elliot Dierksen]

The SSH client in the VOS (Voice Operation System) VM's is quite particular about key exchange and encryption methods. Here are the items I add to the sshd_config of a server I want to use with a VOS VM.

KexAlgorithms +diffie-hellman-group1-sha1
KexAlgorithms +diffie-hellman-group-exchange-sha1

Ciphers +aes128-cbc
Ciphers +3des-cbc

Note that 3DES is probably deprecated, so you could leave that out. These directives are written such that you should be able to append it to the end of the sshd_config file without impacting anything else that was in there. It will require a restart of ssh or a reboot.

[Rajat Kapoor]

You can check a particular process (show process Load/show process using-most cpu/memory) which might be stuck and you are into this Issue. I had been into this issue before.

Try restarting Cisco Tomcat