P

3 Messages

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90 Points

Fri, Jul 2, 2021 7:17 PM

ICX-7750 SSH sessions terminate unexpectedly several times in a row

This is an intermittent issue. Our 7750 switch will unexpectedly terminate a authenticated SSH session, sometimes several times in a row. Debugging SSH sessions show the log:

Security: SSH logout by un-authenticated SSH user from src IP x.x.x.x from src MAC xxxx.xxxx.xxxx from PRIVILEGED EXEC mode using RSA as Server Host Key.

The drops can happen several times in a row, even during the authentication process.  Just now, i've had a console session going for over an hour.  It's really random and weird.

Accepted Solution

Employee

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189 Messages

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3.3K Points

5 m ago

Hey Patrick, 

8030 is no longer being actively patched for ICX7xxx devices. I would recommend upgrading to 8090k. However, you will need to upgrade to 8080f (non-UFI - the same image format as 8030) and then upgrade to the 8090k UFI image. You could certainly open a case (see my signature) to get assistance with this. 

Employee

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189 Messages

 • 

3.3K Points

5 m ago

Hey Patrick, 

What code are you on (show version)? We have had some SSH fixes. If you aren't already there, I would recommend moving to target path 8090k. 

3 Messages

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90 Points

5 m ago

 SW: Version 08.0.30gT203 

3 Messages

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90 Points

5 m ago

Ok, thank you for the tip.

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