Cat3750 SSH problem

Unanswered Question
Nov 5th, 2008

Hi all,

I have a stack of 5 Cat 3750 switches which I just upgraded to SW version 12.2(46)SE. The stack performs fine under the telnet transport however when I enable SSH the management becomes very sluggish or slow. I have the same setup on a stack of test switches and I have not encountered this issue. The logs on the stack show the following:

Nov 5 10:40:11: %SCHED-3-THRASHING: Process thrashing on watched message event. -Process= "SSH Process", ipl= 6, pid= 264

-Traceback= D79168 D798B4 15D02CC 15D0654 17E04EC 17E0F78 17E19D4 17E250C 17E25E0 19C424 19C688 19CDC4 19CC70 D30A90 17E58FC 17E61E8

I see this is a known bug CSCin64958, however my version of code should not contain this bug. Has anyone encountered this issue? I would like to enable SHH on all my switch stacks but feel this is a major obstacle. Thank you.

I have this problem too.
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agivens02 Wed, 11/05/2008 - 11:08

Thanks for your response. I just noticed that my test stack(which has not encountered this issue) is actually 12.2(44)SE3. I am going to put this version on one of my production stacks and see if this solves the problem. I will let you know if this release works. As of now my test stack with 44 has been completely stable.

satish_zanjurne Wed, 11/05/2008 - 11:28


1.I will suggest to use 12.2(25)SEE2 , quite stable.

2.I have configured SSH on Catalyst 3750 with IPBASEK9/IPSERVICEK9 , on 12.2(25)SEE2 , for many switches, trust me it works fine.

3.Also use "transport input all" , just to test it.

HTH..rate if helpful..

agivens02 Wed, 11/05/2008 - 13:26

Thank you Satish. 12.2(25)SEE2 will be the next one I try since you are using it and know it is stable on many switches. Right now I have the 44 installed and set to reload early tomorrow morning. I will probably let this one "burn in" for a week or so and see what happens before I continue. Thank you for your time and assistance.

agivens02 Tue, 11/11/2008 - 05:56

Code version 12.2(44)SE3 appears to be stable and has shown very little in the way of "sluggishness". I absolutely do not recommend using the 46 version if you intend on enabling SSH. Thank you to all who responded to this issue.

morioka Tue, 03/17/2009 - 15:50

Does anyone know if 12.2(50)SE solved the SSH problem?


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