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Cisco Bug: CSCun61582 - sshd is in over state and unable to ssh to GGSN/PGW Combo

Last Modified

Jan 31, 2017

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

15.0(1) 16.0(1)

Description (partial)

Symptom:
Customer Network Norway experience this same issue in their GGSN ASR5K chassis. They could not access to the the chassis using SSH when sshd task became over state.

 ******** show version verbose *******
Active Software:
  Image Version:                  14.0 (51375)
  Image Description:              Production_Build
  Image Date:                     Tue Aug 27 18:21:57 EDT 2013
  Boot Image:                     /flash/production.51375.asr5000.bin

[local]ulvggsn# sho task resources | grep -v good
Monday March 31 23:56:41 CEST 2014
                   task   cputime        memory     files      sessions
 cpu facility      inst used allc   used  alloc used allc  used  allc S status
----------------------- --------- ------------- --------- ------------- ------
 8/0 evlogd           0 0.1%  95% 82.07M 70.00M   20 4000    --    -- -   warn
 8/0 sshd       8005380 0.0%  30%   144K 15.00M  204  100    --    -- -   over
Total               295 758.79%   37.96G        6499       584k
  Kernel Version:                 2.6.38-staros-v3-hw-32
  Kernel Machine Type:            i686

Conditions:
Currently in ASR, the maximum number of ssh-connection accepted by sshd daemon is around 40 per minutes. If the number of ssh-connection exceeds this limit, then the new connection will not be accepted. This is the reason why chassis can't be accessed using SSH.
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