I/G/C/B/A-Series f/w 6.61 SSH Command Output is Slow

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Article ID: 16032 

I-Series, firmware and higher
G-Series, firmware and higher
C5-Series, firmware through 6.61.xx (e.g.
C3-Series, firmware and higher
B5-Series, firmware through 6.61.xx (e.g.
B3-Series, firmware and higher
A4-Series, firmware through 6.61.xx (e.g. 

Upgraded to the 6.51 or 6.61 firmware line. 

Using SSH access, the output of 'show' commands takes noticeably longer.
For example, a 'show port status' and 'show support' might take 6 seconds with 6.42 firmware, but 35 seconds with 6.61 firmware.
Telnet and Serial Console access respond well, with any firmware version. 

Due to government certification requirements, the SSH activity logging has been made more robust.
This affects the response time regardless of whether or not the Secure Logging functionality has been user-enabled. 

For the I/G/C3/B3-Series, Functions as Designed (FAD).
For the C5/B5/A4-Series, upgrade to firmware or higher.
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Posted 4 years ago

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