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Cisco Bug: CSCuw24943 - mGig speed downshifting to 5G with "speed auto 10000" config

Last Modified

Feb 03, 2017

Products (1)

  • Cisco IOS

Known Affected Releases

16.1(0)

Description (partial)

Symptom:
On multi gig port, with 100 meters cable port will not come up with 10G speed 
with out of box config instead it will downshift to 5G speed,but when configured 
one end with "speed auto" and the other end with "speed auto 10000", it should 
not downshift to 5G speed, but it is downshifting to 5G speed.

Conditions:
Issue will be seen only with 100 meters cable and when one end of the port is 
configured with "speed auto" and other end with "speed auto 10000"
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