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Cisco Bug: CSCvv35980 - Autonegotiation doesnt get disabled , SFP connected port Doesnt come up

Last Modified

Aug 17, 2020

Products (1)

  • Cisco Catalyst 9500H Series Switches

Known Affected Releases

16.9.5

Description (partial)

Symptom:
Catalyst 9500-24Y-4C running 16.9.5

Conditions:
Issue seen with 16.9.5 , where the SFP connected port doesnt come up with Auto negotiation enabled.

The port comes up if no speed nonegotiate is entered followed by speed negotiate.

However, once the port is shut down , the port transiltions to Autonegotiate and the same commands have to be added to bring the port up

The SFP used is 1G ,GLC-LH-SMD
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