Cisco Bug: CSCvu04483 - Downlink interface on C9200L may remain in looped back state after bootup
Oct 08, 2020
- Cisco Catalyst 9200-L Series Switches
Known Affected Releases
Symptom: On C9200L, - A copper port is Up even without connecting a cable. - If BPDU Guard is configured, the interface gets into err-disabled state. - On empty port, switch sees itself as CDP neighbor. Conditions: Issue is not seen on a switch which is up and running and can happen on any random port (only on ports where nothing is connected) after bootup. Issue is specific to C9200L switch and can happen on stand-alone or stack.
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Bug Details Include
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- Known Fixed Releases
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