Cisco Bug: CSCuq11006 - "[F0276][major]" event is marked as "[cleared]" before it is resolved.
Sep 03, 2020
- Cisco Unified Computing System
Known Affected Releases
Symptom: When cables of server ports are pulled out from Fabric Interconnect, a similar entry will be logged. %UCSM-3-LINK_DOWN: [F0276][major][link-down][sys/switch-B/slot-1/switch-ether/port-3] ether port 3 on fabric interconnect B oper state: link-down, reason: Link failure or not-connected However, a false "[F0276][cleared]" event might be logged after 20 to 30 seconds before the cable is plugged back. Conditions: The sequences of server port link status transitions work as follows. - When an "UP" port gets disconnected, it firstly makes a status transition to "Link Down". - When a port is at "Link Down" status, it then checks if a SFP is inserted. - If there is a SFP in, the port status remains at "Link Down" and the F0276 will not be cleared. This happens when the SFP Cable is plugged in at FI port and the SFP at IOM is disconnected. We raise the fault "Link down or not connected" and this fault is not cleared until we plug in the SFP back on the IOM port - On the contrary, if there is no SFP detected, the port status will transit from "Link Down" to "Sfp Not Present". This happens when SFP is plugged in at IOM and the other end is not plugged in at the FI port configured to be server. - As the port status is not "Link Down" anymore, the F0276 gets cleared.
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