Brocade switch port offline and in “No light” state with Rx power showing as -inf
Applies to
- ONTAP 9
- Brocade
Issue
- Switch port state shows as
No_Light
underswitchshow
output:
Index Port Address Media Speed State Proto
==================================================
1 1 XXXXX id N4 No_Light FC
portshow
of the affected port reportsOffline
status:
portshow 1
portDisableReason: None
portCFlags: XXXX
portFlags: XXXX PRESENT LED
LocalSwcFlags: 0x0
portType: 18.0
POD Port: Port is licensed
portState: 2 Offline
Protocol: FC
portPhys: 4 No_Light portScn: 2 Offline
port generation number: XXXX
state transition count: 12
sfpshow
reports Rx state as-inf
:
RX Power: -inf dBm (0.0 uW) 1.0 uW 6550.0 uW 49.0 uW 1100.0 uW
TX Power: -6.2 dBm (239.7 uW) 50.0 uW 700.0 uW 100.0 uW 600.0 uW
fabriclog
indicates that the port flapped and wentOffline
Switch 0; Sun Oct 22 20:28:32 2023 GMT (GMT+0:00)
20:28:32.074305 SCN Port Offline;g=0xa8d2 D2,P0 D2,P0 1 NA
- SFP and cable have been replaced on the switch side, but that did not help.