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Resolution Guide : Brocade Switch Port is offline with No_Light state

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Category:
fabric-interconnect-and-management-switches
Specialty:
brocade
Last Updated:

Applies to

  • Any version of Fabric OS
  • Brocade

Issue

  • Portshow of the affected port reports offline status:

portshow 5
portDisableReason: None
portCFlags: 0x0
portFlags: 0x21     PRESENT U_PORT DISABLED
LocalSwcFlags: 0x0
portType:  26.0
portState: 2    Offline  
Protocol: FC
portPhys:  4    No_Light     portScn:   2    Offline   
port generation number:    748
state transition count:    11         

  • switchshow output shows the port state as No_Light:

Index Port Address Media Speed  State    Proto
==============================================
 ----- Truncated -----
   5   5   010500   id     4G   No_Light    FC  

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