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Oracle Fibre Channel (FC) SAN Cisco Switch - How to Reset / Disable and Enable a FC port (Doc ID 1579106.1)

Last updated on NOVEMBER 21, 2014

Applies to:

Cisco MDS 9124 24P Multilayer Fabric Switch - Version All Versions to All Versions [Release All Releases]
Cisco SAN Switch Hardware - Version Not Applicable to Not Applicable [Release N/A]
Information in this document applies to any platform.


The intent of this document is to provide the reader with the available commands to disable and enable a FC port on FC Cisco switch (reset the port or offline/online the port), so the device connected to that port can login into the fabric again.

This is a basic troubleshooting procedure when a device connected to the SAN is not available on the FC switch.

On this example on a CISCO MDS 9124 FC switch, initially, 'show fcs database' no longer see PWWN of Tape library device . fc1/8 port now shows Type "Unknown" and None for PWWN.

Interface fWWN Type Attached-pWWNs
fc1/2 20:02:00:0d:ec:9a:2d:40 F 21:00:00:24:ff:08:ce:5b
fc1/4 20:04:00:0d:ec:9a:2d:40 F 21:00:00:24:ff:08:cc:76
fc1/6 20:06:00:0d:ec:9a:2d:40 F 50:00:00:e0:d0:f6:8a:87
fc1/8 20:08:00:0d:ec:9a:2d:40 Unkonw None



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