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8-11
Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x
OL-9285-05
Chapter 8 Troubleshooting Ports
Overview of the FC-MAC Driver and the Port Manager
Examples of when to use these commands include:
• An Fibre Channel port fails to move to the up state after such events as link failures, admin-up
operations, or new connections.
• Unexpected link flaps.
• The port moves to “error disabled” state.
Maintain a set of information for the module before these problems occur (if possible) and then gather
another set of information after these problems occur.
Useful Commands at the FC-MAC Level
Troubleshooting a port problem involves analysis of the debug facilities provided by the FC-MAC driver,
or the FC-MAC2 driver in the case of the MDS 9120, MDS 9140, MDS 9216i, and the MPS-14/2
module. Table 8-2 lists several CLI debugging commands at the FC-MAC level.
Note You must use the attach module CLI command to access these FC-MAC show commands.
Note Use the fcmac2 keyword for the MDS 9120, MDS 9140, MDS 9216i, and the MPS-14/2 module.
Table 8-2 Useful FC-MAC Port Commands
CLI Command Description
show hardware internal fc-mac port port
link-status
Performs a series of checks to isolate the problem.
show hardware internal fc-mac2 port port
link-status
show hardware internal fc-mac port port
port-info
Provides the current state and configuration of the port.
show hardware internal fc-mac2 port port
port-info
show hardware internal fc-mac port port
statistics
Gives all non-zero statistics for the port.
show hardware internal fc-mac2 port port
statistics
show hardware internal fc-mac port port
gbic-info
Displays the current state of the SFP.
show hardware internal fc-mac2 port port
gbic-info
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