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The output of the show interface status command does not display the type of GBIC in Cisco Catalyst 6500 switches that run Cisco IOS Software

Core issue

The media type does not appear, or is blank in the output of the show interface status command. However, the interface works fine and there are no connectivity issues.

These are some of the reasons for this problem:

  • A non-Cisco Gigabit Interface Converter (GBIC) is used.
  • The GBIC contains some erroneous reading of the IDPROM.
  • The interface is configured as a Layer 3 (L3) interface.


Verify the serial number on the GBIC to ascertain that a Cisco GBIC is used.

If the switchport command is issued to configure the interface as an L3 interface, physically take out the GBIC and then insert the GBIC back into the slot. Then issue these commands:

These commands must now display the GBIC type.

Version history
Revision #:
1 of 1
Last update:
‎06-22-2009 04:40 PM
Updated by:
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