Chapter 3 Troubleshooting
Diagnosing Problems
3-6
Catalyst 2970 Switch Hardware Installation Guide
OL-6422-01
The switch port is placed in
error-disabled state after SFP
module is inserted
Bad or non-Cisco-approved SFP
module.
Remove the SFP module from
the switch, and replace it with a
Cisco-approved module. Use the
errdisable recovery cause
gbic-invalid global
configuration command to
verify the port status, and enter a
time interval to recover from the
error-disable state.
See the switch command
reference guide for information
on the errdisable recovery
command.
Switch does not recognize the
SFP module
The SFP module might be installed
upside down.
The SFP module does not snap into
the slot.
Verify that the SFP module is
not installed upside down.
Remove the SFP module.
Inspect for physical damage to
the connector, the module, and
the module slot.
Replace the SFP module with a
known good SFP module.
Table 3-1 Common Problems and Their Solutions (continued)
Symptom Possible Cause Resolution
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