3-4
Cisco Catalyst Blade Switch 3040 for FSC Hardware Installation Guide
OL-10694-01
Chapter 3 Troubleshooting
Diagnosing Problems
No connectivity
Incorrect or bad cable
These are results of no link at both
ends:
•
A crossover cable was used
when a straight-through was
required, or vice-versa.
•
The cable is wired incorrectly.
•
A crossover or straight-through
cable is wired incorrectly.
•
STP checking for possible
loops.
•
For the correct pinouts and
the proper application of
crossover or
straight-through cables, see
the
“Two Twisted-Pair
Cable Pinouts” section on
page B-3
.
•
Replace with a tested good
cable.
•
For 1000BASE-T
connections, be sure to use
a twisted four-pair,
Category 5 cable.
•
Wait 30 seconds for the port
LED to turn green.
Unreadable characters on the
management console
Incorrect baud rate.
Reset the emulation software to
9600 baud.
Amber system LED
Fatal POST error detected.
Contact Cisco Systems.
The blade 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 blade 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-disabled state.
Refer to the blade 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
