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3-3
Cisco Catalyst Blade Switch 3040 for FSC Hardware Installation Guide
OL-10694-01
Chapter 3 Troubleshooting
Diagnosing Problems
Table 3-1
Common Problems and Their Solutions
Symptom
Possible Cause
Resolution
Poor performance or excessive
errors
Duplex autonegotiation mismatch.
Refer to the blade switch
software configuration guide for
information on identifying
autonegotiation mismatches.
Cabling distance exceeded
•
Port statistics show excessive
frame check sequence (FCS),
late-collision, or alignment
errors.
•
For 10/100/1000BASE-T
connections:
–
The distance between the
port and the attached device
exceeds 328 feet (100
meters).
–
If the blade switch is
attached to a repeater, the
total distance between the
two end stations exceeds the
cabling guidelines.
•
For SFP port connections:
–
The distance between the
SFP module port and the
attached device exceeds the
SFP module cabling
guidelines.
•
Refer to the blade switch
software configuration
guide for information on
displaying port statistics.
•
Reduce the cable length to
within the recommended
distances.
•
Refer to your repeater
documentation for cabling
guidelines.
•
Refer to your SFP
documentation for cabling
guidelines.
Bad adapter in attached device
•
Excessive errors found in port
statistics.
•
STP checking for possible
loops.
•
Run adapter card diagnostic
utility.
•
Wait 30 seconds for the port
LED to turn green.