Cisco WS-C3560-8PC-S Installation Guide - Page 94

Symptom, Possible Cause, Resolution, Table 3-2, Common Problems and Their Solutions

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Diagnosing Problems Chapter 3 Troubleshooting Table 3-2 Common Problems and Their Solutions Symptom Poor performance or excessive errors. Possible Cause Resolution Duplex autonegotiation mismatch. See the Cisco IOS Desktop Switching 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. • See the Cisco IOS Desktop Switching Software Configuration Guide for information on displaying port statistics. • For 100BaseTX connections: - The distance between the port and the attached device exceeds 100 meters. - If the switch is attached to a repeater, the total distance between the two end stations exceeds the 100BaseT cabling guidelines. • Reduce the cable length to within the recommended distances. See your 100BaseT repeater documentation for cabling guidelines. • For 10BaseT connections: The distance between the port and the attached device exceeds 100 meters. • Reduce the cable length to within the recommended distances. Bad adapter in attached device. • Excessive errors found in port statistics. • Run adapter card diagnostic utility. • STP checking for possible loops. • Wait 30 seconds for LED to turn green. Catalyst 3500 Series XL Hardware Installation Guide 3-4 78-6456-04

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Chapter 3
Troubleshooting
Diagnosing Problems
3-4
Catalyst 3500 Series XL Hardware Installation Guide
78-6456-04
Table 3-2
Common Problems and Their Solutions
Symptom
Possible Cause
Resolution
Poor performance or excessive
errors.
Duplex autonegotiation mismatch.
See the
Cisco IOS Desktop
Switching 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 100BaseTX connections:
–
The distance between the
port and the attached device
exceeds 100 meters.
–
If the switch is attached to a
repeater, the total distance
between the two end
stations exceeds the
100BaseT cabling
guidelines.
•
For 10BaseT connections: The
distance between the port and
the attached device exceeds 100
meters.
•
See the
Cisco IOS Desktop
Switching Software
Configuration Guide
for
information on displaying
port statistics.
•
Reduce the cable length to
within the recommended
distances.
See your 100BaseT repeater
documentation for cabling
guidelines.
•
Reduce the cable length to
within the recommended
distances.
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 LED to
turn green.