Cisco 2970 Hardware Installation Guide - Page 92

Symptom, Possible Cause, Resolution, Cabling distance exceeded., Bad adapter in attached device.

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Page 92 highlights

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. Refer to the Catalyst 2900 Series XL and Catalyst 3500 Series XL 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 100BASE-TX connections: • Refer to the Catalyst 2900 Series XL and Catalyst 3500 Series XL Software Configuration Guide for information on displaying port statistics. • The distance between the port and the attached device exceeds 328 feet (100 meters). • If the switch is attached to a repeater, the total distance between the two end stations exceeds the 100BASE-T cabling guidelines. • Reduce the cable length to within the recommended distances. Refer to your 100BASE-T repeater documentation for cabling guidelines. • For 10BASE-T connections: The distance between the port and the attached device exceeds 328 feet (100 meters). Bad adapter in attached device. • Excessive errors found in port statistics. • STP checking for possible loops. • Reduce the cable length to within the recommended distances. • Run adapter card diagnostic utility. • Wait 30 seconds for LED to turn green. Catalyst 2900 Series XL Hardware Installation Guide 3-4 78-6461-04

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Chapter 3
Troubleshooting
Diagnosing Problems
3-4
Catalyst 2900 Series XL Hardware Installation Guide
78-6461-04
Table 3-2
Common Problems and Their Solutions
Symptom
Possible Cause
Resolution
Poor Performance or
Excessive Errors.
Duplex autonegotiation mismatch.
Refer to the
Catalyst 2900 Series
XL and Catalyst 3500 Series XL
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 100BASE-TX connections:
•
The distance between the port and the
attached device exceeds 328 feet
(100 meters).
•
If the switch is attached to a repeater,
the total distance between the two
end stations exceeds the 100BASE-T
cabling guidelines.
•
For 10BASE-T connections: The
distance between the port and the
attached device exceeds 328 feet
(100 meters).
•
Refer to the
Catalyst 2900
Series XL and Catalyst 3500
Series XL Software
Configuration Guide
for
information on displaying
port statistics.
•
Reduce the cable length to
within the recommended
distances.
Refer to your 100BASE-T
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.