Cisco Catalyst 2900 Series XL Hardware Installation Guide

Chapter 3 Troubleshooting
Diagnosing Problems
3-6
Catalyst 2900 Series XL Hardware Installation Guide
78-6461-03
LRE status LED not turned
on.
RJ-21 cable loose or not connected
properly.
Reseat RJ-21 connector and fasten
with screw or cable tie.
Trunk cable defective. Verify trunk cable, repair or use
alternate pair.
CPE device absent, not powered, or
defective.
Check CPE device, and refer to
installation guide.
CPE device out of maximum range. Consider modification to
topology to shorten reach or
improve wiring quality.
LRE status LED stays
amber.
Trunk quality too poor to support desired
profile.
• Select a lower profile. For
more information, refer to the
Catalyst 2900 Series XL and
Catalyst 3500 Series XL
Software Configuration
Guide.
• Assess possibility of
improving trunk quality.
Excessive interference from other
services in bundle.
• Consider use of appropriate
public profile in bundles
shared with other services.
• Restrict the use of spectrally
incompatible services.other
services.
Local nonstandard noise source. Consult Cisco sales representative
for installation optimization.
LRE link goes down when
phone is taken off-hook,
placed on-hook, rings, or
dials.
Unfiltered phone tap on LRE line. • Plug phone into PHONE
socket on CPE device.
• Insert microfilter between
phone and LRE line. For
more information about
microfilters, contact your
Cisco sales representative.
Table 3-2 Common Problems and Their Solutions (continued)
Symptom Possible Cause Resolution

Cisco Catalyst 2900 Series XL Specifications

General

Brand	Cisco
Model	Catalyst 2900 Series XL
Category	Switch
Language	English