Chapter 4 Troubleshooting
Diagnosing Problems
4-6
Catalyst 2950 Desktop Switch Hardware Installation Guide
78-11157-05
STAT LED on
Catalyst 2950 LRE
6
switch
is not turned on.
Telephone cable is loose or is not
connected properly.
Reseat telephone cable into the
telephone wall jack and the
Cisco LRE CPE
7
.
Telephone cable is defective. Replace the telephone cable.
Cable trunking defective. Repair the cable trunking, or
select an alternative pair of
cables.
Cisco LRE CPE is not
communicating with
Catalyst 2950 LRE switch, or Cisco
LRE CPE might be attempting to
exceed the rate or the reach selected
by the switch.
• Reduce cable length to
within the recommended
distances. (See the “LRE
Port” section on page 2-12
for LRE cabling
guidelines.)
• Refer to the switch software
configuration guide for
information about verifying
LRE port link status.
Catalyst 2950 LRE switch does not
support the Cisco LRE CPE.
See the compatibility matrix,
Table 2-1 on page 2-4, for more
information.
1. FCS = frame check sequence
2. GBIC = Gigabit Interface Converter
3. SFP = small form-factor pluggable
4. STP = Spanning Tree Protocol
5. CWDM = Coarse Wave Division Multiplexer
6. LRE = Long-Reach Ethernet
7. CPE = customer premises equipment
Table 4-1 Common Problems and Solutions (continued)
Symptom Possible Cause Resolution
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