Cisco Catalyst 2950 Hardware Installation Guide

4-5
Catalyst 2950 Desktop Switch Hardware Installation Guide
78-11157-05
Chapter 4 Troubleshooting
Diagnosing Problems
System LED is amber. • Internal fan fault detected. • Check if the fan has failed
by using the show env fan
privileged EXEC command.
If the fan has failed, call
Cisco Systems.
• Nonfatal or fatal POST error
detected.
• Use the show post
privileged EXEC command
to see which POST test
failed.
Switch placed in
error-disabled state after
CWDM
5
GBIC or SFP
module is inserted.
Bad or non-Cisco-approved CWDM
GBIC module or SFP module.
Remove the CWDM GBIC or
SFP module from the switch,
and replace it with a
Cisco-approved module. Use the
errdisable recovery cause
gbic-invalid global
configuration command to
verify port status, and enter a
time interval to recover from the
error-disabled state.
Refer to the switch software
configuration guide for
information about the
errdisable recovery command.
Table 4-1 Common Problems and Solutions (continued)
Symptom Possible Cause Resolution

Cisco Catalyst 2950 Specifications

General

Forwarding Bandwidth	8.8 Gbps
Switching Capacity	13.6 Gbps
Forwarding Rate	6.6 Mpps
Weight	3.6 kg
RAM	16 MB
Flash Memory	8 MB
Operating Humidity	10% to 85% non-condensing
Uplink Ports	2 x 10/100/1000Base-T
Dimensions	4.4 cm x 44.5 cm x 24.2 cm
Remote Management Protocol	SNMP, Telnet, HTTP
Features	Quality of Service (QoS), VLAN support
Compliant Standards	IEEE 802.3, IEEE 802.3u, IEEE 802.1D, IEEE 802.1Q, IEEE 802.1p
Status Indicators	system
Operating Temperature	0 to 45°C
Ports	24 x 10/100 Ethernet ports
MAC Address Table Size	8, 192 entries
Power Supply	Internal 100-240V AC, 50-60Hz