Cisco Catalyst 2950 Hardware Installation Guide

Chapter 4 Troubleshooting
Understanding POST Results
4-2
Catalyst 2950 Desktop Switch Hardware Installation Guide
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Understanding POST Results
While the switch powers on, it automatically begins POST, a series of tests that
verifies that the switch functions properly. When the switch begins POST, the
system LED is off. If POST completes successfully, the LED turns green. If POST
fails, the LED turns amber.
Note POST failures are usually fatal. Call Cisco Systems if your switch does not pass
POST.
Diagnosing Problems
Common switch problems fall into these categories:
• Poor performance
• No connectivity
• Corrupted software

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