Installation guide

1-19
Catalyst 2950 Switch Hardware Installation Guide
OL-6156-01
Chapter 1 Overview
Front-Panel Description
For more information about GBIC LEDs, see your GBIC module documentation.
Figure 1-20 to Figure 1-24 show the bandwidth utilization percentages displayed by the right-most
LEDs.
Note The Catalyst 2950 LRE switch LEDs do not give utilization status.
If all LEDs on a Catalyst 2950-12, 2950-24, 2950C-24, 2950SX-24, or 2950T-24 switch are green (no
amber showing), the switch is using 50 percent or more of the total bandwidth. If the far-right LED is
off, the switch is using more than 25 but less than 50 percent of the total bandwidth, and so on. If only
the far-left LED is green, the switch is using less than 0.0488 percent of the total bandwidth. (See
Figure 1-20 and Figure 1-21.)
Figure 1-20 Bandwidth Utilization on Catalyst 2950-12 Switches
SPEED 10/100/1000 ports
12
Off Port is operating at 10 Mbps.
Green Port is operating at 100 Mbps.
Flashing green Port is operating at 1000 Mbps.
SFP modules
12
Off Port is operating at 10 Mbps
Green Port is operating at 100 Mbps
Flashing green Port is operating at 1000 Mbps
1. On an LRE switch, the LEDs for Uplink Port 1 and Uplink Port 2 correspond either to the SFP module port or to the
10/100/1000 port, depending on which is active.
2. If an LRE switch senses connections to both ports, by default, the switch chooses the fiber-optic connection over the copper
connection.
Table 1-7 Meaning of Port LED Colors in Different Modes for the LRE Switches (continued)
Port Mode Color Meaning
1x 2x 3x 4x 5x 6x 7x 8x 9x 10x 11x 12x
SYST RPS
DUPLX
MODE
SPEEDUTILSTAT
Catalyst 2950 SERIES
10Base-T / 100Base-TX
47267
6.25–12.4%+
12.5–24%+
0–0.0487%+
25–49%+
50%+