1-19
Catalyst 3550 Multilayer Switch Hardware Installation Guide
78-11358-03
Chapter 1 Product Overview
Front-Panel Description
Bandwidth Utilization
The UTIL mode on the switch shows the current bandwidth in use by the switch.
If all possible port LEDs are green, bandwidth utilization is in the 50 to 100%
range. Every port LED that is off (black) divides this range by two. For specific
switches, see Figure 1-12 through Figure 1-16.
shows the bandwidth utilization percentages displayed by the LEDs
on the Catalyst 3550-12T switch. If all port LEDs on the switch are green, the
switch is using 50 percent or more of its total bandwidth. If port LEDs 1 through
11 are green, the switch is using between 25 and 50 percent of its total bandwidth.
If port LEDs 1 through 10 are green, the switch is using 12.5 to 25 percent of its
total bandwidth capacity, and so on. Amber LEDs indicate peak utilization of the
switch over the last 24 hours.
Figure 1-12 Bandwidth Utilization for the Catalyst 3550-12T Switch
shows the bandwidth utilization percentages displayed by the LEDs
on the Catalyst 3550-12G switch. If all port LEDs on the switch are green, the
switch is using 50 percent or more of its total bandwidth. If port LEDs 1 through
11 are green, the switch is using between 25 and 50 percent of its total bandwidth.
If port LEDs 1 through 10 are green, the switch is using 12.5 to 25 percent of its
total bandwidth capacity, and so on. Amber LEDs indicate peak utilization of the
switch over the last 24 hours.
74026
2
SPEED
SYSTEM
RPS
STATUS
MODE
UTIL
DUPLX
1
< 25% +
50% +
25% – 49% +
Catalyst 3550
SERIES
1
2
3
4
5
6
7
8
9
10