Cisco Catalyst 3550

1-9
Catalyst 3550 Multilayer Switch Hardware Installation Guide
78-11358-01
Chapter 1 Product Overview
Rear-Panel Description
Figure 1-4 shows the bandwidth utilization percentages displayed by the
right-most LEDs.
Figure 1-4 Bandwidth Utilization for the Catalyst 3550 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 provide an indication of peak total bandwidth of the switch
over the last 24 hours.
Rear-Panel Description
Switch rear panels have an AC power connector, an RPS connector, and an RJ-45
console port, which are described in this section. (See Figure 1-5.)
Figure 1-5 Catalyst 3550 Rear Panel
50375
2
S
P
E
E
D
S
Y
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T
E
M
R
P
S
S
T
A
T
U
S
M
O
D
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T
I
L
D
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P
L
X
1
< 25% +
50% +
25% – 49% +
Catalyst 3550
1
2
345
67
8910
100-240V~
5-3A
50/60Hz
DC OUTPUT 1
C
O
N
S
O
L
E
50374
AC power
connector
Redundant
power
system
connector
Fan
exhaust
RJ-45
console
port