Cisco Catalyst 3550

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Catalyst 3550 Multilayer Switch Hardware Installation Guide
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Chapter 1 Product Overview
Front-Panel Description
For more information about the Cisco RPS 300, refer to the Cisco RPS 300
Redundant Power System Hardware Installation Guide.
Port LEDs and Modes
Each 10/100/1000 port and GBIC module slot has a port LED. These port LEDs,
as a group or individually, display information about the switch and about the
individual ports. The port modes determine the type of information displayed
through the port LEDs. Table 1-4 lists the mode LEDs and their associated port
mode and meaning.
To select or change a mode, press the Mode button until the desired mode is
highlighted. When you change port modes, the meaning of the port LED colors
also change. Table 1-5 explains how to interpret the port LED colors in different
port modes.
Table 1-4 Port Mode LEDs
Mode LED Port Mode Description
STAT Port status The port status. This is the default mode.
UTL Switch utilization The current bandwidth in use by the switch.
DUPLX Port duplex mode The port duplex mode: full duplex or half duplex.
SPEED Port speed The port operating speed: 10, 100, or 1000 Mbps.