Users Guide

Table Of Contents
162 Hardware Overview
Port and System LEDs
The front panel contains light emitting diodes (LEDs) that indicate the
status of port links, power supplies, fans, stacking, and the overall system
status.
LED of Management Unit in Stack and Stack Number Display
When a switch within a stack is the primary unit, the LED of the
management unit in the stack is solid green. If the LED of the management
unit in the stack is off, the stack member is not the primary unit. The Stack
No. panel displays the unit number for the stack member. If a switch is not
part of a stack (in other words, it is a stack of one switch), the LED of the
management unit in the stack is illuminated and the unit number is
displayed.