Unit Led; Leds - 3Com 3CR17251-91 - Switch 5500G-EI Stackable Gigabit Ethernet Getting Started Manual

20 C 1: I
HAPTER NTRODUCING THE

Unit LED

LEDs

S S 4 S
UPER TACK WITCH
The Unit LED is a seven segment display visible on the front of the Switch.
The Unit LED can be used to diagnose hardware faults, display POST test
ID, display Stack ID, display PoE utilization and software upgrade
information. For information on using the Unit LED for problem solving,
see "Solving Problems Indicated by LEDs"
Table 5 lists LEDs visible on the front of the Switch, and how to read their
status according to color. For information on using the LEDs for problem
solving, see "Checking for Correct Operation of LEDs"
Table 5 LED behavior
LED Color
10/100/1000BASE-TX Port LEDs
Speed Green
Yellow
Yellow flashing
Off
Duplex Green
Yellow
Yellow flashing
Off
PoE Green
Green flashing
Yellow
Yellow flashing
Off
10/100BASE-T/TX Ports LEDS
Speed Green
Yellow
Yellow flashing
Off
5500 F
AMILY
on
Indicates
A high speed (1000 Mbps) link is present, blinking off
for every packet received or transmitted.
A low speed (10/100 Mbps) link is present, blinking
off for every packet received or transmitted.
The port has failed POST.
No link is present.
Full duplex, blinking off for every packet received or
transmitted.
Half duplex, blinking off for every packet received or
transmitted.
The port has failed POST.
No link is present.
Power is being delivered to the port.
Port power has exceeded limit or is unable to supply
power due to unit being over budget.
PoE error, no power supplied on port.
The port has failed post.
No power is being delivered.
A high speed (100 Mbps) link is present, blinking off
for every packet received or transmitted.
A low speed (10 Mbps) link is present, blinking off for
every packet received or transmitted.
The port has failed POST.
No link is present.
page 78.
on page 40.