3Com 4200G Getting Started Manual page 18

18 C 1: I
HAPTER NTRODUCING THE
Table 3 Status Display (continued)
Display
Flashing "F"
Flashing "t"
"C"
"c"
"S"
"1"
LEDs
S 4200G F
WITCH
Mode LED Color
Mode LED steady red
Mode LED flashing red
Mode LED green or yellow
Mode LED green or yellow
Mode LED green or yellow
Mode LED green or yellow
Table 4 lists the LEDs that are visible on the front of the switch and how
to read their status. For information on using the LEDs for problem
solving, see "Solving Problems Indicated by LEDs" on page 58.
Table 4 LED Behavior
LED Color
PWR LED
Green
Green flashing
Yellow flashing
Red
Off
Mode LED
Speed Green
Duplex Yellow
10/100/1000BASE-T Port LEDs
Speed Green
Yellow
Yellow Flashing
Off
AMILY
Description
Fan failure detected.
The switch is too hot; temperature is critical.
The switch is a clustered commander unit.
The switch is a clustered candidate unit.
The switch is a clustered slave unit.
The switch is not clustered.
Indicates
The Switch is powered-up and operating normally.
The self test (POST) or software download is in progress.
One or more ports have failed POST.
The switch has failed its power on self test.
The switch is not receiving power or there is a fault with the
power supply unit.
10/100 port speed and activity, Gigabit SFP status and
activity, or stack status and activity.
10/100 duplex and activity, Gigabit SFP duplex and
activity, or stack activity.
A high speed (1000 Mbps) link is present, blinking off for
every packet received or transmitted.
A low speed link is present, blinking off for every packet
received or transmitted.
The port has failed POST.
No link is present.