Allied Telesis AT-FS717FC/SC - Manual (Page 16)

Chapter 1: Product Description
16
Cabling
There are two basic types of fiber optic cabling used in the Ethernet
networks: multi-mode fiber and single-mode fiber. Multimode fiber is for
short distances, typically no more than 2 kilometers (1.2 miles). Single-
mode is for longer distances. The fiber optic port on the AT-FS717FC/SC
switch has a maximum distance of 1 kilometers (1.2 miles), and is
designed to be used with either 54/125 or 60/125 micron multi-mode
cable.
LEDs
The system and port LEDs on the front panel of the AT-FS717FC/SC
switch display status information. Each port has two LEDs.
Table 1 describes the system and port LEDs on the AT-FS717FC/SC Fast
Ethernet switch.
Table 1. System and Port LEDs
LED State Description
POWER
Green The switch is powered ON and
operating normally.
OFF The switch is not receiving power.
10/100TX
Twisted
Pair Port
100M Green The twisted pair port is operating at
a speed of 100 Mbps.
OFF The twisted pair port is operating at
a speed of 10 Mbps.
LINK/
ACT Green A valid link is established on the
twisted pair port.
Blinking
Green The twisted pair port is receiving/
transmitting data.
OFF No link is established on the twisted
pair port.
100FX
Fiber
Optic Port
LINK/
ACT Green A valid link is established on the
fiber optic port.
Blinking
Green The fiber optic port is receiving/
transmitting data.
OFF No link is established on the fiber
optic port.
FD Green The fiber optic port is operating in
full-duplex mode.
OFF The fiber optic port is operating in
half-duplex mode.