Allied Telesis AT-MCF2012LC/1 - Manual (Page 26)

Chapter 1: Overview
26
Link LEDs and the Smart MissingLink Mode
The Smart MissingLink mode pulses the transmitter on a
port when its companion port in a channel loses or has not
established a link to its networking device. The blinking Link
LED can make it easier for you to identify and troubleshoot
a link problem on the two ports of a channel. For more
information on this operating mode, refer to “Smart
MissingLink Mode” on page 33.
Table 5 lists the combinations and definitions of the Link
LEDs for the twisted pair port and fiber optic port of a
channel operating in this mode.
Table 4. “L” Link LEDs in the MissingLink Mode
Channel Port
Link LED
State
Description
Twisted Pair Port Off One or both ports in the channel can
not establish a link with a networking
device.
Fiber Optic Port Off
Twisted Pair Port Steady
Green or
Amber Both ports in the channel have
established a link with a networking
device. The twisted pair port is
operating at 100 Mbps (green) or 10
Mbps (amber) link and the fiber optic
port at 100 Mbps.
Fiber Optic Port Steady
Green
Table 5. “L” Link LEDs in the Smart MissingLink Mode
Channel Port
Link LED
State
Description
Twisted Pair Port Off Neither port in the channel has
established a link with a networking
device.
Fiber Optic Port Off
Twisted Pair Port Steady
Green or
Amber Both ports in the channel have
established a link with a networking
device. The twisted pair port is
operating at 100 Mbps (green) or 10
Mbps (amber) link and the fiber optic
port at 100 Mbps.
Fiber Optic Port Steady
Green