Allied Telesis AT-PC2002/POE - Manual (Page 30)

Chapter 1: Overview
30
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
network 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 22.
Table 9 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 8. “L” Link LEDs in the MissingLink Mode
Channel Ports
Link LED
States
Description
Twisted Pair
Port Off One or both of the ports can not
establish a link with a network
device.
Fiber Optic Port Off
Twisted Pair
Port Steady Green Both of the ports have established
links with their network devices.
Fiber Optic Port Steady Green
Table 9. “L” Link LEDs in the Smart MissingLink Mode
Channel Ports
Link LED
States
Description
Twisted Pair
Port Off Neither port in the channel has
established a link with a network
device.
Fiber Optic Port Off
Twisted Pair
Port Steady Green Both ports have established links
to their network devices.
Fiber Optic Port Steady Green
Twisted Pair
Port Flashing Green The twisted pair port can establish
a link to its network device, but the
fiber optic port is unable to
establish a link to its remote
device.
Fiber Optic Port Off
Twisted Pair
Port Off The fiber optic port of a channel
can establish a link with its network
device, but the twisted pair port is
unable to establish a link with its
local device.
Fiber Optic Port Flashing Green