Allied Telesis AT-MCF2300 - Manual (Page 81)

AT-MCF2000 Media Converter Series Installation Guide
Section I: Features 81
LEDs
The L/A (Link/Activity) LEDs on the Stack ports are defined in this table.
Table 21. LEDs on the AT-MCF2000S Stacking Module
State Description
Off The port has not established a link with a Stack
port on another stacking module.
Steady green The port has established a link with a Stack port
on another stacking module.
Flashing green The Stack port is transmitting or receiving
management packets.