Specifications

Hardware Reference 9
C613-03080-00 REV G
AT-8648T/2SP switch
Link and Mode LEDs
AT-8648T/2SP switch
10/100/1000Base-T
and SFP LEDs
AT-A45/xx Series
Expansion Module
LEDs
LED State Description
LINK OFF There is no link between the port and the end-
node.
Green A valid link has been established between the
port and the end-node.
Mode - COL OFF No data collisions are occurring on the port.
Flashing Green Data collisions are occurring on the port.
Mode - SPD OFF The port is operating at 10 Mbps.
Green The port is operating at 100 Mbps.
Mode - FDX OFF The port is operating in half-duplex mode.
Green The port is operating in full-duplex mode.
Mode - ACT Flashing Green There is activity on the port
OFF There is no activity on the port.
LED State Description
LINK OFF There is no link between the port and the end-
node.
Green A valid link has been established between the
port and the end-node.
Mode - COL OFF No data collisions are occurring on the port.
Flashing Green Data collisions are occurring on the port.
Mode - SPD OFF The port is operating at 10/100 Mbps.
Green The port is operating at 1000 Mbps.
Mode - FDX OFF The port is operating in half-duplex mode.
Green The port is operating in full-duplex mode.
Mode - ACT Flashing Green There is activity on the port
OFF There is no activity on the port.
LED State Description
LINK Steady green The port has established a valid link with the
end node.
Flashing green The port is transmitting and/or receiving data.
Duplex Steady green The port is operating in full duplex.
Steady amber The port is operating in half duplex.
Flashing amber Collisions are occurring on the port.