34
Installation GREYHOUND Switch
Release 01 04/2016
1.8.3
Media module status
GMM20/GMM30/GMM40
LED
Display
Color Activity
Meaning
Power
Supply
voltage
—
None
Media module is inoperative
Green Lights up Voltage supply to the media module is
on
L/D
Link state/
data traffic
—
None
Device detects an invalid or missing link
Green Lights up Device detects a valid link
Flashes
1 time a
period
Port is switched to stand-by
Flashes
3 times a
period
Port is switched off
Yellow Lights up Device detects a
non-
supported SFP
transceiver or a
non-
supported data
rate
Flashing Device is transmitting and/or receiving
data
Flashes
1 time a
period
Device detects at least one
unauthorized MAC address
(Port Security Violation)
Power
Power
Power
Power
L
L
L
L
D
D
D
D
D
D
Power
L
L
