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)
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