46
Installation GREYHOUND Switch
Release 07 10/2020
1.8.3
Media module status
GMM20/GMM30/GMM40
Figure 12: Media module status: location of the display elements on the module
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
Summary of Contents for Hirschmann GREYHOUND GMM20
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