Leds - ZyXEL Communications MGS-3712/MES-3728 User Manual

Chapter 3 Hardware Overview

3.3 LEDs

After you connect the power to the Switch, view the LEDs to ensure proper
functioning of the Switch and as an aid in troubleshooting.
Table 2 LED Descriptions
LED
BPS
PWR
SYS
ALM
Ethernet Ports
LNK/ACT Green
Mini-GBIC Slots
LNK
ACT
1000Base-T Ethernet Ports (in Dual Personality Interface)
LNK/ACT Green
42
COLOR STATUS DESCRIPTION
Green On The backup power supply is connected and active.
Blinking The system is receiving power from the backup power
supply.
Off The backup power supply is not ready or not active.
Green On The system is turned on.
Off The system is off.
Green On The system is on and functioning properly.
Blinking The system is rebooting and performing self-diagnostic
tests.
Off The power is off or the system is not ready/
malfunctioning.
Red On A hardware failure is detected, or an external alarm is
active.
Off The system is functioning normally.
Blinking The system is transmitting/receiving to/from a 10 Mbps
Ethernet network.
on The link to a 10 Mbps Ethernet network is up.
Amber Blinking The system is transmitting/receiving to/from a 100 Mbps
Ethernet network.
On The link to a 100 Mbps Ethernet network is up.
Off The link to an Ethernet network is down.
Green On The link to this port is up.
Off The link to this port is not connected.
Green Blinking This port is receiving or transmitting data.
Blinking The system is transmitting/receiving to/from a 10 Mbps
or a 1000 Mbps Ethernet network.
On The link to a 10 Mbps or a 1000 Mbps Ethernet network is
up.
Amber Blinking The system is transmitting/receiving to/from a 100 Mbps
Ethernet network.
On The link to a 100 Mbps Ethernet network is up.
Off The link to an Ethernet network is down.
MES-3728 User's Guide