Chapter 3 Hardware Overview
MES-2110 User’s Guide 35

3.2.3 Powering on the MES-2110

1Turn on the power supply first.
2Turn on the MES-2110’s power second.
3.3 LEDs
After you connect the power to the MES-2110, view the LEDs to ensure proper
functioning of the MES-2110 and as an aid in troubleshooting.

Table 2 LED Descriptions

LED COLOR STATU
SDESCRIPTION
PWR Green On The system is turned on.
Off The system is off.
SYS 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.
Ethernet Ports
LINK/
ACT Green 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.
Mini-GBIC Slots
LNK Green On The link to this port is up.
Off The link to this port is not connected.
ACT Green On The link to an Ethernet network is on.
Blinking This port is receiving or transmitting data.
Off The port is not receiving or transmitting data.
1000Base-T Ethernet Ports (in Dual Personality Interface)