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Unpacking and Installing Your ELS100-16TX
2-3
Table 2-1. Meaning of ELS100-16TX LEDs
LED State Meaning
Port Status Mode
TX
RX
ACT
COL
FDX
100
MON
USR
On
On
On
On
On
Off
On
Off
On
Blink
On
Indicates port is transmitting a packet.
Indicates port is receiving a packet.
Indicates port is transmitting or
receiving.
Indicates a collision on a port.
Port is operating in Full Duplex.
Port is operating in Half Duplex.
Port operating at 100 Mbps.
Port operating at 10 Mbps.
Indicates the monitor port.
Indicates the port(s) being monitored.
Indicates that errored packets were
received.
Link (Individual
Ports)
On
Off
Indicates the link is good.
Indicates there is no link.
Status (Individual
Ports)
On/
Blink
Indicates you are monitoring the port for
a selected segment status condition. This
LED always indicates the selected status
mode.
CPU On
Off
Indicates the ELS100-16TX is operational.
Blinking – Indicates the ELS100-16TX is
running power-up diagnostics.
Indicates the ELS100-16TX is non-
operational.
Pwr On
Off
On – Indicates the ELS100-16TX is
receiving power and the voltage is within
the acceptable range.
Indicates the ELS100-16TX is not
receiving power.