User Manual

- 14 -
LED Indicators
The front panel of the Moxa EtherDevice Switch contains several LED
indicators. The function of each LED is described in the table below.
LED
Color
State
Description
PWR
(P)
Amber
On
Power is being supplied to power input
PWR.
Off
Power is not being supplied to power input
PWR.
10M/
100M
Green
On
When the port is active and links on 100
Mbps.
Blinking
When the port’s data is being transmitted
at 100 Mbps.
Off
When the port is inactive or link down.
Amber
On
When the port is active and links on 10
Mbps.
Blinking
When the port’s data is being transmitted
at 10 Mbps.
Off
When the port is inactive or link down.
Auto MDI/MDI-X Connection
The Auto MDI/MDI-X function allows users to connect the EDS’s
10/100BaseT(X) ports to any kind of Ethernet device, without paying
attention to the type of Ethernet cable being used for the connection.
This means that you can use either a straight-through cable or cross-
over cable to connect the EDS to Ethernet devices.
Dual Speed Functionality and Switching
The EDS’s 10/100 Mbps RJ45 switch port auto negotiates with the
connected device for the fastest data transmission rate supported by
both devices. The EDS is a plug-and-play device, so software
configuration is not required at installation or during maintenance.
The half/full duplex mode for the RJ45 switched ports is user dependent
and changes (by auto-negotiation) to full or half duplex, depending on
which transmission speed is supported by the attached device.
Switching, Filtering, and Forwarding
Each time a packet arrives at one of the switched ports, a decision is
made to either filter or forward the packet. Packets with source and
destination addresses belonging to the same port segment will be
filtered, constraining those packets to one port, and relieving the rest of
the network from the need to process them. A packet with a destination
address on another port segment will be forwarded to the appropriate
port, and will not be sent to the other ports where it is not needed.
Packets that are used in maintaining the operation of the network (such
as the occasional multi-cast packet) are forwarded to all ports. The EDS
operates in the store-and-forward switching mode, which eliminates
bad packets and enables peak performance to be achieved when there
is heavy traffic on the network.