MCM-Inst-1.10
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3.8.2 RJ45 Jack LED Indications
There are two LEDs on the RJ45 jack. They are used to indicate the connection speed and activity. In
addition to these, the COMM LED shows Modbus traffic (see
).
Left LED (Link)
●
Off = No link
●
Amber = 10 Mbit
●
Green = 100 Mbit
Right LED (Activity)
●
Off = No link
●
Amber = half-duplex
●
Green = full-duplex
3.8.3 IP Address Configuration - DHCP
There are two methods of assigning the IP address to the MCM-MBT: DHCP and static IP. This section
describes the DHCP options, while
describes assigning a static IP.
We recommend using the MCM-MBT default DHCP configuration combined with a DHCP reserva-
tion on your DHCP server. A DHCP reservation tells the DHCP server to always assign the same IP
address to a particular device, based on its MAC address. With this approach, the MCM-MBT will
always have a known IP address. For this approach, you need the MAC address of the MCM-MBT,
which is printed on the top label of the XPort like 00-80-A3-D4-50-CA (note, all XPort MAC addresses
start with 00-80-83). The same MAC address (without the hyphens) is encoded in the Code 128
barcode on the label.
Figure 11: Lantronix XPort MAC Address Label
Once you know the MAC address, you can program that into your DHCP server. For larger organiza-
tions, contact your IT department for this step. For more information, search the internet for “DHCP
reservation”. A similar approach is to let your DHCP server assign an IP address to the MCM-MBT,
then find the assignment and convert it to a DHCP reservation so that it does not change in the future.
Note: If you do not use a DHCP reservation or a static IP address, the DHCP server may not
continue to reassign the same address over time.
If you are not using DHCP, see
below for information on assigning a
static IP address.
3.8.4 Lantronix DeviceInstaller Utility
The Lantronix DeviceInstaller utility for Windows finds all Lantronix devices on a LAN (local area
network), allows some basic query features, and includes a telnet client for advanced configuration.
It is not necessary to use DeviceInstaller, but may be helpful if your MCM-MBT was automatically
assigned an IP address, and you cannot determine the address, or if you need to perform advanced
configuration.