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4.4 Direct Connection between the DXM and a Computer
A direct Ethernet connection between the XRB011 and the computer requires an
RJ45 crossover cable. T
he end connectors will look identical to a “normal” RJ45
connector but the colors of some of the wires in the connectors will be
“reversed”. Hold up the two ends of the RJ45 cable and look at the color of the
wires from left to right. They should differ on the two connectors.
When direct connecting the XRB011 to a computer using a crossover cable over
Ethernet they are essentially participating in a private network. As such you need
to pick two valid IP addresses, one for each device.
The table below illustrates that not all IP addresses are actually valid IP
addresses. For example, IP addresses beginning with 127 are not valid.
4.5 Configuring the Computer for Direct Ethernet Connection
As mentioned above both the IP Address and Subnet Mask need to be
configured. In our environment computers normally are assigned IP addresses
dynamically, using DHCP. We need to change this and assign the IP Address
statically to the one we have selected.
Here are the steps on Windows XP. On the desktop right click on “My Network
Places” and select properties at the bottom of the menu.
Figure 16
– Right Click on Desktop
Class
Address Range
A
1.0.0.0-126.255.255.255
B
128.0.0.0-191.255.255.255
C
192.0.0.0-223.255.255.255
