Elpro Technologies 450U-E Wireless Ethernet Modem & Device Server User Manual
Rev Version 1.0.12-Beta7
www.cooperbussmann.com/wirelessresources
69
R
Route is used when joining two or more different networks together via the 450U-E. Refer to Section 1.1 for more details.
When routing from one subnet to another devices on one subnet need to know where to pass the message to get it to
the other subnet. This is done one of two ways;
Setting up a route within the device which is a lookup table showing a list of subnets and which IP address to use
as the Gateway.
Setting up a default Gateway address on the modem. This is a link to an IP address that knows how to get to the
required
where if it does not know where to send the message it will
sent it to the default Gateway.
If there are multiple networks each with a different IP range, routing rules must be used as you can only have one
Gateway Address.
In the example below a routing rule needs to be entered into
to will allow access between Network A and
Network B. The default Gateway address is not used as the Pc has other network adaptors This is can be entered at the
command prompt as instructed.
Route PRINT will show all active routes on PC,
Route ADD will add a routing table to network,
Route DELETE <
Destination Netmask Gateway Interface>
will delete the unwanted routing table
Route CHANGE modifies an existing route.
An example of a routing table is shown for the configuration below,
Network A
Access Point Bridge
Client Router
Network B
IP Address 192.168.0.17
IP Address 192.168.0.191
Ethernet IP 192.168.2.50
Ethernet IP 192.168.2.201
Netmask 255.255.255.0
Netmask 255.255.255.0
Netmask 255.255.255.0
Netmask 255.255.255.0
Gateway IP 192.168.0.50
Gateway IP 192.168.0.50
Wireless IP 192.168.0.50
Gateway IP 192.168.2.50
Netmask 255.255.255.0
Gateway IP 192.168.0.50
A routing rule must be set in the PC on Network A
This will allow communications from Network A to Network B.
To enter a Routing rule:
Open a DOS command window and enter the following.
Route ADD 192.168.2.0 MASK 255.255.255.0 192.168.0.50
This routing rule says that if you wish to access any IP address on network B (192.168.2.0) with the Netmask of
255.255.255.0 the message needs to be sent to 192.168.0.50.
Devices on Network B should also have their Default Gateway Address set to the Client Router Ethernet address
(192.168.2.50). This will ensure that any traffic for the 192.168.0.0 network can be returned.
Figure 78 - Route