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245U-E Wireless Ethernet Modem User Manual
Rev Version 2.24
Figure 60 Site B WDS Connections
• The first entry configures a virtual WDS client connection from Site B to the access point at Site A.
The SSID is the same as Site A and the router IP address is 192.168.0.3, which is on the same subnet.
Encryption is not inherited from the main page. Therefore, if the encryption method and keys are
left blank the WDS link will be open. This example shows the encryption method and keys as being
different, but they can be the same or take on the same method and key as the main wireless
interface.
• The second entry configures another virtual WDS client connection, but this time to the access point
of Site C. Again, the SSID is the same as the access point and the router IP is on the same subnet as the
access point.
In addition to adding these WDS connections, Sites C and D will need a default gateway address configured
so that the module can determine where to send traffic destined for the other networks. In addition,
because Site A does not know how to get to networks 192.168.5.0 and 192.168.6.0, it requires rules to
confirm the routing paths. A default gateway and one routing rule could be configured, but it is easier to
configure two routing rules as shown in the example in Figure 61.
Figure 61
Site A Routing Rules
• The first routing rule specifies 192.168.5.0 as the destination with a netmask of 255.255.255.0,
(network address range of Site B). Because the last byte of the destination IP is zero, this refers to the
network (192.168.5.1 – 192.168.5.254), as opposed to an individual host IP. The same rule specifies
the address 192.168.0.3 as the gateway address. The routing rule effectively tells the 245U-E that
any traffic destined for the network 192.168.5.X should be forwarded to Site B via WDS link address
192.168.0.3.
• The second routing rule is similar except the destinations IP address range is 192.168.6.0 with a
Netmask of 255.255.255.0, indicating all traffic for the 192.168.6.X network will be routed through the
WDS link address 192.168.0.4. This is the WDS router IP address that Site C has been configured with
for its WDS link to Site A.
For more information on routing rules, refer to the “3.18 Routing.”
Unit C and D require some sort of routing rule that will determine how they communicate to networks
outside of their configuration. Similar routing rules as shown above could be configured to direct traffic
to these other networks. However, if only one routing path is required a default gateway address can be
configured on the Network page.
