Weidmuller WI-MOD-945-E: 900Mhz Wireless Ethernet & Device Server v2.16 User Manual
Page 59
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual
Page 59
www.weidmuller.com
Rev 2.136
Each Modem has a different SSID. This is done to limit broadcast traffic and to route data only were it needs to go.
Site B has two Virtual Client WDS links configured
– one to Site A’s Access Point, and one to Site C’s Access Point. The
screenshot below shows the WDS connections at Site B.
Figure 42 - Site B Configuration
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. It must be noted that
Encryption is not inherited from the main page. Therefore if the Encryption method/key are left blank the WDS link
will be open. This example shows the Encryption method and keys as being different however 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 AP and the Router IP is on the same subnet as the Access Point
In addition to adding these WDS Connections, Sites C & D will need a default gateway address configured so that the
modules can determine where to send traffic destined for the other networks. Also because Site A does not know how to
get to Network’s 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 below.
Figure 43 - 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 WI-MOD-945-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 section 3.17 -
Unit C & D require some sort of routing rule that will determine how it communicates to networks outside of its
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.
Figure 44 - Gateway Address