Honeywell XYR 400E User Manual page 36

Wireless ethernet modem
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inherited from the default interface. Note that when WPA is required with a mesh network, the same
SSID must be used for each Access Point. Alternatively the list of possible allowed Access Points
(by SSID) and their corresponding passphrases must be specified - since WPA Pre-Shared Keys are
derived from both passphrase and SSID. WEP encryption can only be used for a WDS link when
WEP has also been enabled for the default wireless interface, the default WEP key will also be
inherited.
One of the most common uses for WDS is to extend the range of the wireless network using
repeaters. The diagram below illustrates a simple example where the three Access Points are all at
fixed locations (each of the Access Points could, of course, have one or more client/stations
connected). Since the locations are fixed, we can avoid the overhead of using the Bridge Spanning
Tree protocol here by configuring fixed WDS links to ensure that each Access Point will only
connect to the next Access Point in the chain. Any number of additional intermediate repeaters
could be added to the chain in a similar way.
Access Point
Access Point
Access Point
192.168.0.10
192.168.0.20
192.168.0.30
WDS Bridge
WDS Bridge
No Encryption
WPA-AES Encryption
A
B
C
The WDS configuration for unit B is shown above (this page is accessible via the Repeaters link
from the configuration web pages). WDS mode has been enabled, and "Only connect to APs in list"
has been selected so that the repeater path is fixed. Since this example is a bridged network (i.e. all
devices on the same IP network) and there is no possibility of loops (i.e. multiple paths to the same
location) we do not need to incur the overhead of enabling bridge spanning tree protocol. It can be
seen that there are 2 entries in the WDS connections list for unit B. We specify the Access Points at
the other end of the WDS links by SSID only – though MAC addresses could also have been
Version 1
XYR400E Ethernet Modem
36
5/1/08

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