User's Manual

Chapter 9: Setup Mode: Channel Configuration
XPress DR+ User Guide 84
Adhoc Network Channel
When Adhoc is selected in the Topology parameter, and the XPress DR+W cannot find
the specified network, it creates one with that name by transmitting a beacon on the
selected channel.
Channel (11) ? _
Only channels allowed in the country for which the XPress DR+W is designated can be
selected. The country displays in the Setup Mode settings overview.
Security
The Security Suite prompt enables you to select the type of security. The XPress DR+W
features WEP, WPA and WPA2/802.11i to secure all wireless communication. WPA and
WPA2/802.11i are only available when the topology is Infrastructure.
Notes:
 In the WPA and WPA2 modes, the encryption setting denotes the lowest acceptable
encryption method, CCMP > TKIP > WEP. For example, if the unit is configured for
WEP, and the Access Point supports TKIP, the negotiation will result in TKIP being
used. If the unit is configured for TKIP, and the Access Point only supports WEP,
association will fail because the Access Point does not meet the unit's demands.
(CCMP is only available in WPA2 mode.)
 Communication between the Access Point and a single wireless device is called
unicast and uses the pairwise encryption method. Communication from the Access
Point to many wireless devices at once is called multicast and uses the group
encryption method.
To receive broadcast and multicast messages, the group encryption for all
wireless devices communicating with the same access point must be equal. If
any of these devices is WEP-only (no support for WPA), set the encryption to
TKIP+WEP.
A group encryption lower than the pairwise encryption is necessary to use higher
security with the XPress DR+W than other devices connecting to the same
Access Point can support.
 CCMP is also called AES on products of other manufacturers. CCMP is an
extension of AES and is the correct term. It provides the strongest current encryption
method.