Wireless LAN Array
Installing the Xirrus Array
35
Power Planning
This section discusses the AC and DC power options.
AC Power
The AC power option requires a direct connection between the Array and a
dedicated AC power outlet. The power cord is provided with the unit.
Remote Distributed DC Power
To deliver DC power to the Array, you must have the optional Xirrus Remote DC
Power System (XP-3100) and a Xirrus Array that supports DC power—see
Figure 4 on page 8
. The XP-3100 provides DC power to multiple Arrays from a
single source, and requires only one AC power outlet.
Depending on the type of cable used, Arrays can be located up to 1,000 feet from
the XP-3100. In addition, the XP-3100 can be plugged into a UPS to prevent power
failure to all Arrays in the network.
Security Planning
This section offers some useful guidelines for defining your preferred encryption
and authentication method. For additional information, go to the
Security
section
of
“Frequently Asked Questions” on page 222
.
Wireless Encryption
Encryption ensures that no user can decipher another user’s data transmitted
over the airwaves. There are three encryption options available to you, including:
z
WEP-40bit or WEP-128bit
Because WEP is vulnerable to cracks, we recommend that you only use
this for legacy devices that cannot support a stronger encryption type.
z
Wi-Fi Protected Access
This is much more secure than WEP and uses TKIP for encryption.
#
When using CAT5 cable, DC power can be provided up to a distance of 300
feet.
