Bridge GUI Guide: Network Configuration
68
4
Click
APPLY
in the upper right of the screen (or
RESET
screen settings to cancel your changes).
Figure 3.8. Advanced View
RADIO 1 Radio Settings
frame, all radio-equipped platforms
3.3.3
DFS Operation and Channel Exclusion
NOTE:
The
Bridge’s regulato-
ry domain is deter-
mined by the specified
Country
of operation, de-
Most regulatory domains, including the Bridge’s default FCC
domain, require that certain channels in the 5 GHz 801.11a
frequency band operate as DFS (Dynamic Frequency
Selection) channels.
DFS is a radar (radio detection and ranging) avoidance
protocol. Devices transmitting on a DFS channel must detect
approaching radar on the channel, vacate the channel within
10 seconds of doing so, and stay off the channel for a minimum
of 30 minutes thereafter.
Radios using the 2.4 GHz 802.11g frequency band or the
4.4 GHz military band are not subject to DFS.
3.3.3.1
DFS Operation on the Bridge
NOTE:
Consult
your local regula-
tory authority for appli-
cable DFS channel
designations.
Bridge radios deployed in a mesh network must use a common
channel in order to remain connected. For radios on which a
Bridging
-enabled BSSs are configured (Section 3.3.4), the
actual
channel on which the network transmits and receives will
be subject to change according to the Bridge’s DFS
implementation.
In order to keep all network nodes connected, a network Bridge
forced by DFS to change the channel on a bridging radio will