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This page explains the DFS (Dynamic Frequency Selection) function.
SX-ND-4350WAN Plus supports DFS (Dynamic Frequency Selection) of the IEEE 802.11h wireless standard. When radar signals are detected, the channel will automatically be switched to avoid interference with radar systems (e.g. weather radar, etc).
One alternative channel can individually be set for W53/W56 channels beforehand, which will be used when radar signals are detected and the channel needs to be switched. When alternative channels are not specified or radar signals are detected even for that channel, SX-ND-4350WAN Plus switches the channel in order of the following:
DFS Channels (5GHz band)
Band | Channel bandwidth | Order of channel transition | |
W53 | HT20 | 52 > 56 > 60 > 64 > 36 | |
HT40 |
+ |
52 > 60 > 36 | |
- |
56 > 64 > 40 | ||
W56 |
HT20 |
100 > 104 > 108 > 112 > 116 > 120 > 124 > 128 > 132 > 136 > 140 > 100 | |
HT40 |
+ |
100 > 108 > 116 > 124 > 132 > 100 | |
- |
104 > 112 > 120 > 128 > 136 > 104 |
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