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aredn: Update Help for passive Wifi Scan updates

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Joe Ayers 2019-08-25 11:39:12 -07:00 committed by Joe AE6XE
parent 3a4d92add2
commit f62e41aa99
1 changed files with 15 additions and 8 deletions
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@ -78,14 +78,21 @@ provided through those nodes.
provides which gives you detailed information about the current state of the
OLSR routing software.<br><br></li>
<li><strong>WiFi Scan</strong> displays a list of other 802.11 signals that the
node can see and only of the same bandwidth. The 802.11 signals include
Access Points (AP), neighbor nodes (connected ad-hoc stations), and other mesh networks
(foreign ad-hoc networks). The AREDN mesh is created on top of an 802.11 'ad-hoc' network.
Consequently when multiple ad-hoc networks are visible to each other (different SSID or
channel), the 'network' is displayed and not individual nodes (stations). There is also an
automatic scan mode. It is not recommend to run a wifi scan continuously because this will degrade mesh
performance. A wifi scan transmits queries on all channels to discover other devices.<br><br></li>
<li><strong>WiFi Scan</strong> Displays a list of other 802.11 signals that your
node can see. The 802.11 signals may include Access Points, neighbor nodes, and
other mesh networks (foreign ad-hoc networks). WiFi Scan only finds devices on
the same channel width as your node is configured to. When installing at a new
location, it is best practice to scan on 5, 10, and 20MHz channels to find all
802.11 signals in range. This information will help to pick a channel clear of
other interference. When multiple ad-hoc networks are visible (with different
SSIDs or channels), the ID of each 802.11 ad-hoc *network* is displayed but not
the individual nodes. There is also an automatic scan mode, but running a Wifi
Scan continuously is not recommended, particularly if the node is actively routing
traffic. The scan is passive, or only listens for other beacons through all channels,
and risks loss of data on the assigned channel. Wifi Scan does not transmit probes
on every channel in passive mode, thus no risk of interfering with Radar stations
on DFS channels, or other unintended transmissions. Multiple attempts of Wifi Scan
will be necessary to find all devices in range.
<li><strong>Setup</strong> takes you to the setup pages of the web
interface. You will need to supply a username and password to access those