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# Access Point Plugin (ap)
The `ap` collector visualizes data related to access points.
## Example Netdata charts
## How it works
It does the following:
1. Runs `iw dev` searching for interfaces that have `type AP`.
From the same output it collects the SSIDs each AP supports by looking for lines `ssid NAME`.
Example:
```sh
# iw dev
phy#0
Interface wlan0
ifindex 3
wdev 0x1
addr 7c:dd:90:77:34:2a
ssid TSAOUSIS
type AP
channel 7 (2442 MHz), width: 20 MHz, center1: 2442 MHz
```
2. For each interface found, it runs `iw INTERFACE station dump`.
From the output is collects:
- rx/tx bytes
- rx/tx packets
- tx retries
- tx failed
- signal strength
- rx/tx bitrate
- expected throughput
Example:
```sh
# iw wlan0 station dump
Station 40:b8:37:5a:ed:5e (on wlan0)
inactive time: 910 ms
rx bytes: 15588897
rx packets: 127772
tx bytes: 52257763
tx packets: 95802
tx retries: 2162
tx failed: 28
signal: -43 dBm
signal avg: -43 dBm
tx bitrate: 65.0 MBit/s MCS 7
rx bitrate: 1.0 MBit/s
expected throughput: 32.125Mbps
authorized: yes
authenticated: yes
preamble: long
WMM/WME: yes
MFP: no
TDLS peer: no
```
3. For each interface found, it creates 6 charts:
- Number of Connected clients
- Bandwidth for all clients
- Packets for all clients
- Transmit Issues for all clients
- Average Signal among all clients
- Average Bitrate (including average expected throughput) among all clients
## Configuration
You can only set `ap_update_every=NUMBER` to `/etc/netdata/charts.d/ap.conf`, to give the data collection frequency.
To edit this file on your system run `/etc/netdata/edit-config charts.d/ap.conf`.
## Auto-detection
The plugin is able to auto-detect if you are running access points on your linux box.
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