Cacti/OpenWRT

Cacti

/usr/share/cacti/resource/scripts/get_iwinfo.sh

#!/bin/bash

if [ ${#} -ne 3 ]; then
  echo "Usage: $0 <host> <community> <interface>"
  exit 0
fi

snmptable -c${2} -v1 ${1} .1.3.6.1.4.1.2021.8 | sed -n "s/.*iwinfo_${3}\ .*${3}\ *0\ *\(.*\)\ *noError/\1/p"

OpenWRT

• Make sure you have the packages bash, iwinfo and snmpd installed

/etc/config/snmpd

config exec
        option name     iwinfo_wlan0
        option prog     /etc/snmp/iwinfo.sh
        option args     wlan0

config exec
        option name     iwinfo_wlan1
        option prog     /etc/snmp/iwinfo.sh
        option args     wlan1

/etc/snmp/iwinfo.sh

#!/bin/bash

if [ ${#} -ne 1 ]; then
  echo "Usage: $0 <interface>"
  exit 0
fi

INFO=`iwinfo ${1} info`
CHANNEL=`echo "${INFO}" | sed -n 's/.*Channel:\ \(.*\)\ (.*)/\1/p'`
TXPOWER=`echo "${INFO}" | sed -n 's/.*Tx-Power:\ \(.*\)\ dBm.*/\1/p'`
SIGNAL=`echo "${INFO}" | sed -n 's/.*Signal:\ -\(.*\)\ dBm\ \ Noise.*/\1/p'`
NOISE=`echo "${INFO}" | sed -n 's/.*Noise:\ -\(.*\)\ dBm.*/\1/p'`
BITRATE=`echo "${INFO}" | sed -n 's/.*Bit\ Rate:\ \(.*\)\ MBit.*/\1/p'`

echo "channel:${CHANNEL} txpower:${TXPOWER} signal:${SIGNAL} noise:${NOISE} bitrate:${BITRATE}"
exit 0