WJ's Notes: Memantau penggunaan bandwidth Indihome dengan perangkat ZTE F660

Sehubungan perangkat ZTE F660 tidak dapat dipantau menggunakan SNMP seperti perangkat sebelumnya (ZTE-ZXV10W300), maka saya mencoba memataunya menggunakan bash script.
Hasilnya saya tampilkan menggunakan Cacti.
Berikut ini data Cacti yang saya gunakan :

Cacti Version : 0.8.8a
Cacti OS : unix (Linux version 2.6.18-164.el5)
SNMP Version : NET-SNMP version: 5.3.2.2
RRDTool Version : RRDTool 1.4.x

Urutan pembuatannya sbb :

1. Tempatkan script di bawah pada folder '<path_cacti>/scripts/wjspeed.sh'
Pastikan ownernya dan attribut file tsb dapat dieksekusi (chmod 555/755)

#!/bin/bash
#
export WJ_FILETMP=/tmp/wjspeed.tmp
export WJ_FILELOG=/tmp/wjspeed.log

export WJ_TARGET=192.168.1.1
export WJ_USER=root
export WJ_PASS=Zte521
export WJ_INTR=ppp0

echo -n "`date`" > $WJ_FILETMP
# Start the expect script
(expect -c "
set timeout 10
# Start the session with the input variable and the rest of the hostname
spawn telnet $WJ_TARGET
expect \"*ogin:\"
send   \"$WJ_USER\r\"
expect \"*assword:\"
send   \"$WJ_PASS\r\"
expect \"*#\"
send   \"ifconfig $WJ_INTR | grep bytes\r\"
expect \"*#\"
send   \"exit\r\"
#
# stop the expect script once the telnet session is closed
exit
") | grep RX | sed -e 's/^       //g' | sed -e 's/:/=/g' >> $WJ_FILETMP

if [ "`grep RX $WJ_FILETMP`" ]
then
   head -1 $WJ_FILELOG >> $WJ_FILETMP
   cat     $WJ_FILETMP > $WJ_FILELOG
fi
#echo "   RX bytes=0 (0 MiB) TX bytes=0 (0 MiB)" >> $WJ_FILETMP

if [ "`wc -l $WJ_FILELOG | cut -d' ' -f1`" = "2" ]
then
   R2=`head -1 $WJ_FILELOG | cut -d'=' -f2 | awk '{print $1}'`
   T2=`head -1 $WJ_FILELOG | cut -d'=' -f3 | awk '{print $1}'`

   R1=`tail -1 $WJ_FILELOG | cut -d'=' -f2 | awk '{print $1}'`
   T1=`tail -1 $WJ_FILELOG | cut -d'=' -f3 | awk '{print $1}'`

   TBPS=`expr $T2 - $T1` ; TBPS=`expr $TBPS / 300`
   RBPS=`expr $R2 - $R1` ; RBPS=`expr $RBPS / 300`

   #After restart R2&T2 will be 0, R1&T1 will still using old counter
   [ "$TBPS" -ge "1250000" ] && TBPS=0
   [ "$RBPS" -ge "1250000" ] && RBPS=0

   echo "tx:$TBPS rx:$RBPS"
else
   echo "tx:0 rx:0"
fi

2. Buat 'Data Input Methods'