Notes

#!/bin/bash


Hchoise()
{
echo "-usage chmod +x *.sh"
echo
echo "Run Via: ./*.sh Community IP Address"
echo "Community --> public for read only | private for read-write"
echo "IP Address --> x.x.x.x"
echo
echo "Example:"
echo "./*.sh public 127.0.0.1"
echo
}


while getopts ":h" option; do
case $option in
h) # show help window
Hchoise
exit;;
esac
done

#here we have 2 inputs from terminal so take it and print error if user forget to specify
Community=${1?Error: you should specify the Community type -h for help }
T_IP=${2?Error: you should specify the IP address type -h for help}


#now we will start with our script we will play with Interfaces,Phy address,IP address,Network Mask
echo "Interface No Physical Address IP Address Network Mask"
echo "------------- ---------------- ---------- ------------"

ifCounter=1
iniIP=$(snmpgetnext -v 2c -c public 127.0.0.1 1.3.6.1.2.1.4.20.1.1 | awk 'NR==1{print $4}')
while [ "$Interfaces" != "Such" ]
do

Interfaces=$(snmpget -v 2c -c $Community $T_IP 1.3.6.1.2.1.4.20.1.2.$iniIP | awk 'NR==1{print $4}')

#here we will check if interfaces finish
#On interfaces variable we are looking for word 4 of the output which will be Such if interfaces finish
if [ "$Interfaces" == "Such" ]
then
break
fi


Address=$(snmpget -v 2c -c $Community $T_IP 1.3.6.1.2.1.2.2.1.6.$Interfaces | awk 'NR==1{print $4,$5,$6,$7,$8,$9}')


IP=$(snmpgetnext -v 2c -c $Community $T_IP 1.3.6.1.2.1.4.20.1.1.$iniIP | awk 'NR==1{print $4}')

#here we will use variable tempIP1 to test if we have interface that doesn't has an IP address
#so we will just print her interface number and physical address
tempIP1=$(snmpgetnext -v 2c -c $Community $T_IP 1.3.6.1.2.1.4.20.1.1.$IP | awk 'NR==1{print $4}')
if [ "$tempIP1" == "1" ]
then
#now we will use tempaddress to get physical address of this interface
tempaddress=$(snmpget -v 2c -c $Community $T_IP 1.3.6.1.2.1.2.2.1.6.$ifCounter | awk 'NR==1{print $4,$5,$6,$7,$8,$9}')
echo "$ifCounter $tempaddress"
echo

fi

NetMask=$(snmpget -v 2c -c $Community $T_IP 1.3.6.1.2.1.4.20.1.3.$iniIP | awk 'NR==1{print $4}')



#here we will check if interface doesn't has a physical address so we will print :::: on the physical address spot and continue print normally
if [ "$iniIP" == "127.0.0.1" ]
then
echo "$Interfaces :::: $iniIP $NetMask"
else

echo "$Interfaces $Address $iniIP $NetMask "

fi
#update iniIP to next one
iniIP=$IP

echo
#increase the counter by 1
((ifCounter=ifCounter+1))

done