MacAddressLookupFunctions.sh

# Made for bash, assumes you have a working rancid/clogin set up
# 

# Point the below to your local copy of the list
OUIList=~/oui.txt

if [ ! -c $OUIList ]
        then ## Check if $OUIList exists, if not, download and save it
        # touch $OUIList
        echo "Fetching the OUI list. This might take a little while. Like, 2 minutes."
        curl http://standards-oui.ieee.org/oui.txt > "$OUIList"
        ls -larthG $OUIList "$OUIList"
fi

function routerARP() {
        # invoke with IP as argument
        if [ -z "$1" ]
        then   ## Check for args, and if none, show "about" ditty
                echo -e "\nMAC address looker upper.\nInvoke it with the router IP"
                exit
        else
                for macEntry in $(clogin -c "show ip arp" $1 | grep ARPA | awk '{print $4}' | cut -c 1-4,6-7 | sort -u )
                do
                        grep -i "$macEntry" "$OUIList"
                done | sort --key=3 | sed 's/.base 16.\t//g'
        fi
}


function switchMAC() {
        # invoke with IP as argument
        if [ -z "$1" ]; then   ## Check for args, and if none, show "about" ditty
                echo -e "\nMAC address looker upper.\nInvoke it with the switch IP"
                exit
        else

                for macEntry in $(clogin -c "show mac addr | e CPU" $1 | grep -e "\/" | cut -c 9-12,14-15 | sort -u )
                do
                        grep -i "$macEntry" "$OUIList"
                done | sort --key=3 | sed 's/.base 16.\t//g'
        fi
}

function macList() {
        if [ -z "$1" ]; then   ## Check for args, and if none, show "about" ditty
                echo -e "\nMAC address looker upper.\nInvoke it with the text file name. Assumes MAC address in first column."
                exit
        else

                for macEntry in $(cat $1 | cut -c 1-4,6-7 | sort -u )
                do
                        grep -i "$macEntry" "$OUIList"
                done | sort --key=3 | sed 's/.base 16.//g'
        fi       
}