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[size=85]#!/bin/bash
#Ussage: Check input bandwidth on each switch port
########## ./check_bw $IP_of_switch $port_No_with_slash $max_threshold $min_threshold#####
########## Version 3.0  ########################################
################################################################
########### Created by Thanh.ha ##############################
########                            ###########################
###############################################################
###############################################################
print_usage() {
  echo "Usage: ./check_bw -H Address  -p port_number - I value_in_Kbps -i value_in_Kbps -O value_in_Kbps -o value_in_Kbps"
  echo "  ./$SCRIPTNAME -H ADDRESS"
  echo "  ./$SCRIPTNAME -p STRING"
  echo "  ./$SCRIPTNAME -I STRING"
  echo "  ./$SCRIPTNAME -i INTEGER"
  echo "  ./$SCRIPTNAME -O INTEGER"
  echo "  ./$SCRIPTNAME -o INTEGER"
  echo "  ./$SCRIPTNAME -h"
  echo "  ./$SCRIPTNAME -V"
  echo "Example: ./check_bw -H 10.255.0.251 -p g0/2  -I 100000 -i  100 -O 100000 -o 100"
}

print_version() {
  echo "$SCRIPTNAME" version "$VERSION"
  echo "fix UNKNOWN error"
  echo "********* NOTE *********************************"
  echo "This nagios plugins comes with ABSOLUTELY NO WARRANTY."
  echo "You may redistribute copies of the plugins under the terms of the GNU General Public License v2."
  echo "Written by hafthanhf"
}

print_help() {
  print_version
  print_usage
}

# Plugin return statements
NORMAL=0
WARNING=1
CRITICAL=2
UNKNOWN=3

OID_sysDescr=SNMPv2-MIB::sysDescr.0 
OID_bw_in_junos="1.3.6.1.4.1.2636.3.3.1.1.1"
OID_bw_out_junos="1.3.6.1.4.1.2636.3.3.1.1.4"
# Default variables

VERSION=2.5
DESCRIPTION="Unknown"
STATE="$STATE_UNKNOWN"
STATE_MESSAGE="UNKNOWN"

# Default options
COMMUNITY="****"
HOSTNAME="127.0.0.1"
#VERSION="2c"
#WARNING=0
#CRITICAL=0
PATH1=/usr/local/nagios/libexec/
PATH2=/usr/local/nagios/var
while getopts H:p:I:i:O:o:hV OPT
do
  case "$OPT" in
    H) HOSTNAME="$OPTARG" ;;
    p) PORTNo="$OPTARG" ;;
    I) MAXinTH="$OPTARG" ;;
    i) MINinTH="$OPTARG" ;;
    O) MAXoutTH="$OPTARG" ;;
    o) MINoutTH="$OPTARG" ;;
    h) print_help
       exit "$UNKNOWN" ;;
    V) print_version
       exit "$UNKNOWN" ;;
   esac
done

#Start to processing
################# SYSTEM INFO   ############
###########################################
#Get system infomation
sysinfo=`snmpwalk -v 2c -c $COMMUNITY $HOSTNAME $OID_sysDescr | awk 'NR==1 {print $4}'`
#Get Interface's OID
ifoid=`snmpwalk -v 2c -c $COMMUNITY $HOSTNAME IF-MIB::ifDescr | grep "\<$PORTNo\>" | awk -F '[{. }]'  '{print $2}'`
#Get Interface's description
portname=`snmpwalk -v 2c -c $COMMUNITY $HOSTNAME IF-MIB::ifAlias.$ifoid |  awk -F '[{:}]' '{print $4}'`
###########log#############
timelog=$PATH2/bwlog/timelog_$HOSTNAME"_"$ifoid
outlog=$PATH2/bwlog/byteout_$HOSTNAME"_"$ifoid
inlog=$PATH2/bwlog/bytein_$HOSTNAME"_"$ifoid
################# Traffic INFO   ############
###########################################
byteout=`snmpwalk -v 2c -c $COMMUNITY $HOSTNAME IF-MIB::ifOutOctets.$ifoid | awk -F '[{:}]' '{ print $4 }'`
bytein=`snmpwalk -v 2c -c $COMMUNITY $HOSTNAME IF-MIB::ifInOctets.$ifoid | awk -F '[{:}]' '{ print $4 }' `
date1=`cat $(echo $timelog)`
date2=`date +%s`
timediff=$(( $date2 - $date1 ))
#bytein1=`cat $inlog`
#byteout1=`cat $outlog`
indiff=$(($bytein - `cat $inlog`))
### debug###
#echo $indiff
outdiff=$(($byteout - `cat $outlog`))
#echo $outdiff
echo $(date +%s) > $timelog
echo "$byteout" > $outlog
echo "$bytein" > $inlog
bw_in=`expr $indiff \* 8 / $timediff / 1000`
bw_out=`expr $outdiff \* 8 / $timediff / 1000`
if [ $bw_in -ge 0 ] && [ $bw_out -ge 0 ] ; then
        if [ $bw_in -le $MAXinTH ] && [ $bw_in -ge $MINinTH ]; then
                if [ $bw_out -lt $MAXoutTH ] && [ $bw_out -gt $MINoutTH ] ; then
                        /usr/bin/printf "%b" "Cong $PORTNo : $channel hoat dong binh thuong\n\n Bang thong tren cong $PORTNo luc nay la:\nInput: $bw_in Kbps\nOutput: $bw_out Kbps"
                        exit 0
                        elif [ $bw_out -ge $MAXoutTH ] ; then
			/usr/bin/printf "%b" "Canh bao! Bang thong output tren: $PORTNo :  $channel cao qua, co the dang nghen duong truyen, lien he to GPON de tro giup \n\n Bang thong tren cong $PORTNo luc nay la: \n Output bandwidth: $bw_out Kbps\n Input bandwidth: $bw_in Kbps"
                                exit $CRITICAL
                        else
				echo -e "Canh bao! Bang thong output tren: $PORTNo : $channel dang thap qua, co the bi dut UPLINK!\nBang thong tren cong $PORTNo luc nay la: \n Output bandwidth: $bw_out Kbps\n Input bandwidth: $bw_in Kbps"
	                        exit $CRITICAL
                fi
        elif [  $bw_in -gt $MAXinTH ] ; then
				echo -e "Canh bao! Bang thong input tren: $PORTNo :  cao qua, co the dang nghen duong truyen, lien he to GPON de tro giup\nBang thong tren cong $PORTNo luc nay la: \n Output bandwidth: $bw_out Kbps\n Input bandwidth: $bw_in Kbps"
                exit $CRITICAL
        else
				echo -e "Canh bao! Bang thong input tren: $PORTNo : $channel dang thap qua, co the bi dut UPLINK!\nBang thong tren cong $PORTNo luc nay la: \n Output bandwidth: $bw_out Kbps\n Input bandwidth: $bw_in Kbps"
                exit $CRITICAL
        fi
else
#       echo -e "Bang thong tren cong $PORTNo luc nay la: \n Output bandwidth: $bw_out Kbps\n Input bandwidth: $bw_in Kbps"
#	echo "Khong lay duoc thong tin tren thiet bi, doi mot chut ....."
        exit $UNKNOWN
fi[/size]

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su nagios 
/usr/local/nagios/libexec/your_script.sh
echo $?

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Canh bao! Bang thong input tren: e0/1/1 :  cao qua, co the dang nghen duong truyen, lien he to GPON de tro giup
Bang thong tren cong e0/1/1 luc nay la: 
 Output bandwidth: 133854 Kbps
 Input bandwidth: 4638 Kbps

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