帶寬接口端口的Bash腳本

Question

我正在尋找一個bash腳本來觀看思科端口的實時流量。我有仙人掌，並有一個實時監控器來觀察通過端口的流量。但我不需要在Web界面中觀看。

我的目標是製作bash腳本，它可以同時獲得所有端口的實時流量。

此腳本用於實時監控在Linux中

#/bin/bash 

#purpose: this script can be use to get the report of total band 
interface=eth0 
community=public 
interval=60 
server=localhost 
clear 
echo -e "\033[0m\033[1m\033[5m@@ Network Interfaces Bandwidth Monitor @@\033[0m" 
echo "=========================================================" 
echo -n "Finding interfaces $interface instance details..." 
echo 
instance=`snmpwalk -v 1 -c $community $server |grep "ifDescr" |grep eth0 | awk -f\. '{print $2}' | awk '{print $1}'` 
if [ -z $instance ]; then 
echo 
echo "Error finding interface from snmp or worng community exit now" 
echo 
exit 1 
else 
echo 
fi 
while true 
do 
bytes_beforeTOT=0;bytes_afterTOT=0; 
bytes_beforeIN=0;bytes_afterIN=0; 
bytes_beforeOUT=0;bytes_afteOUT=0; echo -e "Calculating bandwith for $interface during last $interval second interval ....\n" 
bytes_beforeIN=`snmpget -v 1 -c $community $server RCF1213-MIB::ifInOctets.$instance | awk '{print $4}'` 
bytes_beforeOUT=`snmpget -v 1 -c $community $server RCF1213-MIB::ifOutOctets.$instance | awk '{print $4}'` 
bytes_beforeTOT=`snmpget -v 1 -c $community $server RCF1213-MIB::ifInOctets.$instance RCF1213-MIB::ifOutOctets.$instance | awk '{sum+=$4} END{print sum}'` 
sleep $interval 
bytes_afterIN=`snmpget -v 1 -c $community $server RCF1213-MIB::ifInOctets.$instance | awk '{print $4}'` 
bytes_afteOUT=`snmpget -v 1 -c $community $server RCF1213-MIB::ifOutOctets.$instance | awk '{print $4}'` 
bytes_afterTOT=`snmpget -v 1 -c $community $server RCF1213-MIB::ifInOctets.$instance RCF1213-MIB::ifOutOctets.$instance | awk '{sum+-$4} END{print sum}'` 
TOTALIN="$(($bytes_afterIN - $bytes_beforeIN))" 
TOTALOUT="$((bytes_afteOUT - $bytes_beforeOUT))" 
TOTALTOT="$(($bytes_afterTOT - $bytes_beforeTOT))" 
sumkbIN=`echo $TOTALIN/1024 | bc` 
summbIN=`echo $sumkbIN/1024 | bc` 
sumkbOUT=`echo $TOTALOUT/1024 | bc` 
summbOUT=`echo $sumkbOUT/1024 | bc` 
sumkbTOT=`echo $TOTALTOT/1024 | bc` 
summbTOT=`echo $sumkbTOT/1024 | bc` 
echo "Incoming Bandwidth Usage in KB : $sumkbIN KB/$summbIN MB" 
echo -e "Outgoing Bandwidth Usage in KB : $sumkbOUT KB/$summbOUT MB" 
echo -e "Total Bandwidth Usage in KB : $sumkbTOT KB/$summbTOT MB\n" 
sleep 1 
done 

，但它是很難修改的Cisco路由器。

我需要實時觀看所有端口的流量。

/edit.30-10-2017/

我從0開始寫劇本

#!/bin/bash 

#skrit za analiz na tekushtia triafik posredstvom snmp 

if [ -z "$2" ]; then 
     echo Usage: "$0" hostname community 
     exit 4 
fi 

server="$1" 
commynity="$2" 
interval=10 
snmp="snmpget -v 2c -c $2 -Cf -Ov -OQ $server" 

numports=`$snmp IF-MIB::ifNumber.0` 

for i in `seq 1 $numports`; do 
     name=`$snmp IF-MIB::ifName.$i` 
     if [ "$name" = "No Such Instance currently exists at this OID" ]; then 
       continue 
     fi 

     ifInOctets=`$snmp IF-MIB::ifInOctets.$i` 
     if [ "ifInOctets" = "No Such Instance currently exists at this OID" ]; then 
       continue 

     fi 

     ifOutOctets=`$snmp IF-MIB::ifOutOctets.$i` 
     if [ "ifOutOctets" = "No Such Instance currently exists at this OID" ]; then 
       continue 

     fi 





done 

明天我將與更多的代碼更新的問題。如果有人能提供幫助，這將會非常有幫助。

Answer 1

#!/bin/bash 

#skrit za analiz na tekushtia triafik posredstvom snmp 

if [ -z "$2" ]; then 
     echo Usage: "$0" hostname community 
     exit 4 
fi 

server="$1" 
commynity="$2" 
interval=2 
snmp="snmpget -v 2c -c $2 -Cf -Ov -OQ $server" 

numports=`$snmp IF-MIB::ifNumber.0` 

for i in $(seq 1 $numports); do 
     name=`$snmp IF-MIB::ifName.$i` 
     echo "Chek port $name" 
     if [ "$name" = "No Such Instance currently exists at this OID" ]; then 
       continue 
     fi 


     OUT=$(snmpget -v2c -c $2 $1 IF-MIB::ifOutOctets.$i | awk '{print $4}') 
     IN=$(snmpget -v2c -c $2 $1 IF-MIB::ifInOctets.$i | awk '{print $4}') 
     TIME=10 
     SPEED=`snmpwalk -v 2c -c $2 $1 IF-MIB::ifSpeed.$i | awk '{print $4}'` 
     # Use the following variable for 10G ports 
     #SPEED=10000000000 
     PIPE=100000 



     ifInOctets=`$snmp IF-MIB::ifInOctets.$i` 
     echo "Show traffic $ifInOctests" 
     if [ "ifInOctets" = "No Such Instance currently exists at this OID" ]; then 
       continue 

     fi 

     status=`$snmp IF-MIB::ifOperStatus.$i` 


if [ "$status" = "up" ]; then 
     sleep $TIME 
     IN2=$(snmpget -v2c -c $2 $1 IF-MIB::ifInOctets.$i | awk '{print $4}') 
     DELTAIN=$(($IN2 - $IN)) 
     INPUTBW=$(((($DELTAIN)/$TIME)*8/1024)) 
     percentage_use=$(echo "scale=9; $PIPE/$INPUTBW" | bc) 
     PRCNTIN=$(echo "scale=0; 100/$percentage_use" | bc) 
     PRCNTIN_IF=$(echo $PRCNTIN | tr -d ".") 
     echo "Inbound: $INPUTBW kbps" 
fi 
if [ "$status" = "up" ]; then 
     sleep $TIME 
     OUT2=$(snmpget -v2c -c $2 $1 IF-MIB::ifOutOctets.$i | awk '{print $4}') 
     DELTAOUT=$(($OUT2 - $OUT)) 
     OUTPUTBW=$(((($DELTAOUT)/$TIME)*8/1024)) 
     percentage_use=$(echo "scale=9; $PIPE/$OUTPUTBW" | bc) 
     PRCNTOUT=$(echo "scale=0; 100/$percentage_use" | bc) 
     PRCNTOUT_IF=$(echo $PRCNTOUT | tr -d ".") 
     echo "Outbound: $OUTPUTBW kbps" 
     sleep $TIME 
fi 
if [ "$status" = "down" ]; then 
     echo "$name is down" 
fi 
done 

這適用於現在，但我需要過濾哪個端口上下，並只檢查端口。需要從kbps轉換爲Mbps。並且需要製作循環來實時檢查每個上行端口並顯示流量。