#!/bin/bash

# ip коммутатора
host="XX.XX.XX.XX"
# комьюнити
community="private"
# порт коммутатора, на котором снимать статистику
port="39"
# период через который снимать статистику в секундах
period="30"
# время выполнения скрипта в секундах
time="600"
# Для Counter32 как параметр задать "32"
counter=$1

time=$[`date "+%s"` + $time]
printf "Host: $host \tPort: $port \t"
if [ "$counter" == "32" ]; then printf "Counter32\n"; else printf "Counter64\n"; fi

if [ "$counter" == "32" ]; then
  mib_out="1.3.6.1.2.1.2.2.1.16"
  mib_in="1.3.6.1.2.1.2.2.1.10"
else
  mib_out="1.3.6.1.2.1.31.1.1.1.10"
  mib_in="1.3.6.1.2.1.31.1.1.1.6"
fi

out_old=$(snmpwalk -v2c -On -c $community $host $mib_out.$port)
in_old=$(snmpwalk -v2c -On -c $community $host $mib_in.$port)
if [ "$counter" == "32" ]; then
  out_old=${out_old/*Counter32\:}
  in_old=${in_old/*Counter32\:}
else
  out_old=${out_old/*Counter64\:}
  in_old=${in_old/*Counter64\:}
fi
while [ `date "+%s"` -lt $time ]; do
    sleep $period
    out_new=$(snmpwalk -v2c -On -c $community $host $mib_out.$port)
    in_new=$(snmpwalk -v2c -On -c $community $host $mib_in.$port)
    if [ "$counter" == "32" ]; then
      out_new=${out_new/*Counter32\:}
      in_new=${in_new/*Counter32\:}
    else
      out_new=${out_new/*Counter64\:}
      in_new=${in_new/*Counter64\:}
    fi
    outspeed=$[$[$out_new - $out_old]*8/$period/1024/1024]
    inspeed=$[$[$in_new - $in_old]*8/$period/1024/1024]
    printf "`date "+%T"` \tSpeed (in)= ${inspeed} Mbit/s \tSpeed (out)= ${outspeed} Mbit/s \n"
    out_old=$out_new
    in_old=$in_new
done

Host: XX.XX.XX.XX    Port: 39    Counter64
16:11:33    Speed (in)= 34 Mbit/s    Speed (out)= 1100 Mbit/s
16:12:04    Speed (in)= 37 Mbit/s    Speed (out)= 7 Mbit/s
16:12:35    Speed (in)= 37 Mbit/s    Speed (out)= 8 Mbit/s
16:13:06    Speed (in)= 38 Mbit/s    Speed (out)= 7 Mbit/s
16:13:36    Speed (in)= 36 Mbit/s    Speed (out)= 7 Mbit/s
16:14:07    Speed (in)= 39 Mbit/s    Speed (out)= 8 Mbit/s
16:14:38    Speed (in)= 1127 Mbit/s    Speed (out)= 8 Mbit/s
16:15:08    Speed (in)= 36 Mbit/s    Speed (out)= 7 Mbit/s
16:15:39    Speed (in)= 35 Mbit/s    Speed (out)= 1100 Mbit/s
16:16:10    Speed (in)= 38 Mbit/s    Speed (out)= 8 Mbit/s
16:16:40    Speed (in)= 39 Mbit/s    Speed (out)= 7 Mbit/s
16:17:11    Speed (in)= 39 Mbit/s    Speed (out)= 8 Mbit/s
16:17:42    Speed (in)= 1129 Mbit/s    Speed (out)= 8 Mbit/s
16:18:13    Speed (in)= 37 Mbit/s    Speed (out)= 7 Mbit/s
16:18:43    Speed (in)= 35 Mbit/s    Speed (out)= 7 Mbit/s
16:19:14    Speed (in)= 36 Mbit/s    Speed (out)= 8 Mbit/s
16:19:44    Speed (in)= 34 Mbit/s    Speed (out)= 1099 Mbit/s
16:20:15    Speed (in)= 32 Mbit/s    Speed (out)= 7 Mbit/s
16:20:46    Speed (in)= 34 Mbit/s    Speed (out)= 8 Mbit/s
16:21:16    Speed (in)= 1130 Mbit/s    Speed (out)= 8 Mbit/s

Host: XX.XX.XX.XX    Port: 39    Counter32
16:11:33    Speed (in)= 35 Mbit/s    Speed (out)= 8 Mbit/s
16:12:04    Speed (in)= 37 Mbit/s    Speed (out)= 7 Mbit/s
16:12:35    Speed (in)= 36 Mbit/s    Speed (out)= 7 Mbit/s
16:13:06    Speed (in)= 38 Mbit/s    Speed (out)= 8 Mbit/s
16:13:36    Speed (in)= 36 Mbit/s    Speed (out)= 7 Mbit/s
16:14:07    Speed (in)= 39 Mbit/s    Speed (out)= 8 Mbit/s
16:14:37    Speed (in)= 35 Mbit/s    Speed (out)= 7 Mbit/s
16:15:08    Speed (in)= 36 Mbit/s    Speed (out)= 7 Mbit/s
16:15:39    Speed (in)= 35 Mbit/s    Speed (out)= 8 Mbit/s
16:16:09    Speed (in)= 38 Mbit/s    Speed (out)= 8 Mbit/s
16:16:40    Speed (in)= 38 Mbit/s    Speed (out)= 8 Mbit/s
16:17:11    Speed (in)= 39 Mbit/s    Speed (out)= 8 Mbit/s
16:17:41    Speed (in)= -1054 Mbit/s    Speed (out)= 8 Mbit/s
16:18:12    Speed (in)= 37 Mbit/s    Speed (out)= 7 Mbit/s
16:18:43    Speed (in)= 36 Mbit/s    Speed (out)= 7 Mbit/s
16:19:14    Speed (in)= 36 Mbit/s    Speed (out)= 8 Mbit/s
16:19:44    Speed (in)= 33 Mbit/s    Speed (out)= 7 Mbit/s
16:20:15    Speed (in)= 33 Mbit/s    Speed (out)= 7 Mbit/s
16:20:46    Speed (in)= 33 Mbit/s    Speed (out)= 8 Mbit/s
16:21:16    Speed (in)= 37 Mbit/s    Speed (out)= 8 Mbit/s