대역폭 제한 툴

#yum -y install iftop  트래픽 툴

 

vi /etc/init.d/shaping

 

#!/bin/bash
#  tc uses the following units when passed as a parameter.
#  kbps: Kilobytes per second
#  mbps: Megabytes per second
#  kbit: Kilobits per second
#  mbit: Megabits per second
#  bps: Bytes per second
#       Amounts of data can be specified in:
#       kb or k: Kilobytes
#       mb or m: Megabytes
#       mbit: Megabits
#       kbit: Kilobits
#  To get the byte figure from bits, divide the number by 8 bit
#
# tc명령어의 위치를 입력합니다.

TC=/sbin/tc

# 대역폭을 제한하기 위한 이더넷 인터페이스를 지정합니다.
IF=eth0

# 다운로드 속도 제한
DNLD=1mbit

# 업로드 속도 제한
UPLD=1mbit

# 속도 제한을 적용할 호스트의 IP 주소
IP=192.168.0.1
IP=192.168.0.2

# Filter options for limiting the intended interface.
U32="$TC filter add dev $IF protocol ip parent 1:0 prio 1 u32"

start() {
# We'll use Hierarchical Token Bucket (HTB) to shape bandwidth.
# For detailed configuration options, please consult Linux man
# page.

$TC qdisc add dev $IF root handle 1: htb default 30
$TC class add dev $IF parent 1: classid 1:1 htb rate $DNLD
$TC class add dev $IF parent 1: classid 1:2 htb rate $UPLD
$U32 match ip dst $IP/32 flowid 1:1
$U32 match ip src $IP/32 flowid 1:2

# The first line creates the root qdisc, and the next two lines
# create two child qdisc that are to be used to shape download
# and upload bandwidth.
#
# The 4th and 5th line creates the filter to match the interface.
# The 'dst' IP address is used to limit download speed, and the
# 'src' IP address is used to limit upload speed.
}

stop() {

# Stop the bandwidth shaping.
$TC qdisc del dev $IF root

restart() {
# Self-explanatory.
    stop
    sleep 1
    start
}

show() {

# Display status of traffic control status.
$TC -s qdisc ls dev $IF

}

case "$1" in
  start)
    echo -n "Starting bandwidth shaping: "
    start    echo "done"
    ;;
  stop)
    echo -n "Stopping bandwidth shaping: "
    stop    echo "done"
    ;;
  restart)
    echo -n "Restarting bandwidth shaping: "
    restart    echo "done"
    ;;
  show)    echo "Bandwidth shaping status for $IF:"
    show
    echo ""
    ;;
  *)    pwd=$(pwd)
    echo "Usage: tc.bash {start|stop|restart|show}"
    ;;
esac

exit 0