使用 Linux 下的 TC 流量控制测试
需要对网关做流量控制，针对IP和网段做控制，也有结合iptables实现方式，可能也有针对内外网的服务器，规则明白了，都很容易。
下面是shell脚本，非iptables方式：
#!/bin/bash
# Set the following values to somewhat less than your actual download
# and uplink speed. In kilobits. Also set the device that is to be shaped.
#INGOING traffic (gateway)
IN=eth0
#what ip do you want to limit
INET="192.168.138."
IPS="100"
IPE="254"
#Total DOWNLINK
DOWN="100mbit"
#ensure rate speed of DOWNLINK
DOWNLOADrate="100kbit"
#Allow max rate speed of DOWNLINK
DOWNLOADceil="250kbit"
start(){
#clean eth1 eth0 existing down- and uplink qdiscs, hide errors
/sbin/tc qdisc del dev $IN root 2>/dev/null
# install root htb of downlink and uplink
# main class
/sbin/tc qdisc add dev $IN root handle 1: htb
/sbin/tc class add dev $IN parent 1: classid 1:1 htb rate $DOWN ceil $DOWN
#simgle ip limit
/sbin/tc class add dev $IN parent 1:1 classid 1:2 htb rate $DOWNLOADrate ceil $DOWNLOADrate
/sbin/tc qdisc add dev $IN parent 1:2 sfq perturb 2
/sbin/tc filter add dev $IN protocol ip parent 1: prio 49 u32 match ip dst 192.168.138.10 flowid 1:2
/sbin/tc filter add dev $IN protocol ip parent 1: prio 49 u32 match ip dst 192.168.2.0/32 flowid 1:2
#net1 limit
for (( i=$IPS; i<=$IPE; i=i+1 ))
do
#####Control DOWNLINK
/sbin/tc class add dev $IN parent 1:1 classid 1:1$i htb rate $DOWNLOADrate ceil $DOWNLOADceil
/sbin/tc qdisc add dev $IN parent 1:1$i sfq perturb 1$i
/sbin/tc filter add dev $IN protocol ip parent 1: prio 50 u32 match ip dst $INET$i flowid 1:1$i
done
#net2 limit
#for (( i=$IPS; i<=$IPE; i=i+1 ))
#do
# #####Control DOWNLINK
# /sbin/tc class add dev $IN parent 1:1 classid 1:2$i htb rate $DOWNLOADrate ceil $DOWNLOADceil
# /sbin/tc qdisc add dev $IN parent 1:2$i sfq perturb 2$i
# /sbin/tc filter add dev $IN protocol ip parent 1: prio 50 u32 match ip dst $INET$i flowid 1:2$i
#done
#Other traffic
/sbin/tc filter add dev $IN protocol ip parent 1: prio 2 u32 match ip dst 0.0.0.0/32 flowid 1:1
}
stop(){
echo -n "(Delete all qdisc......)"
(/sbin/tc qdisc del dev $IN root 2>/dev/null && echo "ok.Delete sucessfully!") || echo "error."
}
#show status
status() {
echo "1.show qdisc $IN:----------------------------------------------"
/sbin/tc -s qdisc show dev $IN
echo "2.show class $IN:----------------------------------------------"
N1=`/sbin/tc class show dev $IN | wc -l`
if [ $N1 == 0 ];then
echo "NULL, OFF Limiting "
else
/sbin/tc -s class show dev $IN
echo "It work"
fi
}
#show help
usage() {
echo "(usage): `basename $0` [start | stop | restart | status ]"
echo "help:"
echo "start -- TC Flow Control start"
echo "stop -- TC Flow Control stop"
echo "restart -- TC Flow Control restart"
echo "status -- TC Show all TC Qdisc and class"
}
case "$1" in
start)
( start && echo "Flow Control! TC started!" ) || echo "error."
exit 0
;;
stop)
( stop && echo "Flow Control TC stopped!" ) || echo "error."
exit 0
;;
restart)
stop
start
echo "Flow Control restart"
;;
status)
status
;;
*) usage
exit 1
;;
esac