linux修改网卡延时、带宽、丢包等

设置带宽的命令

tc qdisc del dev eth1 root

tc qdisc add dev eth1 root handle 1: htb r2q 1
tc class add dev eth1 parent 1: classid 1:1 htb rate 3000kbit burst 10k

[root@chdvm ~]# tc class ls dev eth1

class htb 1:1 root prio 0 rate 3000Kbit ceil 3000Kbit burst 10Kb cburst 1599b

同时设置丢包和带宽。

[root@chdvm ~]# tc qdisc del dev eth1 root

[root@chdvm ~]# tc qdisc add dev eth1 root handle 1: htb

[root@chdvm ~]# tc class add dev eth1 parent 1: classid 1:1 htb rate 3000kbit burst 10k

[root@chdvm ~]# tc qdisc add dev eth1 parent 1:1 handle 10: netem delay 100ms

[root@chdvm ~]# tc qdisc ls dev eth1

qdisc htb 1: root r2q 10 default 0 direct_packets_stat 0

qdisc netem 10: parent 1:1 limit 1000 delay 100.0ms

[root@chdvm ~]# tc class ls dev eth1

class htb 1:1 root leaf 10: prio 0 rate 3000Kbit ceil 3000Kbit burst 10Kb cburst 1599b

class netem 10:1 parent 10: