dler wrote:
有間接關係
直接一點 不好嗎?
http://blog.kloud.com.au/2014/03/28/simulate-moving-to-the-cloud-with-newt/
以前記得有直接安裝檔的，找不到了
現在這個可能需要POWERSHELL來安裝，要先安裝他的環境 Chocolatey，好像先安裝git或是pip這樣
然後就能直接裝直接用了
如果是linux的比較麻煩，可能要三個port，假設IP在A port上，A port連接B port，然後對外網路線放在C port
然後去找brctl的指令，把B和C port建起來bridge。不喜歡brctl可以安裝openvswitch(ovs) 一樣可以建立bridge
然後寫script
#!/bin/sh
BW=155Mbit
pkt_loss=1%
latency=0ms
net0=eth0
net1=eth1
waittime=60
echo "===== starting ======"
tc qdisc del dev $net0 root
tc qdisc del dev $net1 root
sleep 2
echo "1."$net0" & "$net1" profile deleted"
#tc qdisc add dev $net root tbf rate 1.5mbit burst 16kb latency 1ms
#tc qdisc add dev $net root handle 1:0 cbq bandwidth 10Mbit avpkt 100 cell 8
tc qdisc add dev $net0 root handle 1:0 htb default 1
tc qdisc add dev $net1 root handle 1:0 htb default 1
tc class add dev $net0 parent 1:0 classid 1:1 htb rate $BW ceil $BW
tc class add dev $net1 parent 1:0 classid 1:1 htb rate $BW ceil $BW
echo "2. Bandwidth limited at "$BW"."
#tc class add dev $net parent 1:0 classid 1:1 htb rate 155Mbit ceil 155Mbit
#tc qdisc add dev $net parent 1:1 handle 10: netem loss 0.5% delay 0ms
#tc qdisc add dev $net parent 1:1 handle 10: netem delay 20ms
tc qdisc add dev $net0 parent 1:1 handle 10: netem loss $pkt_loss delay $latency
tc qdisc add dev $net1 parent 1:1 handle 10: netem loss $pkt_loss delay $latency
echo "3.Adjusted packet loss rate = "$pkt_loss" each way, latency= "$latency" each way."
tc filter add dev $net0 parent 1:0 protocol ip prio 1 u32 match ip src 0/0 flowid 1:1
tc filter add dev $net1 parent 1:0 protocol ip prio 1 u32 match ip src 0/0 flowid 1:1
echo "======= done ========"
sleep $waittime
#done
也许是一场难圆的梦
一场没有结局的梦
多少的笑语飞散在风中
又围绕在我耳边
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