实验拓扑
拓扑实现脚本
ip netns add ns1
ip netns add ns2
ip netns add ns3
ip netns add ns4 ovs-vsctl add-br br0
ovs-vsctl add-br br1 ovs-vsctl add-port br0 tap1 -- set Interface tap1 type=internal
ip link set tap1 netns ns1
ip netns exec ns1 ip addr add 1.1.1.1/24 dev tap1
ip netns exec ns1 ip link set tap1 up
ip netns exec ns1 ip link set lo up ovs-vsctl add-port br0 tap2 -- set Interface tap2 type=internal
ip link set tap2 netns ns2
ip netns exec ns2 ip addr add 1.1.1.2/24 dev tap2
ip netns exec ns2 ip link set tap2 up
ip netns exec ns2 ip link set lo up ovs-vsctl add-port br0 tap3 -- set Interface tap3 type=internal
ip link set tap3 netns ns3
ip netns exec ns3 ip addr add 1.1.1.3/24 dev tap3
ip netns exec ns3 ip link set tap3 up
ip netns exec ns3 ip link set lo up ip link add firstbr type veth peer name firstif ovs-vsctl add-port br0 firstbr
ovs-vsctl add-port br1 firstif
ip link set firstbr up
ip link set firstif up ovs-vsctl add-port br1 tap4 -- set Interface tap4 type=internal
ip link set tap4 netns ns4
ip netns exec ns4 ip addr add 1.1.1.4/24 dev tap4
ip netns exec ns4 ip link set tap4 up
ip netns exec ns4 ip link set lo up
- 拓扑销毁方法
ip link del firstbr type veth peer name firstif
ovs-vsctl del-br br0
ovs-vsctl del-br br1
ip netns del ns1
ip netns del ns2
ip netns del ns3
ip netns del ns4
测试验证方法
在服务端
#在ns4串口中netserver开启流量测试服务端
root@controller-VirtualBox:~# netserver
Starting netserver with host 'IN(6)ADDR_ANY' port '12865' and family AF_UNSPEC root@controller-VirtualBox:~# netstat -ntlp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp6 0 0 :::12865 :::* LISTEN 14197/netserver
在测试端
第四列为速率： 36669.53(即约36Gbps)
root@controller-VirtualBox:~# netperf -H 1.1.1.4 -t UDP_STREAM
MIGRATED UDP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 1.1.1.4 (1.1.1.4) port 0 AF_INET : demo
Socket Message Elapsed Messages
Size Size Time Okay Errors Throughput
bytes bytes secs # # 10^6bits/sec 212992 65507 10.00 700111 0 36688.91
212992 10.00 699741 36669.53
设置接口firstif发包速率10Mbps
ovs-vsctl set Interface firstif ingress_policing_rate=10000
ovs-vsctl set Interface firstif ingress_policing_burst=10000
测试结论：
如下结论，从ns1->ns4 104741.35
从ns4->ns1 10.27
也就是当流量走入接口firstif后速率限制为10Mbps,导致到ns4位10Mbps,因此回程流量（ns4->ns1）为10Mbps左右
root@controller-VirtualBox:~# netperf -H 1.1.1.4 -t UDP_STREAM
MIGRATED UDP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 1.1.1.4 (1.1.1.4) port 0 AF_INET : demo
Socket Message Elapsed Messages
Size Size Time Okay Errors Throughput
bytes bytes secs # # 10^6bits/sec 212992 65507 10.00 1998882 0 104741.35
212992 10.00 196 10.27
清除接口速率限制方法
ovs-vsctl set Interface firstif ingress_policing_rate=0
ovs-vsctl set Interface firstif ingress_policing_burst=0