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Open vSwitch Bridge and NetworkNameSpace Command Cheat

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  • 启动

      service openvswitch start

  • 创建网桥

      ovs-vsctl add-br br0
  ifconfig br0 up

  • 显示所有网桥

      ovs-vsctl show

  • 删除网桥

      ovs-vsctl del-br br0

  • 增加端口

      ovs-vsctl add-port br0 eth0

  • 设置网卡为none

      dhclient br0

  • 用 Namespace 模拟两台虚拟机网络

      p netns add network1
  ip netns add network2

  • 创建两个虚拟网卡并加入网桥

      ovs-vsctl add-port br0 vport1 -- set interface vport1 type=internal
  ovs-vsctl add-port br0 vport2 -- set interface vport2 type=internal
  tunctl -p -t vport1
  tunctl -p -t vport2

  • 两个虚拟网卡接入namespace

      ip link set vport1 netns network1
  ip link set vport2 netns network2

  • 设置虚拟网卡的IP

      ip netns exec network1 ifconfig vport1 192.168.0.1/24 up
  ip netns exec network2 ifconfig vport2 192.168.0.2/24 up

  • 两个namsespace PING

      ip netns exec network1 ping 192.168.0.2
  ip netns exec network2 tcpdump -i vport2

  • 两个namsespace NC传输

      ip netns exec network2 nc -l 1234
  ip netns exec network2 tcpdump -i vport2
  ip netns exec network1 nc 192.168.0.2 1234

  • 显示vlan信息

      ovs-appctl fdb/show br0

  • 显示openflow信息

      ovs-ofctl show br0

  • 显示流表信息

      ovs-ofctl dump-flows br0

  • 显示网桥详细信息

      ovs-vsctl list Bridge

  • 显示端口详细信息

      ovs-vsctl list Port

  • 显示接口详细信息

      ovs-vsctl list Interface

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