实验部署图：
网络拓扑图：
计算节点（compute02）Flow table：
VM1 ping VM3(网络节点的网关tap 处于down)：
修改计算节点（compute02）的脚本：
1 #tabl3 20: 2 ovs-ofctl add-flow br-tun "hard_timeout=0 idle_timeout=0 table=20, priority=3,dl_vlan=1,dl_dst=fa:16:3e:64:c2:a8,nw_dst=192.168.1.0/24 actions=goto_table:60" 3 ovs-ofctl add-flow br-tun "hard_timeout=0 idle_timeout=0 table=20, priority=3,dl_vlan=2,dl_dst=fa:16:3e:ac:8a:27,nw_dst=192.168.0.0/24 actions=goto_table:60" 4 5 6 #table 60: 7 ovs-ofctl add-flow br-tun "hard_timeout=0 idle_timeout=0 priority=2049 table=60 dl_vlan=1,dl_dst=fa:16:3e:64:c2:a8,nw_dst=192.168.0.1 actions=goto_table:100" 8 ovs-ofctl add-flow br-tun "hard_timeout=0 idle_timeout=0 priority=2049 table=60 dl_vlan=1,dl_dst=fa:16:3e:64:c2:a8,nw_dst=192.168.1.1 actions=goto_table:100" 9 ovs-ofctl add-flow br-tun "hard_timeout=0 idle_timeout=0 priority=2049 table=60 dl_vlan=2,dl_dst=fa:16:3e:ac:8a:27,nw_dst=192.168.0.1 actions=goto_table:100"10 ovs-ofctl add-flow br-tun "hard_timeout=0 idle_timeout=0 priority=2049 table=60 dl_vlan=2,dl_dst=fa:16:3e:ac:8a:27,nw_dst=192.168.1.1 actions=goto_table:100"11 12 ovs-ofctl add-flow br-tun "hard_timeout=0 idle_timeout=0 priority=2048 table=60 dl_vlan=1,nw_dst=192.168.1.0/24 actions=set_field:fa:16:3e:ac:8a:27->eth_src,dec_ttl,mod_vlan_vid:2,goto_table:70"13 ovs-ofctl add-flow br-tun "hard_timeout=0 idle_timeout=0 priority=2048 table=60 dl_vlan=2,nw_dst=192.168.0.0/24 actions=set_field:fa:16:3e:64:c2:a8->eth_src,dec_ttl,mod_vlan_vid:1,goto_table:70"14 15 #table 70:16 ovs-ofctl add-flow br-tun "hard_timeout=0 idle_timeout=0 table=70, priority=0 actions=,resubmit(,100)"17 ovs-ofctl add-flow br-tun "hard_timeout=0 idle_timeout=0 table=70, priority=1024,ip,dl_vlan=2,nw_dst=192.168.1.4 actions=set_field:fa:16:3e:5d:92:3f->eth_dst,goto_table:100"18 ovs-ofctl add-flow br-tun "hard_timeout=0 idle_timeout=0 table=70, priority=1024,ip,dl_vlan=1,nw_dst=192.168.0.3 actions=set_field:fa:16:3e:13:3d:b7->eth_dst,goto_table:100"19 20 #table 100:21 ovs-ofctl add-flow br-tun "hard_timeout=0 idle_timeout=0 table=100, priority=65535,ip,dl_vlan=1,dl_dst=fa:16:3e:13:3d:b7 actions=output:in_port"22 ovs-ofctl add-flow br-tun "hard_timeout=0 idle_timeout=0 table=100, priority=65535,ip,dl_vlan=2,dl_dst=fa:16:3e:5d:92:3f actions=output:in_port"23 24 25 #mod table:26 ovs-ofctl --strict mod-flows br-tun "hard_timeout=0 idle_timeout=0 table=20, priority=0 actions=resubmit(,60)"