ovs-ofctl: none of the usable flow formats (OXM,OpenFlow11) is among the allowed flow formats (OpenFlow10,NXM)
报上面的错误一般就是OpenFlow版本格式化的问题,所以下发流表的时候要加上OpenFlow版本(-O OpenFlow13)
例如(流表中添加vlan):ovs-ofctl -O OpenFlow13 add-flow br0 in_port=3,dl_vlan=0xffff,priority=3566,ip,actions=push_vlan:0x8100,load:11-\>OXM_OF_VLAN_VID[],output:1
查询流表也可以带OpenFlow版本
例如:ovs-ofctl -O OpenFlow13 dump-flows br0