http://networkstatic.net/configuring-vxlan-and-gre-tunnels-on-openvswitch/
using GRE ovs-vsctl add-port br1 gre1 -- set interface gre1 type=gre options:remote_ip=192.168.1.10 ovs-vsctl add-port br1 gre1 -- set interface gre1 type=gre options:remote_ip=192.168.1.11 using VXLAN ovs-vsctl add-port br1 vx1 -- set interface vx1 type=vxlan options:remote_ip=192.168.1.10 ovs-vsctl add-port br1 vx1 -- set interface vx1 type=vxlan options:remote_ip=192.168.1.11 I found that VXLAN setting use very similar setting with GRE version. That makes me confusing about VXLAN concept. As i read through googling(I haven't used it before), VXLAN use IP multicast, and IP multicast needs a multicast group address, not a specific IP of a node. How VXLAN things works at OVS? I could assume that there exists some default multicast group address. But if it is the case, why do i need to fill specific remote address? If VXLAN needs a specific IP of a node, how can i construct vxlan network consist of several nodes? Do i need to set up full-mesh setting for each node? thanks for your help ps. Are there any documents about using vxlan in ovs? I can't find any things about vxlan in man page. I want to look through options for using vxlan.
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