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| -rw-r--r-- | FAQ | 35 |
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@@ -820,6 +820,41 @@ A: Do you have a controller configured on br0 (as the commands above can refer to the answer there for more information. +VXLANs +----- + +Q: What's a VXLAN? + +A: VXLAN stands for Virtual eXtensible Local Area Network, and is a means + to solve the scaling challenges of VLAN networks in a multi-tenant + environment. VXLAN is an overlay network which transports an L2 network + over an existing L3 network. For more information on VXLAN, please see + the IETF draft available here: + + http://tools.ietf.org/html/draft-mahalingam-dutt-dcops-vxlan-03 + +Q: How much of the VXLAN protocol does Open vSwitch currently support? + +A: Open vSwitch currently supports the framing format for packets on the + wire. There is currently no support for the multicast aspects of VXLAN. + To get around the lack of multicast support, it is possible to + pre-provision MAC to IP address mappings either manually or from a + controller. + +Q: What destination UDP port does the VXLAN implementation in Open vSwitch + use? + +A: By default, Open vSwitch will use the assigned IANA port for VXLAN, which + is 4789. However, it is possible to configure the destination UDP port + manually on a per-VXLAN tunnel basis. An example of this configuration is + provided below. + + ovs-vsctl add-br br0 + ovs-vsctl add-port br0 vxlan1 -- set interface vxlan1 + type=vxlan options:remote_ip=192.168.1.2 options:key=flow + options:dst_port=8472 + + Controllers ----------- |