[ovs-dev] [PATCH 2/2] Add FAQ entries around the VXLAN support in Open vSwitch.
Kyle Mestery
kmestery at cisco.com
Fri Apr 26 17:53:14 UTC 2013
Add a section to the FAQ explaining VXLAN with a pointer to the IETF draft.
Add sections detailing how much of the VXLAN protocol is currently supported
in OVS, along with a section explaining the default UDP port and how to change
this when creating VXLAN ports.
Signed-off-by: Kyle Mestery <kmestery at cisco.com>
---
FAQ | 35 +++++++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/FAQ b/FAQ
index c266b7b..8991cc3 100644
--- a/FAQ
+++ b/FAQ
@@ -890,6 +890,41 @@ 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
+ when dealing with broadcast packets. 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
+
+
Using OpenFlow (Manually or Via Controller)
-------------------------------------------
--
1.8.1.4
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