1. BFD for VXLAN draft-spallagatti-bfd-vxlan
Santosh Pallagatti
Sudarsan Paragiri
Vengada Prasad Govindan
Mallik Mudigonda
Greg Mirsky
IETF November, Singapore

2. Update 04-06
Also BFD in VXLAN can be used to monitor special service nodes that are designated to properly handle Layer 2 broadcast, unknown unicast, and multicast traffic. Such nodes, often referred "replicators", are usually virtual VTEPs can be monitored by physical VTEPs in order to minimize BUM traffic directed to unavialable replicator.
This document describes use of Bidirectional Forwarding Detection (BFD) protocol VXLAN to enable continuity monitoring between Network Virtualization Edges (NVEs) and/or availability of a replicator service node using BFD.
While we have been working on this individual draft two independent implementations of BFD over VXLAN have been developed and deployed

3. VXLAN encapsulation of BFD control packet using IPvX/UDP headers
~ Outer Ethernet Header ~ | | ~ Outer IPvX Header ~ ~ Outer UDP Header ~ ~ VXLAN Header ~ ~ Inner Ethernet Header ~ ~ Inner IPvX Header ~ ~ Inner UDP Header ~ ~ BFD Control Message ~ | FCS |
VXLAN encapsulation of BFD control packet using IPvX/UDP headers

4. VXLAN-GPE encapsulation of BFD control packet without IPvX/UDP headers
~ IPvX Header ~ | | ~ UDP Header ~ ~ BFD Control Message ~ | OAM Header (demux OAM protocols) |
VXLAN-GPE encapsulation of BFD control packet using IPvX/UDP headers
VXLAN-GPE encapsulation of BFD control packet without IPvX/UDP headers

5. Next steps Welcome comments from the WG
Asking WG to consider adoption of the draft
Thank you