3a- VxLAN Encapsulation 8Bytes Vxlan header ( total: 50Bytes encap )

!!! VxLAN over L2 MPLS service: 72 Bytes!!!

QFX5k : UDP destination port is set to port 4789 by definition

VXLAN Header:  This is an 8-byte field that has:

- Flags (8 bits): where the I flag MUST be set to 1 for a valid

VXLAN Network ID (VNI). The other 7 bits (designated "R") are

reserved fields and MUST be set to zero on transmission and

ignored on receipt.

- VXLAN Segment ID/VXLAN Network Identifier (VNI): this is a

24-bit value used to designate the individual VXLAN overlay

network on which the communicating VMs are situated. VMs in

different VXLAN overlay networks cannot communicate with each

other. 16 million VXLAN segments ( 2^24 -1 = 16777215 )

- Reserved fields (24 bits and 8 bits): MUST be set to zero on

transmission and ignored on receipt.