VXLAN frame formate for NSX

[krunal7558]

What is position of REPLICATE_LOCALLY bit in VXLAN header? According to RFC 7348 all flags in VXLAN header should be set to 0.

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.

Just want to know what is position of the required bit for Unicast and Hybrid mode set up.

[dcoghlan80]

The NSXvSphereDesignGuidev2.1 explains the REPLICATE_LOCALLy bit (Pages 29 & 30 - Unicast Mode section)

But basically the bit is set on the unicast VXLAN header to tell the UTEP that it will need to replicate the frame locally to the other VTEPs in the segment.

[admin]

Hello,

Have a look at my blog post, where I discussed VXLAN control plane modes (including replication) and how they work:

NSX for vSphere: VXLAN Control Plane modes explained | Telecom Occasionally

Hope this helps.