Network Virtualization over Layer 3 (NVO3) Encapsulation Considerations
RFC 9638

Received changes through RFC Editor sync (created document RFC 9638, created became rfc relationship between draft-ietf-nvo3-encap and RFC 9638, set title to 'Network Virtualization over Layer 3 (NVO3) Encapsulation Considerations', set abstract to 'The IETF Network Virtualization Overlays (NVO3) Working Group developed considerations for a common encapsulation that addresses various network virtualization overlay technical concerns. This document provides a record, for the benefit of the IETF community, of the considerations arrived at by the NVO3 Working Group starting from the output of the NVO3 encapsulation Design Team. These considerations may be helpful with future deliberations by working groups over the choice of encapsulation formats.

There are implications of having different encapsulations in real environments consisting of both software and hardware implementations and within and spanning multiple data centers. For example, Operations, Administration, and Maintenance (OAM) functions such as path MTU discovery become challenging with multiple encapsulations along the data path.

Based on these considerations, the NVO3 Working Group determined that Generic Network Virtualization Encapsulation (Geneve) with a few modifications is the common encapsulation. This document provides more details, particularly in Section 7.', set pages to 22, set standardization level to Informational, added RFC published event at 2024-09-25)