Generic Protocol Extension for VXLAN (VXLAN-GPE)
draft-ietf-nvo3-vxlan-gpe-10
Network Working Group F. Maino, Ed.
Internet-Draft Cisco Systems
Intended status: Informational L. Kreeger, Ed.
Expires: January 14, 2021 Arrcus
U. Elzur, Ed.
Intel
July 13, 2020
Generic Protocol Extension for VXLAN (VXLAN-GPE)
draft-ietf-nvo3-vxlan-gpe-10
Abstract
This document describes extending Virtual eXtensible Local Area
Network (VXLAN), via changes to the VXLAN header, with four new
capabilities: support for multi-protocol encapsulation, support for
operations, administration and maintenance (OAM) signaling, support
for ingress-replicated BUM Traffic (i.e. Broadcast, Unknown unicast,
or Multicast), and explicit versioning. New protocol capabilities
can be introduced via shim headers.
Requirements Language
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in [RFC2119].
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
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time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on January 14, 2021.
Maino, Ed., et al. Expires January 14, 2021 [Page 1]
Internet-Draft VXLAN-GPE July 2020
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. VXLAN Without Protocol Extension . . . . . . . . . . . . . . 3
3. Generic Protocol Extension for VXLAN (VXLAN-GPE) . . . . . . 4
3.1. VXLAN-GPE Header . . . . . . . . . . . . . . . . . . . . 4
3.2. Multi Protocol Support . . . . . . . . . . . . . . . . . 5
3.3. Replicated BUM Traffic . . . . . . . . . . . . . . . . . 7
3.4. OAM Support . . . . . . . . . . . . . . . . . . . . . . . 7
3.5. Version Bits . . . . . . . . . . . . . . . . . . . . . . 8
4. Outer Encapsulations . . . . . . . . . . . . . . . . . . . . 8
4.1. Inner VLAN Tag Handling . . . . . . . . . . . . . . . . . 11
4.2. Fragmentation Considerations . . . . . . . . . . . . . . 12
5. Implementation and Deployment Considerations . . . . . . . . 12
5.1. Applicability Statement . . . . . . . . . . . . . . . . . 12
5.2. Congestion Control Functionality . . . . . . . . . . . . 13
5.3. UDP Checksum . . . . . . . . . . . . . . . . . . . . . . 13
5.3.1. UDP Zero Checksum Handling with IPv6 . . . . . . . . 13
6. Backward Compatibility . . . . . . . . . . . . . . . . . . . 15
6.1. VXLAN VTEP to VXLAN-GPE VTEP . . . . . . . . . . . . . . 15
6.2. VXLAN-GPE VTEP to VXLAN VTEP . . . . . . . . . . . . . . 15
6.3. VXLAN-GPE UDP Ports . . . . . . . . . . . . . . . . . . . 15
6.4. VXLAN-GPE and Encapsulated IP Header Fields . . . . . . . 15
7. VXLAN-GPE Examples . . . . . . . . . . . . . . . . . . . . . 16
8. Security Considerations . . . . . . . . . . . . . . . . . . . 17
9. Contributors . . . . . . . . . . . . . . . . . . . . . . . . 17
10. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 18
11. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 19
11.1. UDP Port . . . . . . . . . . . . . . . . . . . . . . . . 19
11.2. VXLAN-GPE Next Protocol . . . . . . . . . . . . . . . . 19
11.3. VXLAN-GPE Flag and Reserved Bits . . . . . . . . . . . . 19
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