Generic Protocol Extension for VXLAN
draft-ietf-nvo3-vxlan-gpe-05
Network Working Group F. Maino, Ed.
Internet-Draft Cisco Systems
Intended status: Informational L. Kreeger, Ed.
Expires: May 3, 2018
U. Elzur, Ed.
Intel
October 30, 2017
Generic Protocol Extension for VXLAN
draft-ietf-nvo3-vxlan-gpe-05
Abstract
This draft describes extending Virtual eXtensible Local Area Network
(VXLAN), via changes to the VXLAN header, with three new
capabilities: support for multi-protocol encapsulation, operations,
administration and management (OAM) signaling and explicit
versioning.
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.
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This Internet-Draft will expire on May 3, 2018.
Copyright Notice
Copyright (c) 2017 IETF Trust and the persons identified as the
document authors. All rights reserved.
Maino, Ed., et al. Expires May 3, 2018 [Page 1]
Internet-Draft VXLAN-GPE October 2017
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
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 . . . . . . . . . . . . . . . . . 6
3.4. OAM Support . . . . . . . . . . . . . . . . . . . . . . . 6
3.5. Version Bits . . . . . . . . . . . . . . . . . . . . . . 7
4. Outer Encapsulations . . . . . . . . . . . . . . . . . . . . 7
4.1. Inner VLAN Tag Handling . . . . . . . . . . . . . . . . . 11
4.2. Fragmentation Considerations . . . . . . . . . . . . . . 11
5. Backward Compatibility . . . . . . . . . . . . . . . . . . . 11
5.1. VXLAN VTEP to VXLAN GPE VTEP . . . . . . . . . . . . . . 11
5.2. VXLAN GPE VTEP to VXLAN VTEP . . . . . . . . . . . . . . 11
5.3. VXLAN GPE UDP Ports . . . . . . . . . . . . . . . . . . . 12
5.4. VXLAN GPE and Encapsulated IP Header Fields . . . . . . . 12
6. VXLAN GPE Examples . . . . . . . . . . . . . . . . . . . . . 12
7. Security Considerations . . . . . . . . . . . . . . . . . . . 13
8. Contributors . . . . . . . . . . . . . . . . . . . . . . . . 13
9. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 14
10. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 14
10.1. UDP Port . . . . . . . . . . . . . . . . . . . . . . . . 14
10.2. VXLAN GPE Next Protocol . . . . . . . . . . . . . . . . 15
10.3. VXLAN GPE Flag and Reserved Bits . . . . . . . . . . . . 15
11. References . . . . . . . . . . . . . . . . . . . . . . . . . 16
11.1. Normative References . . . . . . . . . . . . . . . . . . 16
11.2. Informative References . . . . . . . . . . . . . . . . . 17
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 17
1. Introduction
Virtual eXtensible Local Area Network VXLAN [RFC7348] defines an
encapsulation format that encapsulates Ethernet frames in an outer
UDP/IP transport. As data centers evolve, the need to carry other
protocols encapsulated in an IP packet is required, as well as the
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