Generic Protocol Extension for VXLAN
draft-ietf-nvo3-vxlan-gpe-09
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2019-12-05
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Network Working Group F. Maino, Ed.
Internet-Draft Cisco Systems
Intended status: Informational L. Kreeger, Ed.
Expires: June 7, 2020 Arrcus
U. Elzur, Ed.
Intel
December 5, 2019
Generic Protocol Extension for VXLAN
draft-ietf-nvo3-vxlan-gpe-09
Abstract
This draft 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.
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
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
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 June 7, 2020.
Maino, Ed., et al. Expires June 7, 2020 [Page 1]
Internet-Draft VXLAN-GPE December 2019
Copyright Notice
Copyright (c) 2019 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(https://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
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 . . . . . . . . . . . . . . . . . . . . . . 7
4. Outer Encapsulations . . . . . . . . . . . . . . . . . . . . 7
4.1. Inner VLAN Tag Handling . . . . . . . . . . . . . . . . . 11
4.2. Fragmentation Considerations . . . . . . . . . . . . . . 11
5. Implementation and Deployment Considerations . . . . . . . . 12
5.1. Applicability Statement . . . . . . . . . . . . . . . . . 12
5.2. Congestion Control Functionality . . . . . . . . . . . . 12
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
12. References . . . . . . . . . . . . . . . . . . . . . . . . . 20
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