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NVGRE: Network Virtualization Using Generic Routing Encapsulation (RFC7637)

IP.com Disclosure Number: IPCOM000244967D
Original Publication Date: 2015-Sep-01
Included in the Prior Art Database: 2016-Feb-04
Document File: 34 page(s) / 40K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

P. Garg: AUTHOR [+4]

Abstract

Conventional data center network designs cater to largely static workloads and cause fragmentation of network and server capacity [6] [7]. There are several issues that limit dynamic allocation and consolidation of capacity. Layer 2 networks use the Rapid Spanning Tree Protocol (RSTP), which is designed to eliminate loops by blocking redundant paths. These eliminated paths translate to wasted capacity and a highly oversubscribed network. There are alternative approaches such as the Transparent Interconnection of Lots of Links (TRILL) that address this problem [13].

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Independent Submission                                      P. Garg, Ed. Request for Comments: 7637                                  Y. Wang, Ed. Category: Informational                                        Microsoft ISSN: 2070-1721                                           September 2015

    NVGRE: Network Virtualization Using Generic Routing Encapsulation

Abstract

   This document describes the usage of the Generic Routing    Encapsulation (GRE) header for Network Virtualization (NVGRE) in    multi-tenant data centers.  Network Virtualization decouples virtual    networks and addresses from physical network infrastructure,    providing isolation and concurrency between multiple virtual networks    on the same physical network infrastructure.  This document also    introduces a Network Virtualization framework to illustrate the use    cases, but the focus is on specifying the data-plane aspect of NVGRE.

Status of This Memo

   This document is not an Internet Standards Track specification; it is    published for informational purposes.

   This is a contribution to the RFC Series, independently of any other    RFC stream.  The RFC Editor has chosen to publish this document at    its discretion and makes no statement about its value for    implementation or deployment.  Documents approved for publication by    the RFC Editor are not a candidate for any level of Internet    Standard; see Section 2 of RFC 5741.

   Information about the current status of this document, any errata,    and how to provide feedback on it may be obtained at    http://www.rfc-editor.org/info/rfc7637.

Copyright Notice

   Copyright (c) 2015 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    (http://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.

Garg & Wang                   Informational                     [Page 1]
 RFC 7637                          NVGRE                   September 2015

 Table of Contents

   1. Introduction ....................................................2

      1.1. Terminology ................................................4

   2. Conventions Used in This Document ...............................4

   3. Network Virtualization Using GRE (NVGRE) ........................4

      3.1. NVGRE Endpoint .............................................5

      3.2. NVGRE Frame Format .......................................