Generic UDP Encapsulation
draft-ietf-intarea-gue-09
Document | Type | Active Internet-Draft (intarea WG) | |
---|---|---|---|
Authors | Tom Herbert , Lucy Yong , Osama Zia | ||
Last updated | 2020-10-05 (latest revision 2019-10-26) | ||
Replaces | draft-ietf-nvo3-gue | ||
Stream | Internent Engineering Task Force (IETF) | ||
Intended RFC status | Proposed Standard | ||
Formats | plain text pdf htmlized (tools) htmlized bibtex | ||
Reviews | |||
Stream | WG state | Submitted to IESG for Publication | |
Document shepherd | Fred Templin | ||
Shepherd write-up | Show (last changed 2019-01-04) | ||
IESG | IESG state | AD Evaluation::Revised I-D Needed | |
Action Holders |
(None)
|
||
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Éric Vyncke | ||
Send notices to | (None) |
Internet Area WG T. Herbert Internet-Draft Quantonium Intended status: Standard track L. Yong Expires April 28, 2020 Independent O. Zia Microsoft October 26, 2019 Generic UDP Encapsulation draft-ietf-intarea-gue-09 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), its areas, and its working groups. Note that other groups may also distribute working documents as Internet- Drafts. 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." The list of current Internet-Drafts can be accessed at http://www.ietf.org/ietf/1id-abstracts.txt The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html This Internet-Draft will expire on April 28, 2020. 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 (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. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents Herbert, Yong, Zia Expires April, 2019 [Page 1] Internet Draft Generic UDP Encapsulation October 26, 2019 (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. 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. Herbert, Yong, Zia Expires April, 2019 [Page 2] Internet Draft Generic UDP Encapsulation October 26, 2019 Abstract This specification describes Generic UDP Encapsulation (GUE), which is a scheme for using UDP to encapsulate packets of different IP protocols for transport across layer 3 networks. By encapsulating packets in UDP, specialized capabilities in networking hardware for efficient handling of UDP packets can be leveraged. GUE specifies basic encapsulation methods upon which higher level constructs, such as tunnels and overlay networks for network virtualization, can be constructed. GUE is extensible by allowing optional data fields as part of the encapsulation, and is generic in that it can encapsulate packets of various IP protocols. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.1. Applicability . . . . . . . . . . . . . . . . . . . . . . . 5 1.2. Terminology and acronyms . . . . . . . . . . . . . . . . . 6 1.3. Requirements Language . . . . . . . . . . . . . . . . . . . 7 2. Base packet format . . . . . . . . . . . . . . . . . . . . . . 8 2.1. GUE variant . . . . . . . . . . . . . . . . . . . . . . . . 8 3. Variant 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.1. Header format . . . . . . . . . . . . . . . . . . . . . . . 9 3.2. Proto/ctype field . . . . . . . . . . . . . . . . . . . . . 10 3.2.1. Proto field . . . . . . . . . . . . . . . . . . . . . . 10 3.2.2. Ctype field . . . . . . . . . . . . . . . . . . . . . . 10 3.3. Flags and extension fields . . . . . . . . . . . . . . . . 12 3.3.1. Requirements . . . . . . . . . . . . . . . . . . . . . 12 3.3.2. Example GUE header with extension fields . . . . . . . 12 3.4. Surplus space . . . . . . . . . . . . . . . . . . . . . . . 13 3.5. Message types . . . . . . . . . . . . . . . . . . . . . . . 13 3.5.1. Control messages . . . . . . . . . . . . . . . . . . . 13 3.5.2. Data messages . . . . . . . . . . . . . . . . . . . . . 14Show full document text