Generic UDP Encapsulation
draft-ietf-intarea-gue-09
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Active Internet-Draft (intarea WG)
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2020-03-23
(latest revision 2019-10-26)
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draft-ietf-nvo3-gue
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IETF
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Intended RFC status |
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Proposed Standard
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Submitted to IESG for Publication
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Fred Templin
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(last changed 2019-01-04)
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AD Evaluation
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Responsible AD |
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Éric Vyncke
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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
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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
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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
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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 . . . . . . . . . . . . . . . . . . . . . 14
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