GRE-in-UDP Encapsulation
RFC 8086
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Type |
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RFC - Proposed Standard
(March 2017; Errata)
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Last updated |
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2017-05-01
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Replaces |
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draft-yong-tsvwg-gre-in-udp-encap
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IETF
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plain text
pdf
html
bibtex
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Reviews |
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WG state
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Submitted to IESG for Publication
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Document shepherd |
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David Black
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Shepherd write-up |
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Show
(last changed 2016-09-13)
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| IESG |
IESG state |
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RFC 8086 (Proposed Standard)
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Consensus Boilerplate |
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Yes
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Telechat date |
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Responsible AD |
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Spencer Dawkins
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Send notices to |
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"David L. Black" <david.black@emc.com>
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| IANA |
IANA review state |
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Version Changed - Review Needed
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IANA action state |
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RFC-Ed-Ack
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Internet Engineering Task Force (IETF) L. Yong, Ed.
Request for Comments: 8086 Huawei Technologies
Category: Standards Track E. Crabbe
ISSN: 2070-1721 Oracle
X. Xu
Huawei Technologies
T. Herbert
Facebook
March 2017
GRE-in-UDP Encapsulation
Abstract
This document specifies a method of encapsulating network protocol
packets within GRE and UDP headers. This GRE-in-UDP encapsulation
allows the UDP source port field to be used as an entropy field.
This may be used for load-balancing of GRE traffic in transit
networks using existing Equal-Cost Multipath (ECMP) mechanisms.
There are two applicability scenarios for GRE-in-UDP with different
requirements: (1) general Internet and (2) a traffic-managed
controlled environment. The controlled environment has less
restrictive requirements than the general Internet.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on
Internet Standards is available in Section 2 of RFC 7841.
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/rfc8086.
Yong, et al. Standards Track [Page 1]
RFC 8086 GRE-in-UDP Encapsulation March 2017
Copyright Notice
Copyright (c) 2017 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. 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.
Yong, et al. Standards Track [Page 2]
RFC 8086 GRE-in-UDP Encapsulation March 2017
Table of Contents
1. Introduction ....................................................4
1.1. Terminology ................................................5
1.2. Requirements Language ......................................5
2. Applicability Statement .........................................6
2.1. GRE-in-UDP Tunnel Requirements .............................6
2.1.1. Requirements for Default GRE-in-UDP Tunnel ..........7
2.1.2. Requirements for TMCE GRE-in-UDP Tunnel .............8
3. GRE-in-UDP Encapsulation ........................................9
3.1. IP Header .................................................11
3.2. UDP Header ................................................11
3.2.1. Source Port ........................................11
3.2.2. Destination Port ...................................11
3.2.3. Checksum ...........................................12
3.2.4. Length .............................................12
3.3. GRE Header ................................................12
4. Encapsulation Procedures .......................................13
4.1. MTU and Fragmentation .....................................13
4.2. Differentiated Services and ECN Marking ...................14
5. Use of DTLS ....................................................14
6. UDP Checksum Handling ..........................................15
6.1. UDP Checksum with IPv4 ....................................15
6.2. UDP Checksum with IPv6 ....................................15
7. Middlebox Considerations .......................................18
7.1. Middlebox Considerations for Zero Checksums ...............19
8. Congestion Considerations ......................................19
9. Backward Compatibility .........................................20
10. IANA Considerations ...........................................21
11. Security Considerations .......................................21
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