IPv6 Support for Generic Routing Encapsulation (GRE)
RFC 7676
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RFC - Proposed Standard
(October 2015; No errata)
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Last updated |
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2018-12-20
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Replaces |
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draft-pignataro-intarea-gre-ipv6
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Stream |
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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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Carlos Bernardos
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Shepherd write-up |
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Show
(last changed 2015-06-22)
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| IESG |
IESG state |
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RFC 7676 (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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Brian Haberman
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Send notices to |
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(None)
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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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No IANA Actions
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Internet Engineering Task Force (IETF) C. Pignataro
Request for Comments: 7676 Cisco Systems
Category: Standards Track R. Bonica
ISSN: 2070-1721 Juniper Networks
S. Krishnan
Ericsson
October 2015
IPv6 Support for Generic Routing Encapsulation (GRE)
Abstract
Generic Routing Encapsulation (GRE) can be used to carry any network-
layer payload protocol over any network-layer delivery protocol.
Currently, GRE procedures are specified for IPv4, used as either the
payload or delivery protocol. However, GRE procedures are not
specified for IPv6.
This document specifies GRE procedures for IPv6, used as either the
payload or delivery protocol.
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 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/rfc7676.
Pignataro, et al. Standards Track [Page 1]
RFC 7676 GRE IPv6 October 2015
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. 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
1.1. Requirements Language . . . . . . . . . . . . . . . . . . 3
1.2. Terminology . . . . . . . . . . . . . . . . . . . . . . . 3
2. GRE Header Fields . . . . . . . . . . . . . . . . . . . . . . 4
2.1. Checksum Present . . . . . . . . . . . . . . . . . . . . 4
3. IPv6 as GRE Payload . . . . . . . . . . . . . . . . . . . . . 5
3.1. GRE Protocol Type Considerations . . . . . . . . . . . . 5
3.2. MTU Considerations . . . . . . . . . . . . . . . . . . . 5
3.3. Fragmentation Considerations . . . . . . . . . . . . . . 5
4. IPv6 as GRE Delivery Protocol . . . . . . . . . . . . . . . . 6
4.1. Next Header Considerations . . . . . . . . . . . . . . . 6
4.2. Checksum Considerations . . . . . . . . . . . . . . . . . 6
4.3. MTU Considerations . . . . . . . . . . . . . . . . . . . 8
5. Security Considerations . . . . . . . . . . . . . . . . . . . 8
6. References . . . . . . . . . . . . . . . . . . . . . . . . . 8
6.1. Normative References . . . . . . . . . . . . . . . . . . 8
6.2. Informative References . . . . . . . . . . . . . . . . . 9
Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . 10
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 11
Pignataro, et al. Standards Track [Page 2]
RFC 7676 GRE IPv6 October 2015
1. Introduction
Generic Routing Encapsulation (GRE) [RFC2784] [RFC2890] can be used
to carry any network-layer payload protocol over any network-layer
delivery protocol. Currently, GRE procedures are specified for IPv4
[RFC791], used as either the payload or delivery protocol. However,
GRE procedures are not specified for IPv6 [RFC2460].
This document specifies GRE procedures for IPv6, used as either the
payload or delivery protocol. Like RFC 2784, this document describes
how GRE has been implemented by several vendors.
1.1. 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].
1.2. Terminology
The following terms are used in this document:
o GRE delivery header: An IPv4 or IPv6 header whose source address
represents the GRE ingress node and whose destination address
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