Encapsulating MPLS in UDP
RFC 7510
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RFC - Proposed Standard
(April 2015; Errata)
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Last updated |
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2015-10-14
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Replaces |
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draft-xu-mpls-in-udp
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IETF
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plain text
pdf
html
bibtex
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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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Loa Andersson
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Shepherd write-up |
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Show
(last changed 2014-12-11)
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| IESG |
IESG state |
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RFC 7510 (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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Deborah Brungard
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(None)
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| IANA |
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Version Changed - Review Needed
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RFC-Ed-Ack
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Internet Engineering Task Force (IETF) X. Xu
Request for Comments: 7510 Huawei Technologies
Category: Standards Track N. Sheth
ISSN: 2070-1721 Juniper Networks
L. Yong
Huawei USA
R. Callon
Juniper Networks
D. Black
EMC Corporation
April 2015
Encapsulating MPLS in UDP
Abstract
This document specifies an IP-based encapsulation for MPLS, called
MPLS-in-UDP for situations where UDP (User Datagram Protocol)
encapsulation is preferred to direct use of MPLS, e.g., to enable
UDP-based ECMP (Equal-Cost Multipath) or link aggregation. The MPLS-
in-UDP encapsulation technology must only be deployed within a single
network (with a single network operator) or networks of an adjacent
set of cooperating network operators where traffic is managed to
avoid congestion, rather than over the Internet where congestion
control is required. Usage restrictions apply to MPLS-in-UDP usage
for traffic that is not congestion controlled and to UDP zero
checksum usage with IPv6.
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/rfc7510.
Xu, et al. Standards Track [Page 1]
RFC 7510 Encapsulating MPLS in UDP April 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. Existing Encapsulations . . . . . . . . . . . . . . . . . 3
1.2. Motivations for MPLS-in-UDP Encapsulation . . . . . . . . 4
1.3. Applicability Statements . . . . . . . . . . . . . . . . 4
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Encapsulation in UDP . . . . . . . . . . . . . . . . . . . . 5
3.1. UDP Checksum Usage with IPv6 . . . . . . . . . . . . . . 6
3.2. Middlebox Considerations for IPv6 UDP Zero Checksums . . 10
4. Processing Procedures . . . . . . . . . . . . . . . . . . . . 10
5. Congestion Considerations . . . . . . . . . . . . . . . . . . 11
6. Security Considerations . . . . . . . . . . . . . . . . . . . 13
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 15
8. References . . . . . . . . . . . . . . . . . . . . . . . . . 15
8.1. Normative References . . . . . . . . . . . . . . . . . . 15
8.2. Informative References . . . . . . . . . . . . . . . . . 16
Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . 17
Contributors . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 19
Xu, et al. Standards Track [Page 2]
RFC 7510 Encapsulating MPLS in UDP April 2015
1. Introduction
This document specifies an IP-based encapsulation for MPLS, i.e.,
MPLS-in-UDP, which is applicable in some circumstances where IP-based
encapsulation for MPLS is required and further fine-grained load
balancing of MPLS packets over IP networks over Equal-Cost Multipath
(ECMP) and/or Link Aggregation Groups (LAGs) is required as well.
There are already IP-based encapsulations for MPLS that allow for
fine-grained load balancing by using some special field in the
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