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Encapsulating MPLS in UDP (RFC7510)

IP.com Disclosure Number: IPCOM000241226D
Original Publication Date: 2015-Apr-01
Included in the Prior Art Database: 2015-Apr-07
Document File: 38 page(s) / 43K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

X. Xu: AUTHOR [+5]


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 encapsulation header as an entropy field. However, MPLS-in-UDP can be advantageous since networks have used the UDP port number fields as a basis for load-balancing solutions for some time.

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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


   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     ...