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Versions: 00 01 02                                                      
Network Working Group                                              X. Xu
Internet-Draft                                       Huawei Technologies
Intended status: Standards Track                                N. Sheth
Expires: August 16, 2015                                Juniper Networks
                                                                R. Asati
                                                           Cisco Systems
                                                       February 12, 2015


               BGP Tunnel Encapsulation Attribute for UDP
                    draft-xu-softwire-encaps-udp-02

Abstract

   This document specifies a new Border Gateway Protocol (BGP) Tunnel
   Type of User Datagram Protocol (UDP) tunnels.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
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   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on August 16, 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
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   described in the Simplified BSD License.



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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   2
   3.  BGP Tunnel Type Code for UDP  . . . . . . . . . . . . . . . .   2
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   3
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   3
   6.  Contributors  . . . . . . . . . . . . . . . . . . . . . . . .   3
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   3
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   4
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .   4
     8.2.  Informative References  . . . . . . . . . . . . . . . . .   4
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   4

1.  Introduction

   [RFC5512] specifies a method by which Border Gateway Protocol (BGP)
   speakers can signal tunnel encapsulation information to each other
   and accordingly it defines support for Generic Routing Encapsulation
   (GRE) [RFC2784], Layer Two Tunneling Protocol - Version 3 (L2TPv3)
   [RFC3931] and IP in IP [RFC2003] tunnel types.  This document builds
   on [RFC5512] and defines support for the User Datagram Protocol (UDP)
   tunnel type which is applicable to the MPLS-in-UDP encapsulation
   [I-D.ietf-mpls-in-udp].

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 RFC 2119 [RFC2119].

2.  Terminology

   This memo makes use of the terms defined in [RFC5512].

3.  BGP Tunnel Type Code for UDP

   To use either the Encapsulation Subsequent Address Family Identifier
   (SAFI) or the BGP Encapsulation Extended Community defined in
   [RFC5512] to signal the UDP tunnel type information across BGP
   speakers, a new Tunnel Type code (TBD) indicating the UDP tunnel type
   needs to be assigned by IANA.  This document does not specify any UDP
   tunnel specific sub-TLV.  Furthermore, the BGP Encapsulation Network
   Layer Reachability Information (NLRI) Format is not modified by this
   document.





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4.  Security Considerations

   The security considerations mentioned in [RFC5512] is applicable to
   this new BGP Tunnel Type code for UDP tunnels as well.  No new
   security risk is introduced by this new Tunnel Type code for UDP
   tunnels.

5.  IANA Considerations

   A new BGP Tunnel Type code indicating the UDP tunnel type needs to be
   assigned by IANA.

6.  Contributors

   Note that contributors are listed in alphabetical order according to
   their last names.

      Yongbing Fan

      China Telecom

      Email: fanyb@gsta.com



      Yiu Lee

      Comcast

      Email: Yiu_Lee@Cable.Comcast.com



      Zhenbin Li

      Huawei Technologies

      Email: lizhenbin@huawei.com



7.  Acknowledgements

   Thanks to







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8.  References

8.1.  Normative References

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119, March 1997.

   [RFC5512]  Mohapatra, P. and E. Rosen, "The BGP Encapsulation
              Subsequent Address Family Identifier (SAFI) and the BGP
              Tunnel Encapsulation Attribute", RFC 5512, April 2009.

8.2.  Informative References

   [I-D.ietf-mpls-in-udp]
              Xu, X., Sheth, N., Yong, L., Callon, R., and D. Black,
              "Encapsulating MPLS in UDP", draft-ietf-mpls-in-udp-11
              (work in progress), January 2015.

   [RFC2003]  Perkins, C., "IP Encapsulation within IP", RFC 2003,
              October 1996.

   [RFC2784]  Farinacci, D., Li, T., Hanks, S., Meyer, D., and P.
              Traina, "Generic Routing Encapsulation (GRE)", RFC 2784,
              March 2000.

   [RFC3931]  Lau, J., Townsley, M., and I. Goyret, "Layer Two Tunneling
              Protocol - Version 3 (L2TPv3)", RFC 3931, March 2005.

Authors' Addresses

   Xiaohu Xu
   Huawei Technologies
   No.156 Beiqing Rd
   Beijing  100095
   CHINA

   Phone: +86-10-60610041
   Email: xuxiaohu@huawei.com


   Nischal Sheth
   Juniper Networks
   1194 N. Mathilda Ave
   Sunnyvale, CA  94089
   USA

   Email: nsheth@juniper.net




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Internet-Draft BGP Tunnel Encapsulation Attribute for UDP  February 2015


   Rajiv Asati
   Cisco Systems
   7200 Kit Creek Road
   Research Triangle Park,, NC  27709
   USA

   Email: rajiva@cisco.com












































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