BGP Tunnel Encapsulation Attribute for UDP
draft-xu-softwire-encaps-udp-00

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Document Type Active Internet-Draft (individual)
Authors Xiaohu Xu  , Zhenbin Li  , Nischal Sheth  , Yiu Lee  , Fan Yongbing 
Last updated 2013-02-12
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Network Working Group                                             X. Xu 
Internet Draft                                                    Z. Li 
Category: Standard Track                                         Huawei 
 
                                                               N. Sheth 
                                                               Contrail 
                                                                        
                                                                 Y. Lee 
                                                                Comcast 
                                                                       
                                                                 Y. Fan 
                                                          China Telecom 
                                                                       
                                                                       
                                                                              
Expires: August 2013                                  February 12, 2013 
                                                                                
                                      
                BGP Tunnel Encapsulation Attribute for UDP  
                                      
                      draft-xu-softwire-encaps-udp-00 

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), its areas, and its working groups. Note that 
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Internet-Draft    Tunnel Encapsulation Attribute for UDP  February 2013 
 
   This Internet-Draft will expire on August 12, 2013. 

Copyright Notice 

   Copyright (c) 2013 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. 

Conventions used in this document 

   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]. 

Table of Contents 

    
   1. Introduction ................................................ 3 
   2. Terminology ................................................. 3 
   3. BGP Tunnel Type Code for UDP ................................ 3 
   4. Security Considerations ..................................... 3 
   5. IANA Considerations ......................................... 3 
   6. Acknowledgements ............................................ 3 
   7. References .................................................. 4 
      7.1. Normative References ................................... 4 
      7.2. Informative References ................................. 4 
   Authors' Addresses ............................................. 4 

 
 
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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 at least the following two 
   application cases: IP-in-UDP encapsulation [IP-IN-UDP] and MPLS-in-
   UDP encapsulation [MPLS-IN-UDP]. 

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. 

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. Acknowledgements 

   Thanks to.  

 
 
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7. References 

   7.1. Normative References 

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

   7.2. Informative References 

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

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

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

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

   [MPLS-in-UDP] Xu, X., Sheth, N., Yong, L., Pignataro, C., Fan, Y and 
             Z. Li, "Encapsulating MPLS in UDP", draft-ietf-mpls-in-
             udp-00.txt (work in progress), January 2013. 

   [IP-in-UDP] Xu, X., Pignataro, C., Towsley, M., Lee, Y and Y. Fan,  
             "Encapsulating IP in UDP", draft-xu-softwire-ip-in-udp-
             00.txt (work in progress), December 2012. 

Authors' Addresses 

   Xiaohu Xu 
   Huawei Technologies, 
   Beijing, China 
   Phone: +86-10-60610041 
   Email: xuxiaohu@huawei.com 
    
    
   Zhenbin Li 
   Huawei Technologies, 
   Beijing, China 
   Phone: +86-10-60613676 
   Email: lizhenbin@huawei.com 
    

 
 
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   Nischal Sheth 
   Nischal Sheth
   Contrail Systems 
   Email: nsheth@contrailsystems.com

   Yongbing Fan 
   China Telecom 
   Guangzhou, China. 
   Phone: +86 20 38639121 
   Email: fanyb@gsta.com

   Yiu Lee
   Comcast
   One Comcast Center
   Philadelphia, PA 1903
   USA
   Email: Yiu_Lee@Cable.Comcast.com

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