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 working documents as Internet-Drafts. The list of current Internet- 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 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. Xu, et al. Expires August 16, 2015 [Page 1] Internet-Draft BGP Tunnel Encapsulation Attribute for UDP February 2015 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. Xu, et al. Expires August 16, 2015 [Page 2] Internet-Draft BGP Tunnel Encapsulation Attribute for UDP February 2015 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 Xu, et al. Expires August 16, 2015 [Page 3] Internet-Draft BGP Tunnel Encapsulation Attribute for UDP February 2015 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 Xu, et al. Expires August 16, 2015 [Page 4] 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 Xu, et al. Expires August 16, 2015 [Page 5]