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
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This Internet-Draft will expire on August 12, 2013.
Copyright Notice
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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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