Internet Engineering Task Force (IETF)                            Z. Ali
Request for Comments: 7963                                   A. Bonfanti
Category: Informational                                       M. Hartley
ISSN: 2070-1721                                            Cisco Systems
                                                                F. Zhang
                                                     Huawei Technologies
                                                             August 2016


            RSVP-TE Extension for Additional Signal Types in
                G.709 Optical Transport Networks (OTNs)

Abstract

   RFCs 4328 and 7139 provide signaling extensions in Resource
   ReserVation Protocol - Traffic Engineering (RSVP-TE) to control the
   full set of Optical Transport Network (OTN) features.  However, these
   specifications do not cover the additional Optical channel Data Unit
   (ODU) containers defined in G.Sup43 (ODU1e, ODU3e1, and ODU3e2).
   This document defines new Signal Types for these additional
   containers.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   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).  Not all documents
   approved by the IESG are a candidate for any level of Internet
   Standard; see Section 2 of RFC 7841.

   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/rfc7963.

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Table of Contents

   1. Introduction ................................................... 3
   2. RSVP-TE Extension for Additional Signal Types .................. 3
   3. Security Considerations ........................................ 3
   4. IANA Considerations ............................................ 3
   5. References ..................................................... 4
     5.1. Normative References ....................................... 4
     5.2. Informative References ..................................... 4
   Acknowledgments ................................................... 4
   Authors' Addresses ................................................ 5

1.  Introduction

   [RFC7139] updates the portions of text related to the Optical channel
   Data Unit (ODU) described in [RFC4328] to provide extensions to
   Resource ReserVation Protocol - Traffic Engineering (RSVP-TE) to
   support control for [G.709-v3] in the OTN-TDM SENDER_TSPEC and OTN-
   TDM FLOWSPEC objects.  However, it does not specify Signal Types for
   the ODU1e, ODU3e1, and ODU3e2 containers defined in [G.Sup43].  This
   document provides RSVP-TE signaling extensions to support these
   additional Signal Types.

   These containers are non-standard data-plane frame formats (not
   defined in ITU-T Recommendations).  They are among some of the intra-
   domain approaches used in networks to transport 10GBASE-R signals in
   optical transport networks.  As a supplement, [G.Sup43] does not
   guarantee interoperability in the data plane for these containers.

2.  RSVP-TE Extension for Additional Signal Types

   [RFC7139] defines the format of Traffic Parameters in OTN-TDM
   SENDER_TSPEC and OTN-TDM FLOWSPEC objects.  These traffic parameters
   have a Signal Type field.  This document defines the Signal Types for
   ODU1e, ODU3e1, and ODU3e2, as defined in the IANA Considerations
   section.  They are allocated via the Specification Required policy
   added to the subregistry by [RFC7892].

3.  Security Considerations

   This document does not introduce any additional security issues
   beyond those identified in [RFC7139].

4.  IANA Considerations

   IANA maintains the "Generalized Multi-Protocol Label Switching
   (GMPLS) Signaling Parameters" registry that contains the "OTN Signal
   Type" subregistry.  IANA has added the following three allocations
   for ODU1e, ODU3e1, and ODU3e2 in the subregistry via the
   Specification Required policy [RFC5226]:

   Value            Type
   -----            ----
   23               ODU1e  (10Gbps Ethernet [G.Sup43])
   26               ODU3e1 (40Gbps Ethernet [G.Sup43])
   27               ODU3e2 (40Gbps Ethernet [G.Sup43])

   These Signal Types are carried in the Traffic Parameters in OTN-TDM
   SENDER_TSPEC and OTN-TDM FLOWSPEC objects [RFC7139].

5.  References

5.1.  Normative References

   [RFC4328]  Papadimitriou, D., Ed., "Generalized Multi-Protocol Label
              Switching (GMPLS) Signaling Extensions for G.709 Optical
              Transport Networks Control", RFC 4328,
              DOI 10.17487/RFC4328, January 2006,
              <http://www.rfc-editor.org/info/rfc4328>.

   [RFC7139]  Zhang, F., Ed., Zhang, G., Belotti, S., Ceccarelli, D.,
              and K. Pithewan, "GMPLS Signaling Extensions for Control
              of Evolving G.709 Optical Transport Networks", RFC 7139,
              DOI 10.17487/RFC7139, March 2014,
              <http://www.rfc-editor.org/info/rfc7139>.

   [RFC7892]  Ali, Z., Bonfanti, A., Hartley, M., and F. Zhang, "IANA
              Allocation Procedures for the GMPLS OTN Signal Type
              Registry", RFC 7892, DOI 10.17487/RFC7892, May 2016,
              <http://www.rfc-editor.org/info/rfc7892>.

5.2.  Informative References

   [G.709-v3] ITU-T, "Interfaces for the optical transport network",
              Recommendation G.709/Y.1331, June 2016.

   [G.Sup43]  ITU-T, "Transport of IEEE 10GBASE-R in optical transport
              networks (OTN)", Recommendation G.Sup43, February 2011.

   [RFC5226]  Narten, T. and H. Alvestrand, "Guidelines for Writing an
              IANA Considerations Section in RFCs", BCP 26, RFC 5226,
              DOI 10.17487/RFC5226, May 2008,
              <http://www.rfc-editor.org/info/rfc5226>.

Acknowledgments

   The authors would like to thank Dieter Beller, Lou Berger, Deborah
   Brungard, Daniele Ceccarelli, Adrian Farrel, and Sudip Shukla for
   their comments.

Authors' Addresses

   Zafar Ali
   Cisco Systems

   Email: zali@cisco.com


   Antonello Bonfanti
   Cisco Systems

   Email: abonfant@cisco.com


   Matt Hartley
   Cisco Systems

   Email: mhartley@cisco.com


   Fatai Zhang
   Huawei Technologies

   Email: zhangfatai@huawei.com