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Versions: (draft-morton-ippm-owamp-registry) 00 01 02 03 RFC 7718

Network Working Group                                          A. Morton
Internet-Draft                                                 AT&T Labs
Updates: 4656 (if approved)                           September 11, 2015
Intended status: Standards Track
Expires: March 14, 2016


     Registries for the One-Way Active Measurement Protocol - OWAMP
                   draft-ietf-ippm-owamp-registry-03

Abstract

   This memo describes the registries for OWAMP - the One-Way Active
   Measurement Protocol.  The registries allow assignment of MODE bit
   positions and OWAMP Command numbers.  The memo also requests that
   IANA establish the registries for new features, called the OWAMP-
   Modes registry and the OWAMP Control Command Number registry.  This
   memo updates RFC 4656.

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].

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 March 14, 2016.

Copyright Notice

   Copyright (c) 2015 IETF Trust and the persons identified as the
   document authors.  All rights reserved.





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   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
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   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Purpose and Scope . . . . . . . . . . . . . . . . . . . . . .   3
   3.  IANA Considerations for OWAMP Control Registries  . . . . . .   3
     3.1.  Control Command Number Registry . . . . . . . . . . . . .   3
       3.1.1.  Registry Specification  . . . . . . . . . . . . . . .   3
       3.1.2.  Registry Management . . . . . . . . . . . . . . . . .   3
       3.1.3.  Experimental Numbers  . . . . . . . . . . . . . . . .   3
       3.1.4.  OWAMP-Control Command Numbers Initial Contents  . . .   3
     3.2.  OWAMP-Modes . . . . . . . . . . . . . . . . . . . . . . .   4
       3.2.1.  Registry Specification  . . . . . . . . . . . . . . .   4
       3.2.2.  Registry Management . . . . . . . . . . . . . . . . .   4
       3.2.3.  Experimental Numbers  . . . . . . . . . . . . . . . .   4
       3.2.4.  OWAMP-Modes Initial Contents  . . . . . . . . . . . .   5
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   6
   5.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   6
   6.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   6
     6.1.  Normative References  . . . . . . . . . . . . . . . . . .   6
     6.2.  Informative References  . . . . . . . . . . . . . . . . .   7
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .   7

1.  Introduction

   The One-way Active Measurement Protocol, OWAMP [RFC4656] was prepared
   to support measurements of metrics specified by the IP Performance
   Metrics (IPPM) working group in the IETF.  The Two-Way Active
   Measurement Protocol, TWAMP [RFC5357] is an extension of OWAMP.  The
   TWAMP specification gathered wide review as it approached completion,
   and the by-products were several recommendations for new features in
   TWAMP.  As a result, a registry of new features was established for
   TWAMP.  However, there were no new features proposed for OWAMP until
   recently [I-D.ietf-ippm-ipsec].

   This memo establishes the needed registries for OWAMP, and updates
   [RFC4656].





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2.  Purpose and Scope

   The purpose and scope of this memo is to describe and request the
   establishment of registries for future OWAMP [RFC4656] extensions.
   IANA already administers the "Two-way Active Measurement Protocol
   (TWAMP) Parameters", and this request follows a similar form (with
   one exception identified below).

   This memo also provides the initial contents for the OWAMP
   registries.

3.  IANA Considerations for OWAMP Control Registries

   OWAMP-Control protocol coordinates the measurement capability.  All
   OWAMP-Control messages follow specifications defined in section 3 of
   [RFC4656].

3.1.  Control Command Number Registry

   IANA is requested to create an OWAMP-Control Command Number registry.

   OWAMP-Control Commands follow specifications defined in section 3.4
   of [RFC4656].

3.1.1.  Registry Specification

   OWAMP-Control Command Numbers are specified in the first octet of
   OWAMP-Control-Client command messages consistent with section 3 of
   [RFC4656].  There are a maximum of 256 command numbers.

3.1.2.  Registry Management

   Because the "OWAMP-Control Command Numbers" registry can contain only
   256 values, and because OWAMP is an IETF protocol, these registries
   MUST be updated only by "IETF Review" as specified in [RFC5226] (an
   RFC that documents registry use and is approved by the IESG).

3.1.3.  Experimental Numbers

   One experimental value is currently assigned in the Command Numbers
   Registry, as indicated in the initial contents below.

3.1.4.  OWAMP-Control Command Numbers Initial Contents

   OWAMP-Control Commands follows the procedure defined in section 3.5
   of [RFC4656] (and in the remainder of section 3).





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   The complete set of OWAMP-Control Command Numbers are as follows
   (including two reserved values):

      OWAMP-Control Command Numbers Registry

      Value   Description             Semantics     Reference
                                      Definition
   ==========================================================
       0      Reserved
       1      Request-Session         Section 3.5   RFC 4656
       2      Start-Sessions          Section 3.7   RFC 4656
       3      Stop-Sessions           Section 3.8   RFC 4656
       4      Fetch-Sessions          Section 3.9   RFC 4656
       5-253  Unassigned
       254    Experimentation         Section 3.1.4 This Memo
       255    Reserved


   where "This Memo" is the published version of draft-ietf-ippm-owamp-
   registry

3.2.  OWAMP-Modes

   IANA is requested to create an OWAMP-Modes registry.

3.2.1.  Registry Specification

   OWAMP-Modes are specified in OWAMP Server Greeting messages and Set-
   up Response messages consistent with section 3.1 of [RFC4656].  Modes
   are currently indicated by setting single bits in the 32-bit Modes
   Field.  However, more complex encoding may be used in the future.

3.2.2.  Registry Management

   Because the "OWAMP-Modes" are based on only 32 bit positions with
   each position conveying a unique feature, and because OWAMP is an
   IETF protocol, these registries MUST be updated only by "IETF Review"
   as specified in [RFC5226] (an RFC that documents registry use and is
   approved by the IESG).  IANA SHOULD allocate monotonically increasing
   bit positions when requested.

3.2.3.  Experimental Numbers

   No experimental bit positions are currently assigned in the Modes
   Registry, as indicated in the initial contents below.






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3.2.4.  OWAMP-Modes Initial Contents

   OWAMP-Control connection establishment follows the procedure defined
   in section 3.1 of [RFC4656].

   In the OWAMP-Modes registry, assignments are straightforward on the
   basis of bit positions, and there are no references to values - this
   is a difference from the comparable TWAMP registry (and a topic for
   improvement in the TWAMP-Modes registry which is reconciled in
   [I-D.ietf-ippm-ipsec]).

   An Extension of the OWAMP-Modes is proposed in [I-D.ietf-ippm-ipsec].
   With this extension, the complete set of OWAMP Mode bit positions are
   as follows (including one reserved bit position):

   OWAMP-Modes Registry

   Bit                            Semantics
   Pos.   Description             Definition    Reference
   =====================================================
   0      Unauthenticated         Section 3.1   RFC4656
   1      Authenticated           Section 3.1   RFC4656
   2      Encrypted               Section 3.1   RFC4656
   3      Reserved                Section 3.2.4 This Memo
   ------------------------------------------------------
   4      IKEv2-derived Shared    Section 3.2.4 This Memo
          Secret Key              and Section 5 RFC-to-be
   ------------------------------------------------------
   5-31   Unassigned


   (where RFC-to-be is the published version of draft-ietf-ippm-ipsec,
   and where "This Memo" is draft-ietf-ippm-owamp-registry )

   In the original OWAMP Modes field, setting bit position 0, 1 or 2
   indicated the security mode of the Control protocol, and the Test
   protocol inherited the same mode (see section 4 of [RFC4656]).

   The value of the Modes Field sent by the Server in the Server-
   Greeting message is the bit-wise OR of the modes (bit positions) that
   it is willing to support during this session.  Thus, the five least
   significant bits of the Modes 32-bit Field are used.  When no other
   features are activated, the 27 most significant bits MUST be zero.  A
   Control-Client conforming to [RFC4656] MAY ignore the values in the
   29 most significant bits of the Modes Field, or it MAY support
   features that are communicated in other bit positions, such as the
   IKEv2-derived Shared Secret Key extension [I-D.ietf-ippm-ipsec].




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   OWAMP and TWAMP registries for Modes may grow to contain different
   features and functions due to the inherent differences in one-way and
   two-way measurement configurations and the metrics they measure.  No
   attempt will be made to coordinate them unnecessarily, except the
   Reserved bit position 3 above.  This is available for assignment if a
   mixed security mode similar to[RFC5618] is defined for OWAMP, and
   would allow alignment with the comparable TWAMP feature.

4.  Security Considerations

   As this memo simply requests the creation of OWAMP registries, it
   presents no new security or privacy issues for the Internet.

   The security considerations that apply to any active measurement of
   live networks are relevant here as well.  See [RFC4656] and
   [RFC5357].

   Privacy considerations for measurement systems, particularly when
   Internet users participate in the tests in some way, are described in
   [I-D.ietf-lmap-framework].

5.  Acknowledgements

   The author would like to thank Kostas Pentikousis, Nalini Elkins,
   Mike Ackermann, and Greg Mirsky for insightful reviews and comments.
   We thought Spencer Dawkins caught the last of the small errors in his
   AD review, but Nevil Brownlee found a few more during OPS-DIR review.
   Roni Even found our use of "IETF Consensus" was out of date with
   [RFC5226].  Michelle Cotton helped to clarify the IANA
   considerations.

6.  References

6.1.  Normative References

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119,
              DOI 10.17487/RFC2119, March 1997,
              <http://www.rfc-editor.org/info/rfc2119>.

   [RFC4656]  Shalunov, S., Teitelbaum, B., Karp, A., Boote, J., and M.
              Zekauskas, "A One-way Active Measurement Protocol
              (OWAMP)", RFC 4656, DOI 10.17487/RFC4656, September 2006,
              <http://www.rfc-editor.org/info/rfc4656>.







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   [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>.

   [RFC5357]  Hedayat, K., Krzanowski, R., Morton, A., Yum, K., and J.
              Babiarz, "A Two-Way Active Measurement Protocol (TWAMP)",
              RFC 5357, DOI 10.17487/RFC5357, October 2008,
              <http://www.rfc-editor.org/info/rfc5357>.

6.2.  Informative References

   [I-D.ietf-ippm-ipsec]
              Pentikousis, K., Zhang, E., and Y. Cui, "IKEv2-derived
              Shared Secret Key for O/TWAMP", draft-ietf-ippm-ipsec-11
              (work in progress), August 2015.

   [I-D.ietf-lmap-framework]
              Eardley, P., Morton, A., Bagnulo, M., Burbridge, T.,
              Aitken, P., and A. Akhter, "A framework for Large-Scale
              Measurement of Broadband Performance (LMAP)", draft-ietf-
              lmap-framework-14 (work in progress), April 2015.

   [RFC5618]  Morton, A. and K. Hedayat, "Mixed Security Mode for the
              Two-Way Active Measurement Protocol (TWAMP)", RFC 5618,
              DOI 10.17487/RFC5618, August 2009,
              <http://www.rfc-editor.org/info/rfc5618>.

Author's Address

   Al Morton
   AT&T Labs
   200 Laurel Avenue South
   Middletown,, NJ  07748
   USA

   Phone: +1 732 420 1571
   Fax:   +1 732 368 1192
   Email: acmorton@att.com
   URI:   http://home.comcast.net/~acmacm/











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