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Liaison statement
SG15 OTNT Standardisation Work Plan

State Posted
Submitted Date 2007-04-28
From Group ccamp
From Contact Adrian Farrel
To Group ITU-T-SG-15-Q3
To Contacts Greg Jones <>
Cc Stephen Trowbridge <>
Hiroshi Ohta <>
Scott Bradner <>
Dave Ward <>
Ross Callon <>
Loa Andersson <>
JP Vasseur <>
CCAMP Working Group <>
PCE Working Group <>
Response Contact Adrian Farrel <>
Deborah Brungard <>
Technical Contact Adrian Farrel <>
Deborah Brungard <>
Purpose For information
Attachments (None)
The CCAMP Working Group of the IETF thanks you for sharing
your OTNT Work Plan and for soliciting our comments.

We have the following two points that you may want to use
to update your document.

1. Table 5-1

  This table lists standardisation activities for carrier-
  class Ethernet in various SDOs.

  The CCAMP working group has the responsibility within the
  IETF for developing common control plane and measurement
  plane solutions for use within transport networks, and
  layer 2 (for example, Ethernet) is within scope for our
  work. The working group has been discussing the
  application of GMPLS protocols to the dynamic control of
  Ethernet networks with the following results:

  a. draft-ietf-ccamp-ethernet-traffic-parameters-01.txt

    This Internet-Draft documents extensions to the RSVP-TE
    signaling protocol to express Ethernet traffic
    parameters so that GMPLS can be used to set up Ethernet
    LSPs and to request Ethernet services at a GMPLS UNI.
    The draft can be found at

  b. GMPLS Ethernet Label Switching (GELS)

    The GELS effort is intended to develop a single set of
    protocol extensions that are applicable to the
    establishment of LSPs through an Ethernet network.

    Currently there are several proposals of what type of
    Ethernet network may benefit from this type of control
    plane, and the appropriateness of each proposed data
    plane will be verified with the IEEE before CCAMP
    attempts to apply a control plane.

    Currently there are several individual submission
    Internet-Drafts that have started to lay out the
    requirements and potential solutions for the GMPLS
    protocol extensions.

2. Table 7-1

  Table 7-1 provides a long list of related OTNT industry
  standards and specifications.

  a. GMPLS and Optical-Related RFCs

    We would like to suggest some additions to this list
    from the IETF as follows:

    RFC 3471 : Generalized Multi-Protocol Label Switching
               (GMPLS) Signaling Functional Description

    RFC 3473 : Generalized Multi-Protocol Label Switching
               (GMPLS)Signaling Resource ReserVation
               Protocol-Traffic Engineering (RSVP-TE)

    RFC 4652 : Evaluation of Existing Routing Protocols
               against Automatic Switched Optical Network
               (ASON) Routing Requirements

    RFC 4726 : A Framework for Inter-Domain Multiprotocol
               Label Switching Traffic Engineering

    RFC 4736 : Reoptimization of Multiprotocol Label
               Switching (MPLS) Traffic Engineering (TE)
               Loosely Routed Label Switch Path (LSP)

    RFC 4783 : GMPLS - Communication of Alarm Information

    RFC 4801 : Definitions of Textual Conventions for
               Generalized Multiprotocol Label Switching
               (GMPLS) Management

    RFC 4802 : Generalized Multiprotocol Label Switching
               (GMPLS) Traffic Engineering Management
               Information Base

    RFC 4803 : Generalized Multiprotocol Label Switching
               (GMPLS)Label Switching Router (LSR)
               Management Information Base

    RFC 4874 : Exclude Routes - Extension to Resource
               ReserVation Protocol-Traffic Engineering

    The latest list of CCAMP RFCs can be found at the CCAMP
    Charter page,

    A further short list of RFCs have been assigned numbers
    and will be published in the next few days:

    RFC 4872 : RSVP-TE Extensions in Support of End-to-End
               Generalized Multi-Protocol Label Switching
               (GMPLS) Recovery

    RFC 4873 : GMPLS Segment Recovery

  b. GMPLS and Optical-Related Internet-Drafts

    We welcome your listing of Internet-Drafts for related
    work. We make the following observations:

    i.  All Internet-Drafts should be identified as "work
        in progress". This request is made, as standard, by
        the IETF in the following boilerplate text at the
        head of every Internet-Draft...

          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."

    ii. The following Internet-Drafts in Table 7-1 have
        been replaced with RFCs as listed above:


    iii. Additional Internet-Drafts

        You may wish to list the following CCAMP Internet-
        Drafts as relevant to your work:

          Inter domain Multiprotocol Label Switching (MPLS)
          and Generalized MPLS (GMPLS) Traffic Engineering
          - RSVP-TE extensions

          Label Switched Path Stitching with Generalized
          Multiprotocol Label Switching Traffic Engineering
          (GMPLS TE)

          Generalized MPLS (GMPLS) RSVP-TE Signaling
          Extensions in support of Calls

          Procedures for Dynamically Signaled Hierarchical
          Label Switched Paths

          Framework for MPLS-TE to GMPLS migration

          MEF Ethernet Traffic Parameters

          OSPFv2 Routing Protocols Extensions for ASON

          Graceful Shutdown in GMPLS Traffic Engineering

          Operating Virtual Concatenation (VCAT) and the
          Link Capacity Adjustment Scheme (LCAS) with
          Generalized Multi-Protocol Label Switching

          Traffic Engineering Database Management
          Information Base in support of GMPLS

          Requirements for the Conversion Between Permanent
          Connections and Switched Connections in a
          Generalized Multiprotocol Label Switching (GMPLS)

          Interworking Requirements to Support operation of
          MPLS-TE over GMPLS networks

          Analysis of Inter-domain Label Switched Path
          (LSP) Recovery

        The latest list of CCAMP Internet-Drafts can be
        found at the CCAMP Charter page,

    iv. Expired Internet-Drafts

        The following Internet-Drafts listed in table 7-1
        have expired and are not being pursued.


  c. Path Computation-related RFCs and Internet-Drafts

    In the light of G.7715.2, you may also be interested in
    including the Path Computation Element (PCE) RFCs and
    Internet-Drafts within table 7-1 as follows:

    RFC 4655 : A Path Computation Element (PCE) Based

    RFC 4657 : Path Computation Element (PCE) Communication
               Protocol Generic Requirements

    RFC 4674 : Requirements for Path Computation Element
               (PCE) Discovery

      Path Computation Element (PCE) communication Protocol

      PCC-PCE Communication Requirements for Inter-Layer
      Traffic Engineering

      PCE Communication Protocol (PCECP) Specific
      Requirements for Inter-Area Multi Protocol Label
      Switching (MPLS) and Generalized MPLS (GMPLS) Traffic

      Framework for PCE-Based Inter-Layer MPLS and GMPLS
      Traffic Engineering

      Policy-Enabled Path Computation Framework

      Inter-AS Requirements for the Path Computation
      Element Communication Protocol (PCECP)

      A Backward Recursive PCE-based Computation (BRPC)
      procedure to compute shortest inter-domain Traffic
      Engineering Label Switched Paths

      OSPF protocol extensions for Path Computation Element
      (PCE) Discovery

      IS-IS protocol extensions for Path Computation
      Element (PCE) Discovery

      Definitions of Managed Objects for Path Computation
      Element Discovery

      Definitions of Textual Conventions for Path
      Computation Element

      Extensions to the Path Computation Element
      Communication Protocol (PCEP) for Route Exclusions

    The latest list of PCE RFCs and Internet-Drafts can be
    found at the PCE Charter page,

  d. Obsoleted specification

    Please note that RFC 4327 has been obsoleted by RFC
    4631 and should no longer be listed in its own right.

  e. MPLS and Packet-related RFCs and Internet-Drafts

    We suggest that in the light of the recent work within
    the ITU-T related to packet transport networks
    including, but not limited to, pseudowires and T-MPLS,
    you may wish to contact Mr. Loa Andersson who is IETF
    liaison to the ITU-T on MPLS to see what new and
    relevant MPLS RFCs and Internet-Drafts have been

Best regards,
Adrian Farrel and Deborah Brungard
IETF CCAMP Working Group Co-Chairs