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Versions: (draft-dharini-netmod-g-698-2-yang) 00 draft-dharini-dwdm-if-yang

Internet Engineering Task Force                        G.Galimberti, Ed.
Internet-Draft                                                     Cisco
Intended status: Standards Track                            R.Kunze, Ed.
Expires: April 21, 2016                                 Deutsche Telekom
                                                             K. Lam, Ed.
                                                          Alcatel-Lucent
                                                     D. Hiremagalur, Ed.
                                                       G. G.Grammel, Ed.
                                                                 Juniper
                                                             L.Fang, Ed.
                                                        G.Ratterree, Ed.
                                                               Microsoft
                                                        October 19, 2015


A YANG model to manage the optical interface parameters for an external
                      transponder in a WDM network
                  draft-dharini-netmod-dwdm-if-yang-00

Abstract

   This memo defines a Yang model that translates the SNMP mib module
   defined in draft-galikunze-ccamp-dwdm-if-snmp-mib for managing single
   channel optical interface parameters of DWDM applications.  This
   model is to support the optical parameters specified in ITU-T G.698.2
   [ITU.G698.2] and application identifiers specified in ITU-T G.874.1
   [ITU.G874.1] .  Note that G.874.1 encompasses vendor-specific codes,
   which if used would make the interface a single vendor IaDI and could
   still be managed.

   The Yang model defined in this memo can be used for Optical
   Parameters monitoring and/or configuration of the endpoints of the
   multi-vendor IaDI optical link.

Copyright Notice

   Copyright (c) 2014 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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/.



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   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 April 21, 2016.

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.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  The Internet-Standard Management Framework  . . . . . . . . .   4
   3.  Conventions . . . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  Overview  . . . . . . . . . . . . . . . . . . . . . . . . . .   4
     4.1.  Optical Parameters Description  . . . . . . . . . . . . .   5
       4.1.1.  Rs-Ss Configuration . . . . . . . . . . . . . . . . .   6
       4.1.2.  Table of Application Codes  . . . . . . . . . . . . .   7
     4.2.  Use Cases . . . . . . . . . . . . . . . . . . . . . . . .   7
     4.3.  Optical Interface for external transponder in a WDM
           network . . . . . . . . . . . . . . . . . . . . . . . . .   7
   5.  Structure of the Yang Module  . . . . . . . . . . . . . . . .   8
   6.  Yang Module . . . . . . . . . . . . . . . . . . . . . . . . .   8
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  13
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  14
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  14
   10. Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  14
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .  15
     11.1.  Normative References . . . . . . . . . . . . . . . . . .  15
     11.2.  Informative References . . . . . . . . . . . . . . . . .  17
   Appendix A.  Change Log . . . . . . . . . . . . . . . . . . . . .  18
   Appendix B.  Open Issues  . . . . . . . . . . . . . . . . . . . .  18
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  18





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1.  Introduction

   This memo defines a Yang model that translates the SNMP mib module
   defined in draft-galikunze-ccamp-dwdm-if-snmp-mib for managing single
   channel optical interface parameters of DWDM applications, using the
   approach specified in G.698.2.  This model is to support the optical
   parameters specified in ITU-T G.698.2 [ITU.G698.2], application
   identifiers specified in ITU-T G.874.1 [ITU.G874.1] and the Optical
   Power at Transmitter and Receiver side.  Note that G.874.1
   encompasses vendor-specific codes, which if used would make the
   interface a single vendor IaDI and could still be managed.`

   [Editor's note: In G.698.2 this corresponds to the optical path from
   point S to R; network media channel is also used and explained in
   draft-ietf-ccamp-flexi-grid-fwk-02]

   Management will be performed at the edges of the network media
   channel (i.e., at the transmitters and receivers attached to the S
   and R reference points respectively) for the relevant parameters
   specified in G.698.2 [ITU.G698.2], G.798 [ITU.G798], G.874
   [ITU.G874], and the performance parameters specified in G.7710/Y.1701
   [ITU-T G.7710] and G.874.1 [ITU.G874.1].

   G.698.2 [ITU.G698.2] is primarily intended for metro applications
   that include optical amplifiers.  Applications are defined in G.698.2
   [ITU.G698.2] using optical interface parameters at the single-channel
   connection points between optical transmitters and the optical
   multiplexer, as well as between optical receivers and the optical
   demultiplexer in the DWDM system.  This Recommendation uses a
   methodology which does not explicitly specify the details of the
   optical network between reference point Ss and Rs, e.g., the passive
   and active elements or details of the design.  The Recommendation
   currently includes unidirectional DWDM applications at 2.5 and 10
   Gbit/s (with 100 GHz and 50 GHz channel frequency spacing).  Work is
   still under way for 40 and 100 Gbit/s interfaces.  There is
   possibility for extensions to a lower channel frequency spacing.
   This document specifically refers to the "application code" defined
   in the G.698.2 [ITU.G698.2] and included in the Application
   Identifier defined in G.874.1 [ITU.G874.1] and G.872 [ITU.G872], plus
   a few optical parameters not included in the G.698.2 application code
   specification.

   This draft refers and supports the draft-kdkgall-ccamp-dwdm-if-mng-
   ctrl-fwk

   The building of a yang model describing the optical parameters
   defined in G.698.2 [ITU.G698.2], and reflected in G.874.1
   [ITU.G874.1], allows the different vendors and operator to retrieve,



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   provision and exchange information across the G.698.2 multi-vendor
   IaDI in a standardized way.  In addition to the parameters specified
   in ITU recommendations the Yang models support also the "vendor
   specifica application identifier", the Tx and Rx power at the Ss and
   Rs points and the channel frequency.

   The Yang Model, reporting the Optical parameters and their values,
   characterizes the features and the performances of the optical
   components and allow a reliable link design in case of multi vendor
   optical networks.

   Although RFC 3591 [RFC3591], which draft-galikunze-ccamp-DWDM-if-
   snmp-mib is extending, describes and defines the SNMP MIB of a number
   of key optical parameters, alarms and Performance Monitoring, as this
   RFC is over a decade old, it is primarily pre-OTN, and a more
   complete and up-to-date description of optical parameters and
   processes can be found in the relevant ITU-T Recommendations.  The
   same considerations can be applied to the RFC 4054 [RFC4054].

2.  The Internet-Standard Management Framework

   For a detailed overview of the documents that describe the current
   Internet-Standard Management Framework, please refer to section 7 of
   RFC 3410 [RFC3410].

   This memo specifies a Yang model for optical interfaces.

3.  Conventions

   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] In
   the description of OIDs the convention: Set (S) Get (G) and Trap (T)
   conventions will describe the action allowed by the parameter.

4.  Overview















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   Figure 1 shows a set of reference points, for single-channel
   connection between transmitters (Tx) and receivers (Rx).  Here the
   DWDM network elements include an OM and an OD (which are used as a
   pair with the opposing element), one or more optical amplifiers and
   may also include one or more OADMs.


          +-------------------------------------------------+
       Ss |              DWDM Network Elements              | Rs
   +--+ | |  | \                                       / |  |  | +--+
   Tx L1--|->|   \    +------+            +------+   /   |--|-->Rx L1
   +---+  |  |    |   |      |  +------+  |      |  |    |  |    +--+
   +---+  |  |    |   |      |  |      |  |      |  |    |  |    +--+
   Tx L2--|->| OM |-->|------|->| OADM |--|------|->| OD |--|-->Rx L2
   +---+  |  |    |   |      |  |      |  |      |  |    |  |    +--+
   +---+  |  |    |   |      |  +------+  |      |  |    |  |    +--+
   Tx L3--|->|   /    | DWDM |    |  ^    | DWDM |   \   |--|-->Rx L3
   +---+  |  | /      | Link +----|--|----+ Link |     \ |  |    +--+
          +-----------+           |  |           +----------+
                               +--+  +--+
                               |        |
                            Rs v        | Ss
                            +-----+  +-----+
                            |RxLx |  |TxLx |
                            +-----+  +-----+
   Ss = reference point at the DWDM network element tributary output
   Rs = reference point at the DWDM network element tributary input
   Lx = Lambda x
   OM = Optical Mux
   OD = Optical Demux
   OADM = Optical Add Drop Mux


   from Fig. 5.1/G.698.2

               Figure 1: External transponder in WDM netwoks

4.1.  Optical Parameters Description

   The link between the external transponders through a WDM network
   media channels are managed at the edges, i.e. at the transmitters
   (Tx) and receivers (Rx) attached to the S and R reference points
   respectively.  The set of parameters that could be managed are
   defined by the "application code" notation

   The definitions of the optical parameters are provided below to
   increase the readability of the document, where the definition is




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   ended by (R) the parameter can be retrieve with a read, when (W) it
   can be provisioned by a write, (R,W) can be either read or written.

4.1.1.  Rs-Ss Configuration

   The Rs-Ss configuration table allows configuration of Central
   Frequency, Power and Application codes as described in [ITU.G698.2]
   and G.694.1 [ITU.G694.1]
   This parameter report the current Transceiver Output power, it can be
   either a setting and measured value (G, S).

   Central frequency (see G.694.1 Table 1) (see G.694.1 Table 1):
      This parameter indicates the Central frequency value that Ss and
      Rs will be set to work (in THz).  See the details in Section 6/
      G.694.1 (G, S).

   Single-channel application codes(see G.698.2):
      This parameter indicates the transceiver application code at Ss
      and Rs as defined in [ITU.G698.2] Chapter 5.4 - this parameter can
      be called Optical Interface Identifier OII as per [draft-
      martinelli-wson-interface-class](G).

   Number of Single-channel application codes Supported
      This parameter indicates the number of Single-channel application
      codes supported by this interface (G).

   Current Laser Output power:
      This parameter report the current Transceiver Output power, it can
      be either a setting and measured value (G, S).

   Current Laser Input power:
      This parameter report the current Transceiver Input power (G).

   +---------------------------------------------+---------+-----------+
   | PARAMETERS                                  | Get/Set | Reference |
   +---------------------------------------------+---------+-----------+
   | Central frequency Value                     |   G,S   |  G.694.1  |
   |                                             |         |    S.6    |
   | Single-channel application codes            |    G    |  G.698.2  |
   |                                             |         |   S.5.3   |
   | Number of Single-channel application codes  |    G    |    N.A.   |
   | Supported                                   |         |           |
   | Current Output Power                        |   G,S   |    N.A.   |
   | Current Input Power                         |    G    |    N.A.   |
   +---------------------------------------------+---------+-----------+

                       Table 1: Rs-Ss Configuration




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4.1.2.  Table of Application Codes

   This table has a list of Application codes supported by this
   interface at point R are defined in G.698.2.

     Application code Identifier:
         The Identifier for the Application code.

     Application code Type:
      This parameter indicates the transceiver type of application code
     at Ss and Rs as defined in [ITU.G874.1], that is used by this
      interface Standard = 0, PROPRIETARY = 1
      The first 6 octets of the printable string will be the OUI
      (organizationally unique identifier) assigned to the vendor
      whose implementation generated the Application Identifier Code.

     Application code Length:
      The number of octets in the Application Code.

     Application code:
      This is the application code that is defined in G.698.2 or the
      vendor generated code which has the OUI.


4.2.  Use Cases

   The use cases are described in draft-kdkgall-ccamp-dwdm-if-mng-ctrl-
   fwk

4.3.  Optical Interface for external transponder in a WDM network

   The ietf-ext-xponder-wdm-if is an augment to the ietf-interface.  It
   allows the user to set the application code/vendor transceiver class/
   Central frequency and the output power.  The module can also be used
   to get the list of supported application codes/transceiver class and
   also the Central frequency/output power/input power of the interface.















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        module: ietf-ext-xponder-wdm-if
        augment /if:interfaces/if:interface:
            +--rw optIfOChRsSs
                  +--rw if-current-application-code
                  |  +--rw application-code-id    uint8
                  |  +--rw application-code-type  uint8
                  |  +--rw application-code-length uint8
                  |  +--rw application-code?     string
                  +--ro if-supported-application-codes
                  |  +--ro number-application-codes-supported?   uint32
                  |  +--ro application-codes-list* [application-code-id]
                  |     +--ro application-code-id   uint8
                  |     +--rw application-code-type  uint8
                  |     +--rw application-code-length uint8
                  |     +--ro application-code?    string
                  +--rw output-power?                     int32
                  +--ro input-power?                      int32
                  +--rw central-frequency?                uint32


       notifications:
      +---n opt-if-och-central-frequency-change
      |  +--ro if-name?      leafref
      |  +--ro new-central-frequency
      |     +--ro central-frequency?   uint32
      +---n opt-if-och-application-code-change
      |  +--ro if-name?              leafref
      |  +--ro new-application-code
      |     +--ro application-code-id?   uint8
      |     +--rw application-code-type  uint8
      |     +--rw application-code-length uint8
      |     +--ro application-code?     string



5.  Structure of the Yang Module

   ietf-ext-xponder-wdm-if is a top level model for the support of this
   feature.

6.  Yang Module

   The ietf-ext-xponder-wdm-if is defined as an extension to ietf
   interfaces.


   <CODE BEGINS> file "ietf-ext-xponder-wdm-if.yang"




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   module ietf-ext-xponder-wdm-if {
        namespace "urn:ietf:params:xml:ns:yang:ietf-ext-xponder-wdm-if";
        prefix ietf-ext-xponder-wdm-if;

        import ietf-interfaces {
          prefix if;
        }

        organization
          "IETF NETMOD (NETCONF Data Modelling Language)
          Working Group";

        contact
          "WG Web:   <http://tools.ietf.org/wg/netmod/>
           WG List:  <mailto:netmod@ietf.org>

           WG Chair: Thomas Nadeau
                     <mailto:tnadeau@lucidvision.com>

           WG Chair: Juergen Schoenwaelder
                     <mailto:j.schoenwaelder@jacobs-university.de>

           Editor:   Dharini Hiremagalur
                     <mailto:dharinih@juniper.net>";

        description
          "This module contains a collection of YANG definitions for
           configuring Optical interfaces.

           Copyright (c) 2013 IETF Trust and the persons identified
           as authors of the code.  All rights reserved.

           Redistribution and use in source and binary forms, with or
           without modification, is permitted pursuant to, and
           subject to the license terms contained in, the Simplified
           BSD License set forth in Section 4.c of the IETF Trust's
           Legal Provisions Relating to IETF Documents
           (http://trustee.ietf.org/license-info).";

       revision "2015-06-24" {
              description
                 "Revision 4.0";

              reference
                 " draft-dharini-netmod-dwdm-if-yang 3.0";
       }
       revision "2015-02-24" {
              description



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                 "Revision 3.0";

              reference
                 " draft-dharini-netmod-dwdm-if-yang 3.0";
       }
       revision "2014-11-10" {
              description
                 "Revision 2.0";
              reference
                 " ";
       }
       revision "2014-10-14" {
              description
                 "Revision 1.0";
               reference
                 " ";
       }
       revision "2014-05-10" {
              description
                  "Initial revision.";
              reference
                  "RFC XXXX: A YANG Data Model for Optical
                   Management of an Interface for an external
                   transponder in a WDM netwrok";
       }





         grouping opt-if-och-application-code  {
                description "Application code entity.";
                leaf application-code-id {
                   type uint8 {
                         range "1..255";
                   }
                   description
                         "Id for the Application code";
                }
                leaf application-code-type {
                   type uint8 {
                         range "0..1";
                }
                  description
                         "Type for the Application code
                           0 - Standard, 1 - Proprietory
                           When the Type is Proprietory, then the
                           first 6 octets of the application-code



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                           will be the OUI (organizationally unique
                           identifier)";

                }
                leaf application-code-length {
                   type uint8 {
                         range "1..255";
                   }
                   description
                         "Number of octets in the Application code";

                }
                leaf application-code {
                   type string {
                         length "1..255";
                   }
                   description "This parameter indicates the
                        transceiver application code at Ss and Rs as
                        defined in [ITU.G698.2] Chapter 5.3, that
                        is/should be used by this interface.
                        The optIfOChApplicationsCodeList has all the
                        application codes supported by this
                        interface.";

                }
         }


         grouping opt-if-och-application-code-list {
           description "List of Application codes group.";
           leaf number-application-codes-supported {
               type uint32;
               description "Number of Application codes
                            supported by this interface";
            }
           list application-code-list {
               key "application-code-id";
               description "List of the application codes";
               uses opt-if-och-application-code;
           }
         }


        grouping opt-if-och-power {
           description "Interface optical Power";
           leaf output-power {
               type int32;
               units ".01dbm";



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               description "The output power for this interface in
                             .01 dBm.";
           }

           leaf input-power {
                type int32;
                units ".01dbm";
                config false;
                description "The current input power of this
                      interface";
           }
        }

         grouping opt-if-och-central-frequency {
           description "Interface Central Frequency";
             leaf  central-frequency {
               type uint32;
               description "This parameter indicate This parameter
                       indicates the frequency of this interface ";

              }
        }

         notification opt-if-och-central-frequency-change {
            description "A change of Central Frequency has been
                         detected.";
            leaf "if-name" {
                type leafref {
                    path "/if:interfaces/if:interface/if:name";
                }
                description "Interface name";
            }
            container opt-if-och-central-frequency {
                   description "The new Central Frequency of the
                                interface";
                   uses opt-if-och-central-frequency;
            }
         }

         notification opt-if-och-application-code-change {
            description "A change of Application code has been
                         detected.";
            leaf "if-name" {
                type leafref {
                    path "/if:interfaces/if:interface/if:name";
                }
                description "Interface name";
            }



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            container new-application-code {
               description "The new application code for the
                   interface";
               uses opt-if-och-application-code;
            }
         }



         augment "/if:interfaces/if:interface" {
           description "Parameters for an optical interface";
           container optIfOChRsSs {
              description "RsSs path configuration for an interface";
              container if-current-application-code {
                   description "Current Application code of the
                                interface";
                   uses opt-if-och-application-code;
               }

               container if-supported-application-codes {
                   config false;
                   description "Supported Application codes of
                                the interface";
                   uses opt-if-och-application-code-list;
               }

               uses opt-if-och-power;

               uses opt-if-och-central-frequency;

            }
         }
      }

   <CODE ENDS>


7.  Security Considerations

   The YANG module defined in this memo is designed to be accessed via
   the NETCONF protocol [RFC6241]. he lowest NETCONF layer is the secure
   transport layer and the mandatory-to-implement secure transport is
   SSH [RFC6242].  The NETCONF access control model [RFC6536] provides
   the means to restrict access for particular NETCONF users to a pre-
   configured subset of all available NETCONF protocol operation and
   content.





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8.  IANA Considerations

   This document registers a URI in the IETF XML registry [RFC3688].
   Following the format in [RFC3688], the following registration is
   requested to be made:

   URI: urn:ietf:params:xml:ns:yang:ietf-interfaces:ietf-ext-xponder-
   wdm-if

   Registrant Contact: The IESG.

   XML: N/A, the requested URI is an XML namespace.

   This document registers a YANG module in the YANG Module Names
   registry [RFC6020].

   This document registers a YANG module in the YANG Module Names
   registry [RFC6020].

   prefix: ietf-ext-xponder-wdm-if reference: RFC XXXX

9.  Acknowledgements

   Gert Grammel is partly funded by European Union Seventh Framework
   Programme under grant agreement 318514 CONTENT.

10.  Contributors
























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               Dean Bogdanovic
                 Juniper Networks
                 Westford
                 U.S.A.
                 email deanb@juniper.net

               Bernd Zeuner
                 Deutsche Telekom
                 Darmstadt
                 Germany
                 email B.Zeuner@telekom.de

               Arnold Mattheus
                 Deutsche Telekom
                 Darmstadt
                 Germany
                 email a.mattheus@telekom.de

               Manuel Paul
                 Deutsche Telekom
                 Berlin
                 Germany
                 email Manuel.Paul@telekom.de

               Walid Wakim
                 Cisco
                 9501 Technology Blvd
                 ROSEMONT, ILLINOIS 60018
                 UNITED STATES
                 email wwakim@cisco.com


11.  References

11.1.  Normative References

   [RFC2863]  McCloghrie, K. and F. Kastenholz, "The Interfaces Group
              MIB", RFC 2863, DOI 10.17487/RFC2863, June 2000,
              <http://www.rfc-editor.org/info/rfc2863>.

   [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>.







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   [RFC2578]  McCloghrie, K., Ed., Perkins, D., Ed., and J.
              Schoenwaelder, Ed., "Structure of Management Information
              Version 2 (SMIv2)", STD 58, RFC 2578,
              DOI 10.17487/RFC2578, April 1999,
              <http://www.rfc-editor.org/info/rfc2578>.

   [RFC2579]  McCloghrie, K., Ed., Perkins, D., Ed., and J.
              Schoenwaelder, Ed., "Textual Conventions for SMIv2",
              STD 58, RFC 2579, DOI 10.17487/RFC2579, April 1999,
              <http://www.rfc-editor.org/info/rfc2579>.

   [RFC2580]  McCloghrie, K., Ed., Perkins, D., Ed., and J.
              Schoenwaelder, Ed., "Conformance Statements for SMIv2",
              STD 58, RFC 2580, DOI 10.17487/RFC2580, April 1999,
              <http://www.rfc-editor.org/info/rfc2580>.

   [RFC3591]  Lam, H-K., Stewart, M., and A. Huynh, "Definitions of
              Managed Objects for the Optical Interface Type", RFC 3591,
              DOI 10.17487/RFC3591, September 2003,
              <http://www.rfc-editor.org/info/rfc3591>.

   [RFC6205]  Otani, T., Ed. and D. Li, Ed., "Generalized Labels for
              Lambda-Switch-Capable (LSC) Label Switching Routers",
              RFC 6205, DOI 10.17487/RFC6205, March 2011,
              <http://www.rfc-editor.org/info/rfc6205>.

   [ITU.G698.2]
              International Telecommunications Union, "Amplified
              multichannel dense wavelength division multiplexing
              applications with single channel optical interfaces",
              ITU-T Recommendation G.698.2, November 2009.

   [ITU.G709]
              International Telecommunications Union, "Interface for the
              Optical Transport Network (OTN)", ITU-T Recommendation
              G.709, March 2003.

   [ITU.G872]
              International Telecommunications Union, "Architecture of
              optical transport networks", ITU-T Recommendation G.872,
              November 2001.

   [ITU.G798]
              International Telecommunications Union, "Characteristics
              of optical transport network hierarchy equipment
              functional blocks", ITU-T Recommendation G.798, October
              2010.




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   [ITU.G874]
              International Telecommunications Union, "Management
              aspects of optical transport network elements",
              ITU-T Recommendation G.874, July 2010.

   [ITU.G874.1]
              International Telecommunications Union, "Optical transport
              network (OTN): Protocol-neutral management information
              model for the network element view", ITU-T Recommendation
              G.874.1, January 2002.

   [ITU.G959.1]
              International Telecommunications Union, "Optical transport
              network physical layer interfaces", ITU-T Recommendation
              G.959.1, November 2009.

   [ITU.G826]
              International Telecommunications Union, "End-to-end error
              performance parameters and objectives for international,
              constant bit-rate digital paths and connections",
              ITU-T Recommendation G.826, November 2009.

   [ITU.G8201]
              International Telecommunications Union, "Error performance
              parameters and objectives for multi-operator international
              paths within the Optical Transport Network (OTN)",
              ITU-T Recommendation G.8201, April 2011.

   [ITU.G694.1]
              International Telecommunications Union, "Spectral grids
              for WDM applications: DWDM frequency grid",
              ITU-T Recommendation G.694.1, June 2002.

   [ITU.G7710]
              International Telecommunications Union, "Common equipment
              management function requirements", ITU-T Recommendation
              G.7710, May 2008.

11.2.  Informative References

   [RFC3410]  Case, J., Mundy, R., Partain, D., and B. Stewart,
              "Introduction and Applicability Statements for Internet-
              Standard Management Framework", RFC 3410,
              DOI 10.17487/RFC3410, December 2002,
              <http://www.rfc-editor.org/info/rfc3410>.






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   [RFC2629]  Rose, M., "Writing I-Ds and RFCs using XML", RFC 2629,
              DOI 10.17487/RFC2629, June 1999,
              <http://www.rfc-editor.org/info/rfc2629>.

   [RFC4181]  Heard, C., Ed., "Guidelines for Authors and Reviewers of
              MIB Documents", BCP 111, RFC 4181, DOI 10.17487/RFC4181,
              September 2005, <http://www.rfc-editor.org/info/rfc4181>.

   [I-D.kdkgall-ccamp-dwdm-if-mng-ctrl-fwk]
              Kunze, R., Grammel, G., Beller, D., and G. Galimberti, "A
              framework for Management and Control of G.698.2 optical
              interface parameters", draft-kdkgall-ccamp-dwdm-if-mng-
              ctrl-fwk-00 (work in progress), October 2015.

   [RFC4054]  Strand, J., Ed. and A. Chiu, Ed., "Impairments and Other
              Constraints on Optical Layer Routing", RFC 4054,
              DOI 10.17487/RFC4054, May 2005,
              <http://www.rfc-editor.org/info/rfc4054>.

Appendix A.  Change Log

   This optional section should be removed before the internet draft is
   submitted to the IESG for publication as an RFC.

   Note to RFC Editor: please remove this appendix before publication as
   an RFC.

Appendix B.  Open Issues

   Note to RFC Editor: please remove this appendix before publication as
   an RFC.

Authors' Addresses

   Gabriele Galimberti (editor)
   Cisco
   Via Santa Maria Molgora, 48 c
   20871 - Vimercate
   Italy

   Phone: +390392091462
   Email: ggalimbe@cisco.com









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   Ruediger Kunze (editor)
   Deutsche Telekom
   Dddd, xx
   Berlin
   Germany

   Phone: +49xxxxxxxxxx
   Email: RKunze@telekom.de


   Kam Lam (editor)
   Alcatel-Lucent
   USA

   Phone: +1 732 331 3476
   Email: kam.lam@alcatel-lucent.com


   Dharini Hiremagalur (editor)
   Juniper
   1194 N Mathilda Avenue
   Sunnyvale - 94089 California
   USA

   Email: dharinih@juniper.net


   Gert Grammel (editor)
   Juniper
   Oskar-Schlemmer Str. 15
   80807 Muenchen
   Germany

   Phone: +49 1725186386
   Email: ggrammel@juniper.net


   Luyuan Fang (editor)
   Microsoft
   5600 148th Ave NE
   Redmond, WA 98502
   USA

   Email: lufang@microsoft.com







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   Gary Ratterree (editor)
   Microsoft
   5600 148th Ave NE
   Redmond, WA 98502
   USA

   Email: gratt@microsoft.com












































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