Internet Engineering Task Force                      D. Hiremagalur, Ed.
Internet-Draft                                           G. Grammel, Ed.
Intended status: Standards Track                           J. Drake, Ed.
Expires: September 28, 2012                                      Juniper
                                                      G. Galimberti, Ed.
                                                                   Cisco
                                                           R. Kunze, Ed.
                                                        Deutsche Telekom
                                                          March 27, 2012


Extension to the Link Management Protocol (LMP/DWDM -rfc4209) for Dense
Wavelength Division Multiplexing (DWDM) Optical Line Systems to  manage
      black-link optical interface parameters of DWDM application
                          draft-g-698-2-lmp-00

Abstract

   This memo defines extensions to LMP(rfc4209) for managing Optical
   parameters associated with Wavelength Division Multiplexing (WDM)
   systems or characterized by the Optical Transport Network (OTN) in
   accordance with the Black-Link approach defined in ITU-T
   Recommendation G.698.2[ITU.G698.2].[ITU.G698.2]

Copyright Notice

   Copyright (c) 2011 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Status of this Memo

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   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on September 28, 2012.

Copyright Notice




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   Copyright (c) 2012 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.  Extensions to LMP-WDM Protocol  . . . . . . . . . . . . . . . . 3
   3.  BLack Link General Parameters - BL_Capability . . . . . . . . . 4
   4.  BLack Link - BL_OXC_Status  . . . . . . . . . . . . . . . . . . 6
   5.  BLack Link - BL_OLS_Status  . . . . . . . . . . . . . . . . . . 7
   6.  Security Considerations . . . . . . . . . . . . . . . . . . . . 7
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 7
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . . . 8
     8.1.  Normative References  . . . . . . . . . . . . . . . . . . . 8
     8.2.  Informative References  . . . . . . . . . . . . . . . . . . 8
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . . . 8
























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1.  Introduction

   This extension is based on "draft-galimbe-kunze-g-698-2-snmp-mib-02"
   and "draft-kunze-g-698-2-management-control-framework-02, for the
   relevant parameters specified in G.698.2 [ITU.G698.2]

   Figure 1 Extended LMP Model ( from [RFC4209] )


            +------+       +------+       +------+       +------+
            |      | ----- |      |       |      | ----- |      |
            | OXC1 | ----- | OLS1 | ===== | OLS2 | ----- | OXC2 |
            |      | ----- |      |       |      | ----- |      |
            +------+       +------+       +------+       +------+
              ^  ^             ^              ^             ^  ^
              |  |             |              |             |  |
              |  +-----LMP-----+              +-----LMP-----+  |
              |                                                |
              +----------------------LMP-----------------------+



                       Figure 1: Extended LMP Model


2.  Extensions to LMP-WDM Protocol

   This document defines extensions to [RFC4209] to allow the Black Link
   (BL) parameters of G.698.2, as described in the draft
   draft-kunze-g-698-2-management-control-framework-02 , to be exchanged
   between a router or optical switch and the optical line system to
   which it is attached.  In particular, this document defines
   additional Data Link sub-objects to be carried in the LinkSummary
   message defined in [RFC4204].  The OXC and OLS systems may be managed
   by different Network management systems and hence may not know the
   capability and status of their peer.  The intent of this draft is to
   enable the OXC and OLS systems to exchange this information.  These
   messages and their usage are defined in subsequent sections of this
   document.

       The following new messages are defined for the Black Link:
        - BL_Capability  (sub-object Type = TBA)
        - BL_OXC_Status  (sub-object Type = TBA)
        - BL_OLS_Status  (sub-object Type = TBA)







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3.  BLack Link General Parameters - BL_Capability

   These are the BL parameters as described in [G698.2].  Please refer
   to the "draft-kunze-g-698-2-management-control-framework-02." for
   more details about these parameters.  The parameters relevant to each
   system are exchanged between the OXC and OLS. 1.  Wavelength (in
   hertz) 2.  Wavelength Range - Min and Max wavelengths
   supported(Hertz) 3.  Channel Spacing (hertz) 4.  Wavelenth
   Availability bits - variable bits depending on the no of wavelengths
   available (For eg 80 bits for C-band 25GHz, allocation is in
   multiples of 1byte - 96 bits - 10bytes) 0 - wavelength is available,
   1 - used Reference - draft-ietf-ccamp-rwa-wson-encode-13.txt 5.
   Vendor Transceiver Class -- 32 bytes 6.  Single-channel application
   codes -- 32 bytes 7.  Minimum Mean Channel Output Power (0.1 dbm) 8.
   Maximum Mean Channel Output Power (0.1 dbm) 9.  Minimum Central
   Frequency (0.01 THz) 10.  Maximum Central Frequency (0.01 THz) 11.
   Maximum Spectral Excursion "0.1 GHz" 12.  Maximum Tx Dispersion OSNR
   Penalty (0.1 dbm) 13.  Minimum Mean Input Power (0.1dbm) 14.  Maximum
   Mean Input Power (0.1dbm) 15.  Minimum OSNR (0.01Thz) 16.  OSNR
   Tolerance (0.1GHz)

   Figure 2The format of the this sub-object (Type = TBA, Length = TBA)
   is as follows:




























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      0                   1                   2                   3
       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |    Type       |    Length     |  Reserved     |     Reserved  |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                      Wavelength                               |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                      Wavelength                               |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                      Min Wavelength                           |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                      Max Wavelength                           |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |  Length       |  Wavelength Availability Map                  |
      |  Wavelength   |                                               |
      |  map          |                                               |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                      Vendor Transceiver Class                 |
      |                                                               |
      |                                                               |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                      Single-channel Application Code          |
      |                                                               |
      |                                                               |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                      Minimum Mean Channel Output Power        |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                      Maximum Mean Channel Output Power        |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                      Minimum Central Frequency                |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                      Maximum Central Frequency                |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                      Maximum Spectral Excursion               |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                      Maximum Tx Dispersion OSNR Penalty       |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                      Minimum Mean Input Power                 |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                      Maximum Mean Input Power                 |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                      Minimum OSNR                             |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                      OSNR Tolerance                           |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

                          Figure 2: BL_Capability




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4.  BLack Link - BL_OXC_Status

   This message is used to convey the status of the link at the OXC to
   the OLS.  This message can be either sent when there is a change in
   the value or at predefined intervals.  These parameters will give the
   current status of the link at the OXC. 1.  Current Output Power (0.1
   dbm) 2.  Current Input Power (0.1 dbm) 3.  Threshold for the input
   power at OXC (0.1 dbm) - This is the power level above which the OLS
   will not function. 4.  Current Chromatic Dispersion (ps/nm) 5.
   Current OSNR (0.1 dbm) 6.  Maximum Tx Dispersion OSNR Penalty (0.1
   dbm) 7.  Current Output Power 8.  Status of TX - Status of the
   Transmit link at OXC 9.  Status of Rx link at OXC - Status of the
   Receive link at the OXC 10.  Admin Status 11.  Operation Status

   Figure 3 The format of the Black link sub-object (Type = TBA, Length
   = TBA) is as follows:


       0                   1                   2                   3
       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |    Type       |    Length     |     Reserved  |   (Reserved)  |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                      Current Output Power                     |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                      Current Input Power                      |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                      Threshold for the input power at OXC     |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                      Current Chromatic Dispersion             |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                      Current OSNR                             |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                      Maximum Tx Dispersion OSNR Penalty       |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                      Current Output Power                     |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |       Status of TX            |  Status of RX                 |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |       Admin Status            |  Operation Status             |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

                   Figure 3: OTN Layers for OPS and OCh








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5.  BLack Link - BL_OLS_Status

   Figure 4 The format of the Black Link/OLS Sink sub-object (Type =
   TBA, Length = TBA) is as follows:

       0                   1                   2                   3
       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |    Type       |    Length     |      Reserved |     Reserved  |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                       Wavelength                              |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |  Length       |  Wavelength Availability Map                  |
      |  Wavelength   |                                               |
      |  map          |                                               |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                  Current Input Power                          |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                  Threshold of the input power at OLS          |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                  Current Output Power                         |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |  Status of RX at OLS           |   Status of TX at OLS        |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |       Admin Status            |  Operation Status             |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

                   Figure 4: OTN Layers for OPS and OCh


6.  Security Considerations

   LMP message security uses IPsec, as described in [RFC4204].  This
   document only defines new LMP objects that are carried in existing
   LMP messages, similar to the LMP objects in [RFC:4209].  This
   document does not introduce new security considerations.


7.  IANA Considerations

   LMP [RFC4204] defines the following name spaces and the ways in which
   IANA can make assignments to these namespaces: - LMP Message Type -
   LMP Object Class - LMP Object Class type (C-Type) unique within the
   Object Class - LMP Sub-object Class type (Type) unique within the
   Object Class This memo introduces the following new assignments: LMP
   Sub-Object Class names: o under DATA_LINK Class name (as defined in
   [RFC4204]) - BL_Capability (sub-object Type = TBA) - BL_OXC_Status
   (sub-object Type = TBA) - BL_OLS_Status (sub-object Type = TBA)



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8.  References

8.1.  Normative References

   [RFC4204]  Lang, J., "Link Management Protocol (LMP)", RFC 4204,
              October 2005.

   [RFC4209]  Fredette, A. and J. Lang, "Link Management Protocol (LMP)
              for Dense Wavelength Division Multiplexing (DWDM) Optical
              Line Systems", RFC 4209, October 2005.

   [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.

8.2.  Informative References

   [I-D.kunze-g-698-2-management-control-framework]
              Kunze, R., "A framework for Management and Control of
              optical interfaces supporting G.698.2",
              draft-kunze-g-698-2-management-control-framework-00 (work
              in progress), July 2011.


Authors' Addresses

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

   Phone: +1408
   Email: dharinih@juniper.net





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   Gert Grammel (editor)
   Juniper
   1194 N Mathilda Avenue
   Sunnyvale - 94089 California
   USA

   Phone: +1408
   Email: ggrammel@juniper.net


   John E. Drake (editor)
   Juniper
   1194 N Mathilda Avenue
   HW-US,Pennsylvania
   USA

   Phone: +1408
   Email: jdrake@juniper.net


   Gabriele Galimberti (editor)
   Cisco
   Via Philips,12
   20052 - Monza
   Italy

   Phone: +390392091462
   Email: ggalimbe@cisco.com


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

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













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