Link Management Protocol Extensions for Grid Property Negotiation
draft-li-ccamp-grid-property-lmp-01

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Last updated 2012-03-07
Replaced by draft-ietf-ccamp-grid-property-lmp
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Network Working Group                                              Y. Li
Internet-Draft                                                       ZTE
Intended status: Standards Track                             R. Casellas
Expires: September 9, 2012                                          CTTC
                                                                 Y. Wang
                                                                    CATR
                                                           March 8, 2012

   Link Management Protocol Extensions for Grid Property Negotiation
                  draft-li-ccamp-grid-property-lmp-01

Abstract

   The recent updated version of ITU-T [G.694.1] has introduced the
   flexible-grid DWDM technique, which provides a new tool that
   operators can implement to provide a higher degree of network
   optimization than is possible with fixed-grid systems.  This document
   describes the extensions to the Link Management Protocol (LMP) to
   negotiate link grid property between the adjacent DWDM nodes before
   the link is brought up.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on September 9, 2012.

Copyright Notice

   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

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   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
     1.1.  Conventions Used in This Document  . . . . . . . . . . . .  3
   2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  3
   3.  Problem Statement  . . . . . . . . . . . . . . . . . . . . . .  4
     3.1.  Flexi-fixed Grid Nodes Interworking  . . . . . . . . . . .  4
     3.2.  Flexible-Grid Capability Negotiation . . . . . . . . . . .  5
     3.3.  Problem Summary  . . . . . . . . . . . . . . . . . . . . .  6
   4.  LMP extensions . . . . . . . . . . . . . . . . . . . . . . . .  6
     4.1.  Grid Property Subobject  . . . . . . . . . . . . . . . . .  6
   5.  Messages Exchange Procedure  . . . . . . . . . . . . . . . . .  8
     5.1.  Flexi-fixed Grid Nodes Messages Exchange . . . . . . . . .  8
     5.2.  Flexible Nodes Messages Exchange . . . . . . . . . . . . .  9
   6.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 10
   7.  Security Considerations  . . . . . . . . . . . . . . . . . . . 10
   8.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 10
     8.1.  Normative references . . . . . . . . . . . . . . . . . . . 10
     8.2.  Informative References . . . . . . . . . . . . . . . . . . 11
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 11

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1.  Introduction

   The recent updated version of ITU-T [G.694.1] has introduced the
   flexible-grid DWDM technique, which provides a new tool that
   operators can implement to provide a higher degree of network
   optimization than is possible with fixed-grid systems.  A flexible-
   grid network supports allocating an arbitrary spectral slot to a
   channel.  Mixed bitrate transmission systems can allocate their
   channels with different spectral bandwidths/slot widths so that they
   can be optimized for the bandwidth requirements of the particular
   bitrate and modulation scheme of the individual channels.  This
   technique is regarded to be a promising way to improve the spectrum
   utilization efficiency and fundamentally reduce the cost of the core
   network.

   During the practical deployment procedure, fixed-grid optical nodes
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