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OSPFTE extension to support GMPLS for Flex Grid
draft-dhillon-ccamp-super-channel-ospfte-ext-06

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Last updated: 2013-10-16
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Network Working Group                                  Iftekhar Hussain
                                                              Rajan Rao
                                                             Marco Sosa
                                                               Infinera
                                                        Abinder Dhillon
Internet Draft                                                  Fujitsu
Intended status: Standard Track                        October 16, 2013
Expires: Apr 16, 2014

              OSPFTE extension to support GMPLS for Flex Grid
            draft-dhillon-ccamp-super-channel-ospfte-ext-06.txt

Abstract

   This document specifies the extension to TELINK LSA of OSPF routing
   protocol [RFC4203] [3] in support of GMPLS [1] for flex-grid
   networks [2].

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), its areas, and its working groups.  Note that
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   This Internet-Draft will expire on Apr 16, 2014.

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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
   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...................................................2
   2. Terminology....................................................3
   3. Interface Switching Capability Descriptor......................3
      3.1. Switch Capability Specific Information ....................5
      3.2. BW sub TLV: Bit Map format................................5
         3.2.1. Meaning of sub TLV fields............................5
      3.3. BW sub TLV: List and Rage format..........................7
         3.3.1. Meaning of sub TLV fields............................7
      3.4. BW advertisement procedure................................8
   4. Examples.......................................................8
      4.1. Example: BW advertisement without any service present.....8
      4.2. Example: How to use advertized Bandwidth..................9
   5. Security Considerations.......................................10
   6. IANA Considerations...........................................10
   7. References....................................................10
      7.1. Normative References.....................................10
      7.2. Informative References...................................10
   8. Acknowledgments...............................................11

      1. Introduction

   To enable scaling of existing transport systems to ultra-high data
   rates of 1 Tbps and beyond, next generation systems providing super-
   channel[2] switching capability are currently being developed. To
   allow efficient allocation of optical spectral bandwidth for such
   high bit rate systems, International Telecommunication Union
   Telecommunication Standardization Sector (ITU-T) is extending the

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   G.694.1 grid standard (termed ''Fixed-Grid'') to include flexible grid
   (termed ''Flex-Grid'') support [10].

   This document defines OSPF-TE extensions in support of flex-grid
   networks.

   Figure-1 shows a network capable of switching in Flexible-Grid[10].
   The physical media/Fiber is modeled as a TE-Link to advertise
   spectrum (bandwidth) availability. This information is used during

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