Framework for GMPLS and PCE Control of Wavelength Switched Optical Networks WSON

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Framework for GMPLS and PCE Control of Wavelength
Switched Optical Networks(WSON)
draft-ietf-ccamp-rwa-wson-framework-04.txt
Greg Bernstein gregb_at_grotto-networking.com Grott
o Networking Young Lee ylee_at_huawei.com Huawei
Wataru Imajuku imajuku.wataru_at_lab.ntt.co.jp NTT
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Authors/Contributors

• Snigdho Bardalai (Fujitsu)
• Greg Bernstein (Grotto Networking)
• Diego Caviglia (Ericsson)
• Wataru Imajuku (NTT)
• Daniel King (Old Dog Consulting)
• Young Lee (Huawei)
• Dan Li (Huawei)
• Itaru Nishioka (NEC Corp.)
• Lyndon Ong (Ciena)
• Pierre Peloso (Alcatel-Lucent)
• Jonathan Sadler (Tellabs)
• Dirk Schroetter (Cisco)

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WSON RWA Framework Scope

• Control plane models for key wavelength switched
  optical network subsystems and processes. The
  subsystems include
• wavelength division multiplexed links, tunable
  laser transmitters,
• reconfigurable optical add/drop multiplexers
  (ROADM) and wavelength converters.
• The RWA process is reviewed and the information
  requirements are presented, along with
  alternative implementation architectures.
• Limitations focuses on topological elements and
  path selection constraints that are common across
  different WSON environments and does not address
  optical impairments, nor does it address
  potential incompatibilities between some types of
  optical signals and some types of network
  elements and links

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Relation to Signal Compatibility Work

• For the purposes of this document we assume that
  all signals used in a WSON are compatible with
  all network elements and links within the WSON.
  This can arise in practice for a number of
  reasons including
• only one class of signal is used throughout the
  network
• only "relatively" transparent network elements
  are utilized in the WSON.
• different signal types are restricted to specific
  subnetworks and conversion takes place at all
  subnetwork boundaries (optical islands)

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Updates

• From 02
• Edited abstract and intro to differentiate
  between this document and impairment and
  compatibility drafts.
• Removed discussion of fiber impairments
• Removed most discussion of optical signal types
  and compatibility including regenerators.
• Editorial enhancements and corrections
• From 03
• Added 4-degree bidirectional ROADM example to
  section 3.3.1 per WG mailing list request.

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Next Steps

• Last Call