Routing and Wavelength Assignment Information Encoding for Wavelength Switched Optical Networks

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Routing and Wavelength Assignment Information
Encoding for Wavelength Switched Optical Networks
draft-ietf-ccamp-rwa-wson-encode-04.txt
Greg Bernstein gregb_at_grotto-networking.com Grott
o Networking Young Lee ylee_at_huawei.com Huawei
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Authors/Contributors

• Greg Bernstein (Grotto Networking)
• Diego Caviglia (Ericsson)
• Ander Gavler (Acreo AB)
• Jianrui (Rebecca) Han (Huawei)
• Young Lee (Huawei)
• Dan Li (Huawei)
• Wataru Imajuku (NTT)
• Jonas Martensson (Acreo AB)
• Itaru Nishioka (NEC Corp.)

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Encoding RWA Info in WSON

• Scope is the WSON specific aspects of the RWA
  WSON Framework and Info Model drafts. (scope
  reduction)
• This document provides efficient,
  protocol-agnostic encodings for the WSON specific
  information elements. It is intended that
  protocol-specific documents will reference this
  memo to describe how information is carried for
  specific uses.

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Changes from Encoding 03.txt

• Removed encodings for general concepts to
  Gen-Encode.
• Generalized Simplified Resource Pool
• Use Resource block terminology to refer to
  either wavelength converters, regenerators, or
  other processing
• Resource blocks can contain multiple identical
  resources ? better for encoding OEO switches,
  regular regenerators.
• Added in WSON signal compatibility and processing
  capability information encodings from
  ietf-ccamp-signal-compatibility-ospf-00.
• Resource block info sub-TLV
• Related sub-sub-TLVs Input Modulation, Input
  FEC, Input Bit Rate, Input client signal types,
  Processing Capabilities, Output modulation types,
  Output FEC types.

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Resource Pool Information Model

• ltNode_Infogt ltNode_IDgtOther GMPLS sub-TLVs
  ltResourcePoolgtltRBPoolStategt
• where ltResourcePoolgt ltResourceBlockInfogt...
  ltResourceBlockAccessibilitygt...
  ltResourceWaveConstraintsgt...

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Resource Pool Encoding
General Model
(c) Half Clear
(a) Shared by node
(b) Shared by port
(d) Shared by Wavelength, W5, M3, p2
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Resource Pool Encoding (cont)
(e) Shared with Local
(h) OEO switch with DWDM optics
(f) Shared with Local
(i) Regenerators on a DWDM line
(g) Shared with Local
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Compatibility Encoding

• Applied to the Resource Block sub-TLV
• Resource block info sub-TLV
• Addresses the compatibility and capabilities of
  the resources in a block.
• sub-sub-TLVs Extracted from OSPF WSON
  compatibility draft.

Resource Block Set Field
Input Modulation
Input FEC
Input Bit Rate
Input client signal types
Processing Capabilities
Output modulation types
Output FEC types.
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Next Steps

• Polish, refine, prepare for last call