Signaling extensions for wavelength switched networks
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Signaling Extensions for Wavelength Switched Networks. draft-ietf-ccamp-wson-signaling-01.txt. Greg Bernstein Grotto Networking Young Lee Huawei Sugang Xu NICT Hiroaki Harai NICT Daniel King Old Dog Consulting Giovanni Martinelli Cisco. Updates 00->01.

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Signaling Extensions for Wavelength Switched Networks

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Signaling extensions for wavelength switched networks

Signaling Extensions for Wavelength Switched Networks

draft-ietf-ccamp-wson-signaling-01.txt

Greg BernsteinGrotto Networking

Young LeeHuawei

Sugang XuNICT

Hiroaki HaraiNICT

Daniel King Old Dog Consulting

Giovanni MartinelliCisco

80th IETF Prague (CZ)


Updates 00 01

Updates 00->01

  • Section 4: encoding aligned with info model

  • Section 5: Bi-directionality

  • Section 6: DWA, reconciled with bidirectionality

80th IETF Prague (CZ)


Wson attributes

WSON Attributes

  • WSON specific information within a dedicated LSP_ATTRIBUTE:

    • FEC encoding

    • Modulation Format

    • Regen processing configuration

  • No specific TSPEC update for WSON

80th IETF Prague (CZ)


Bidirectionality

Bidirectionality

  • Need WG comments on possible options.

  • Output from RWA process: a path and a Label Set.

  • Possible Options in signaling function

    • Option1: current, bidir LSP (Label_Set + Upstream_Label)

    • Option2: bidir LSP (Label_Set or Label_Set + some extension to Upstream_Label)

    • Option3: two unidirectional LSPs (associated?)

80th IETF Prague (CZ)


Opt 1 and 2 bidirectional lsp

Opt 1 and 2: Bidirectional LSP

  • Option 1

Path(LS+UL)

Several Path

Attempt

required

PathErr (AcceptableLabelSet)

Egress

Egress

Interm

Interm

Ingress

Ingress

Path(LS’+UL’)

Resv

  • Option 2

ONE Path

Attempt

required

Path(LS, or LS+UL set)

Resv

80th IETF Prague (CZ)


Option 3

Option 3

  • Two unidirectional LSP.

  • Worth considering association (e.g. draft-zhang-mpls-tp-rsvpte-ext-associated-lsp-03).

  • Pros:

    • Simple independent signaling.

    • Transport environment may need independent oam.

    • Each LSP for map a physical resource: a wavelenght

  • Cons:

    • Bigger State to maintains

80th IETF Prague (CZ)


Next steps

Next Steps

  • Updates according to WSON info model and encoding draft

  • Bi-directionality decision

80th IETF Prague (CZ)


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