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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

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

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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