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    62nd IETF Minneapolis February 2005

    MRN document set

    Requirements

    Analysis

    GMPLS ProtocolExtensions

    draft-shiomoto-ccamp-gmpls-mrn-reqs

    draft-papadimitriou-ccamp-gmpls-mrn-extensions

    draft-leroux-ccamp-gmpls-mrn-eval

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    Requirements for GMPLS-based multi-

    region networks (MRN)

    draft-shiomoto-ccamp-gmpls-mrn-reqs-01.txt Kohei Shiomoto: [email protected] Dimitri Papadimitriou: [email protected]

    Jean-Louis Le Roux: [email protected] Vigoureux: [email protected]

    Deborah Brungard: [email protected] Eiji Oki: [email protected]

    Ichiro Inoue: [email protected]

    Emmanuel Dotaro: [email protected]

    mailto:[email protected]:[email protected]:[email protected]:[email protected]
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    Major changes (00->01) Some clarifications

    VNT (see next slides) Node categories (see next slides) Vertical vs Horizontal integration Multi-region signaling

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    62nd IETF Minneapolis February 2005

    VNT: Virtual Network Topology

    VNT 1 VNT 2

    TE based on dynamic reconfiguration of VNT Optical-layer provides VNT for packet-layer VNT is re-configured by LSP setup/teardown.

    Optical-LSP is routed over the fiber topology.

    Traffic demand

    Current VNT

    New VNT

    r r r

    r r r

    r r r

    nnnn

    nn

    ,2,1,

    ,22,21,2,12,11,1

    PPP

    PPP

    PPP

    nnnn

    n

    n

    ,2,1,

    ,22,21,2

    ,12,11,1

    PPP

    PPP

    PPP

    nnnn

    n

    n

    ,2,1,

    ,22,21,2

    ,12,11,1

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    62nd IETF Minneapolis February 2005

    Node categories Multiple switching capable nodes: simplex versus hybrid A simplex node

    single switching capability per interface , but can comprise of interfaceswith distinct switching capabilities

    advertises several TE Links each with a single SC value as part of itsISCD sub-TLVs.

    A hybrid node multiple switching capabilities per interface , and interfaces of the same

    hybrid node may have different multiple switching capabilities advertises at least one TE Link containing multiple ISCDs with different

    SC values (at least one per supported SC value per interface).

    TDM

    PSC

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    Evaluation of GMPLS Protocolsagainst Multi Region Networks

    draft-leroux-ccamp-gmpls-mrn-eval-00.txt

    Jean-Louis Le Roux (France Telecom)Deborah Brungard (AT&T)Eiji Oki (NTT)Dimitri Papadimitriou (Alcatel)Kohei Shiomoto (NTT)Martin Vigoureux (Alcatel)

    IETF 62, Minneapolis 03/08/2005

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    Evaluation Result

    MRN Requirements Implies GMPLS protocols ?

    Required GMPLS extensions

    Control of Forwarding Adjacencies (FA)setup/release

    YES No

    Virtual FAs YES Signaling of soft-FA

    Traffic Disruption minimization during FArelease

    YES Need for Graceful TE-linkdeletion

    Path computation stability NO NoSupport for FA LSP attributesinheritance

    YES No

    Support for Triggered signaling YES No

    Support for Multi-region signalingYES Inclusion/exclusion of ISCin G-RSVP

    FA connectivity verification NO No

    Advertisement of Internal AdaptationCapabilities

    YES Routing extensionNew sub-TLV

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    Generalized Multi-Protocol Label Switching (GMPLS)Protocol Extensions for Multi-Region Networks (MRN)

    draft-papadimitriou-ccamp-gmpls-mrn-extensions-01.txt

    Jean-Louis Le Roux (France Telecom) Deborah Brungard (AT&T)

    Kohei Shiomoto (NTT)Dimitri Papadimitriou (Alcatel)

    Martin Vigoureux (Alcatel)

    IETF 62, Minneapolis 03/08/2005

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    From last version (v00.txt)

    Editorial revision

    Coverageadvertisement of interface adaptation capability (internal

    termination capability)

    multi-region signaling

    Multi-region signalingExclude Route (XRO) for excluding set of one or more SC from a

    link supporting multiple SCs

    Explicit Route (ERO) for including a specific SC from a linksupporting multiple SCs

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    Next revision

    Cover signaling of virtual Forwarding Adjacencies

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