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Information about optical routing in MPLS net.

  • From: CATANZARITI Sergio FTR&D/TI <sergio.catanzariti@rd.francetelecom.com>
  • Date: Thu, 15 Jun 2000 15:08:03 -0700
  • Cc: "'Tony Li'" <tli@Procket.com>, clapp@research.telcordia.com, xuyg@lucent.com, mpls@UU.NET, darren.freeland@bt.com, CATANZARITI Sergio FTR&D/TI <sergio.catanzariti@rd.francetelecom.com>

Title: RE: Information about optical routing in MPLS net.

Mine was not an MPLS/IP biased opinion. I was only trying to say that using IP to carry full-fledged control plane information for a multi-client optical network is not an assumption validated enough today to be accepted as a basis for a universal (key adjective) Optical Internetworking control model and mechanisms. Again, at least in carriers PMOs. This has nothing to do with the multi-protocol (mainly data plane) support of MPLS.

Sergio

    --------------------------------------------------------------------
    Sergio Catanzariti
    Senior Project Manager, Technology Integration
    France Telecom R&D
    1000 Marina Boulevard Suite 300
    Brisbane CA 94005
    Tel. 650-875-1526
    Fax. 650-875-1505
    email:sergio.catanzariti@rd.francetelecom.com
    --------------------------------------------------------------------


    -----Original Message-----
    From:   Peter Ashwood-Smith [SMTP:petera@nortelnetworks.com]
    Sent:   Thursday, June 15, 2000 12:13 PM
    To:     CATANZARITI Sergio FTR&D/TI
    Cc:     'Tony Li'; clapp@research.telcordia.com; xuyg@lucent.com; mpls@UU.NET; darren.freeland@bt.com
    Subject:        Re: Information about optical routing in MPLS net.

    >      > It would simply use the IP network as the out-of-band control plane.
    >
    > Fully agree on the advantages. But, this is still an open problem rather than an acceptable and stable solution, at
    > least in today carriers operational models.
    >
    > Sergio

        What you are seeing is a recognition by many folks that a PATH regardless of
    what we call the labels can be controlled by MPLS (if the MPLS protocols are
    suitibly generalized). What actually goes over these paths can be anything. After
    all, that is the "MP" part of "MPLS".

        Constraint based, distributed source routing with an OSPF/IS-IS style
    topology database are the preferred solution to path oriented routing problems
    and have been used for a number of years now in ATM and proprietary systems
    so it is only natural to extend them to Optical networks.

        Cheers,

        Peter Ashwood-Smith