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MPLS Diffserv Extensions related questions/comments

  • From: CATANZARITI Sergio FTR&D/TI <sergio.catanzariti@rd.francetelecom.com>
  • Date: Mon, 5 Jun 2000 15:39:48 -0700
  • Cc: "'Bora Akyol'" <akyol@pluris.com>, mpls@UU.NET, tom worster <tom@ennovatenetworks.com>

Title: RE: MPLS Diffserv Extensions related questions/comments

I agree that it would be actually very helpful. I would like to build topology-driven LSPs and use EXP-PHBs stuff for differentiating CoS-like traffic.

I do not understand the "hardware cost friendly" problem. The real issue here is to have a flexible LSPs management/control plane (I do not understand where the signalling problem is in all this) that would allow me to do it in a simple, and semantically congruous manner.

It should not be that hard, at least at the provisioning level, and I guess I saw it already but I do not recall now which vendor was it :-).

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
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    -----Original Message-----
    From:   Curtis Villamizar [SMTP:curtis@avici.com]
    Sent:   Monday, June 05, 2000 3:20 PM
    To:     tom worster
    Cc:     'Bora Akyol'; mpls@UU.NET
    Subject:        Re: MPLS Diffserv Extensions related questions/comments


    In message <000c01bfcca6$07841f80$7503010a@ennovatenetworks.com>, "tom worster"
     writes:
    > From: owner-mpls@UU.NET [mailto:owner-mpls@UU.NET]On Behalf Of Bora Akyol
    > >
    > > 8. THIS IS A GRIPE. Did anyone consider hardware pipelining,
    > > etc while this
    > > spec was being written? This actually is one of my biggest
    > > gripes about
    > > Diffserv. It is so damn flexible which makes almost any HW
    > > implementation
    > > leave out features, maybe we should have started something
    > > that was concrete
    > > and implementable.
    >
    > speaking of hardware... the requirement in diff-ext-04 for
    > support of exp->phb mappings on a per lsp basis set by
    > signalling does not really seem to be "hardware cost
    > friendly," so to speak. does anyone really need an arbitrary
    > mapping for each lsp?
    >
    > c u
    > tom


    IMHO this will be useful.

    It isn't really that hard.  Implementations exist.  (At least one that
    I know of).

    Curtis