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Cell Relay Retreat>MPLS WG Archive>month:2001-Sep> msg00406



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MPLS and QoS

  • From: David Charlap <David.Charlap@marconi.com>
  • Date: Fri, 28 Sep 2001 10:29:21 -0400
  • CC: "krishnakanth.rao" <krishnakanth.rao@mail.cominsights.com>, mpls@UU.NET

Ibrahim Okumus wrote:
> 
> MPLS can support QoS in IP networks by using 3 exp bits as QoS
> indicator and used in a diff-serv domain. There are basically 2
> different ways to do this. Either you can use the exp bits to
> determine the level of QoS ( EF, AF, etc.) or you can use the whole
> label and relate that to one of the PHBs in a diffserv network (
> there approaches are E_LSP and L-LSP)

This is the DiffServ draft.

It is also possible to do QoS with MPLS without DiffServ, by simply
choosing a particular level of QoS for each LSP.  The CR-LDP and RSVP-TE
protocols both allow this.  LDP does not.

-- David

  • References:
    • MPLS and QoS
      • From: Ibrahim Okumus <iokumus@mailbox.syr.edu>