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  • 1.  ospf traffic-engineering

    Posted 10-21-2012 03:26

      ospf {
            traffic-engineering;

    }

     

    what does this mean when put traffic-engineering under ospf hierarchical config

     

     



  • 2.  RE: ospf traffic-engineering

    Posted 10-21-2012 04:00

    Hello,

    Short answer is it enables processing of OSPF LSA Type 10 and creates TED (traffic engineering database).

    http://tools.ietf.org/rfc/rfc3630.txt

    HTH

    Alex



  • 3.  RE: ospf traffic-engineering

    Posted 10-21-2012 06:43

    how to check this TED?



  • 4.  RE: ospf traffic-engineering

    Posted 10-21-2012 08:57

    what is the relationship between this TED and ospf database?



  • 5.  RE: ospf traffic-engineering
    Best Answer

    Posted 10-21-2012 18:18

    When you enable ospf  traffic-engineering, OSPF will generate LSAs that carry traffic engineering parameters.

     

    Router builds TED according to these parameters and  TED is used by Constrained Shortest Path First (CSPF) to compute MPLS LSPs.

     

    OSPF database is used by SPF to calculate the best IGP routes.

     

    You can check the TED by " show ted database"

     

    Regards,

    Moses N

     



  • 6.  RE: ospf traffic-engineering

    Posted 10-21-2012 21:58

    only if cspf is enbaled in rsvp,this ospf    traffic-engineering will play a part ,right?

     

    if no cspf under rsvp,this config is useless,right?



  • 7.  RE: ospf traffic-engineering

    Posted 10-21-2012 22:08

    Yes. You are correct. TED is used by CSPF.

     

    If you don't have CSPF configured for LSPs, then TED is not used.