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Core and Edge routers

  • From: "Vikas Arya" <vikas@juniper.net>
  • Date: Wed, 7 Apr 2004 16:09:06 +0530
  • Thread-Index: AcQcDA9+uhhWsQklRGWdNonMsavuAgAfQb4w
  • Thread-Topic: Core and Edge routers
  • X-MIME-Autoconverted: from quoted-printable to 8bit by cell.onecall.net id i37B2wn30425
  • X-OriginalArrivalTime: 07 Apr 2004 10:39:11.0783 (UTC) FILETIME=[90756B70:01C41C8C]

Hi Ali,
Plz see my responses inline..


Hi,
It may be obvious question but I need to be sure ..
Does MPLS LSPs exist only between ISP Edge routers ??


>>>>>>>> MPLS LSP "can" exist between ISP Edge routers, for example, RFC
2547 - BGP/MPLS VPNS,
         but it is "NOT" true that MPLS LSP exist only between ISP Edge
routers.
         In one scenario, ISP can run IP in the edge and can use any
MPLS applications in the 
         core routers, for example, MPLS-TE.


 What about LSPs between Core routers (I read an article about a network
divided into regions. All routers in each region are meshed to form the
first layer of LSPs while core routers in all regions are fully meshed
to form a second layer of LSPs).


>>>>>>>> Again, what this article says, applies to specific applications
of MPLS, and can not be a rule.


Thanks,
Vikas         


Thanx

Ali