Re: MPLS Hub and Spoke

Thanks Marko. That was what I was unsure about.

On 20 March 2010 06:42, Marko Milivojevic <markom_at_ipexpert.com> wrote:

> Routes are imported into the VRF tables based on route-targets theu
> carry. Imported routes do not become part of that VRF in a sense that
> they get new RT attached. They are also not exported from VRF. So,
> once the hub learns the route from a spoke, it will not import it to
> the VRF, export it out and advertise to another spoke.
>
> --
> Marko Milivojevic - CCIE #18427
> Senior Technical Instructor - IPexpert
>
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> On Fri, Mar 19, 2010 at 20:03, Muzammil Malick <malickmuz_at_gmail.com>
> wrote:
> > Hi
> >
> > If I have 2 Spoke VRFs peering via eBGP peers to CE and then I create a
> hub
> > VRF to import and export to these spoke VRFs why do
> > the spokes not learn about each others routes?
> > Surely if the hub is learning routes from both vrf's then when it exports
> it
> > will send these routes to
> > each of the spokes. If I introduce a route into the hub VRF this
> > is propagated to the spokes.
> >
> >
> > ip vrf hub
> > rd 64700:1
> > route-target export 1:100
> > route-target export 2:100
> > route-target import 1:100
> > route-target import 2:100
> > !
> > ip vrf spoke1
> > rd 64700:2
> > route-target export 1:100
> > route-target import 1:100
> > !
> > ip vrf spoke2
> > rd 64700:3
> > route-target export 2:100
> > route-target import 2:100
> >
> > Just to let you know , I am aware of exactly how to provide spoke to
> spoke
> > connectivity through the hub but I do not understand
> > why the above case does not work.
> > I am obviously missing something in my understanding.
> > Any help is appreciated.
> >
> >
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Received on Sat Mar 20 2010 - 10:05:15 ART