[c-nsp] L3VPN over RSVP

[MKS]

Hi all

I can see that on a spoke site the bgp next-hop command is a nice way
of routing the traffic to the TE tunnel that is pointed to the hub
site.

Now I guess that on the hub site I would have to use a route-map to
direct each spoke site to the corrent TE tunnel, or am I missing the
point?

Regards
MKS

On Thu, Jun 10, 2010 at 6:28 AM, Arie Vayner (avayner)
<avayner at cisco.com> wrote:
> Marko,
>
> I agree it can be done, but at least in my head, the egress option is more scalable...
> You can have a specific RT allocated to "premium" VRFs, which would be only exported, and never imported in any VRF.
>
> Then you implement 2 loopbacks on each PE, and when the PE advertises the routes, it changes the NH to be a different loopback for all the premium VRFs, using a single route-map clause.
>
> Of course this all goes away with the bgp next-hop command.
>
> Arie
>
> -----Original Message-----
> From: Marko Milivojevic [mailto:markom at ipexpert.com]
> Sent: Wednesday, June 09, 2010 21:43
> To: Arie Vayner (avayner)
> Cc: MKS; cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] L3VPN over RSVP
>
> On Wed, Jun 9, 2010 at 18:20, Arie Vayner (avayner) <avayner at cisco.com> wrote:
>> In older releases, where this command is not available you can apply a
>> route-map on the output direction of the BGP session to the RR, match
>> the RT of the VRF, and set a different next-hop. It would do the same as
>> above but without the custom made command.
>
> It can be done in the inbound direction, too. Couple of weeks ago I
> wrote a blog article that tweaks next-hop of the incoming VPNv4 update
> as a workaround for broken LSP. The same solution can be used to force
> the traffic via TE tunnel. Here is the link:
>
> http://blog.ipexpert.com/2010/05/31/next-hop-in-mpls-vpns/
>
> --
> Marko Milivojevic - CCIE #18427
> Senior Technical Instructor - IPexpert
>
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