[j-nsp] BGP advertise-inactive (even not the *best* BGP route)

[Tony Li]

It seems like you could do that by setting up a multi-hop EBGP
connection to each and every router from your looking glass.  Put
the looking glass in a separate private AS and you're done.

Tony


On Aug 19, 2004, at 5:14 PM, Daniel Roesen wrote:

> On Thu, Aug 19, 2004 at 05:03:22PM -0700, Pedro Roque Marques wrote:
>> All the stuff you guys are asking for already exists...
>
> Not necessarily.
>
> Think of some kind of "looking glass" application where you want to
> run a router where you can peek into all the BGP RIBs of all routers
> in your as. Typical question: "from where do I see x.x.x.x/x"... it's
> difficult to answer that because each router gives only the best route
> to the IBGP neighbors. But e.g. on a peering router, you might receive
> the same route from a couple of peers. But this fact can be only seen
> on the peering router itself. So by looking at IBGP, you can only tell
> "which routers receive the prefix", and you'll have to check each of
> those routers for all inactive BGP routes for the prefix in question.
> It would be nice to have some magic knob which does (as Tony suggested)
> add some UNIQUE route distinguisher to each route exported to the
> special "looking glass" IBGP neigbor.
>
> I'm not sure wether I'm clear in explaining my thoughts...
>
>
> Best regards,
> Daniel
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