[c-nsp] BGP query

[Arie Vayner]

This sounds to me as if your multi-ebgp-hops environment should use
something like confederations?


On Thu, Mar 10, 2016 at 11:56 PM Antoine Monnier <mrantoinemonnier at gmail.com>
wrote:

> neighbor (ip) allowas-in
> but be careful of routing loops
>
> On Thu, Mar 10, 2016 at 5:38 PM, james list <jameslist72 at gmail.com> wrote:
>
> > Dear experts
> > I've a BGP question. I've a router peering with a customer of mine, plain
> > EBGP no MPLS, see following chain as example:
> >
> > myroutera --ebgp-- myrouterB --ebgp-- myrouterC --ebgp-- mycustomerA
> > --ebgp-- mycustomer_BGP_worldwide_network
> >
> > Between myrouterX I use EBGP with private AS, now I've mycustomerA router
> > that in its BGP path is injecting to me a private AS already present in
> my
> > network and I'm getting routes discarded for that at the end of the
> chain.
> >
> > I tried to use:
> >
> > - remove_private_as on myrouterC towards my network in egress but it
> seems
> > that it's able to remove only if there are private as in the path and at
> > the first not private stop removing;
> > - as_override but it works only under a vrf environment and it's not the
> > case
> >
> > I'm wondering if you see another solution, I'm thinking to a route-map
> that
> > "match" as-path or network and then a "set" of AS path in the egress
> > session among myrouterC and myrouterB,
> > but I do not see it very scalable and manageble...
> >
> > Any idea if I'm correct or other solutions you see ?
> >
> > Cheers
> > James
> > _______________________________________________
> > cisco-nsp mailing list  cisco-nsp at puck.nether.net
> > https://puck.nether.net/mailman/listinfo/cisco-nsp
> > archive at http://puck.nether.net/pipermail/cisco-nsp/
> >
> _______________________________________________
> cisco-nsp mailing list  cisco-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/
>