[c-nsp] Removing transit AS from path

[Gaspar Peter]

Hello,

We would like to connect two ISPs using MPLS Backbone but we have
following requirements:

1. Both ISPs use private AS numbers
2. Our MPLS backbone has also a private AS
3. The actual requirement is, that the AS number of the interconnecting
MPLS Backbone is not included in the AS-Path visible on the routers of
both ISPs

The ISPs do not use MPLS, they only need native IP connectivity, eBGP
should be used to exchange routes.

Does anyone of you guys already implemented similar architecture? What
are the possibilities?

One solution that pops into my mind would be to implement GRE Tunnels
between the ISP routers, but it is not very scalable.

Could "local-as no-prepend" feature help if I implement it on my MPLS PE
routers like this:
!
router bgp 65500
neighbor 192.168.1.1 remote-as 65501
neighbor 192.168.1.1 local-as 65500 no-prepend
!  

Thanks,
Peter