[c-nsp] BGP leak prefixes over IPv4 tunnel

[Nick Kraal]

Hi all,

A memory loss problem here.

We/ISP_A are trying to leak prefixes (which are not seen on the public 
Internet) to a remote network/ISP_B via BGP. At this point of time we 
are planning to build this via BGP over a IPv4 tunnel interface.


ISP_A-------Transit_Provider-------ISP_B  :physical connection
    ==================================
    Tunnel /30 WAN address from ISP_A      :tunneled 'WAN' connection
    ==================================

The BGP session is built on the tunnel /30 'WAN' address, and are 
announcing ISP_A and the leak prefixes to ISP_B via this arrangement. 
And ISP_B will announce their prefixes via the this tunneled session also.

The BGP and route map configurations are standard vanilla. I seem to 
remember some issues caused by BGP loop detection, and need some static 
routes to be involved. This is where the memory fails.

Any ideas would be appreciated.

Thanks in advance,

-nick/