On 2012-11-02 11:41, Roman Hochuli wrote:
I would propose BGP on CE-PE link, with some BGP community policy.
As far as I understand this document is talking about bgp-setups as a whole. I would be more interested to hear if they would break out a subnet out of their PA-allocation and accept that back over <insert routing protocol of choice here> from their customer.
I've seen that kind of setup (give a chunk of PA to customer, let customer announce it to the ISP in question so that customer can be multihomed)) in various places. The choice of routing protocol just depends on what devices are connected to either side. The preference for it then typically is OSPF, BGP and last RIP and friends.