Hi Xiaohu,
|Should the geographically aggregatable address be out of the
|consideration?
|For example, the site networks will use geographically aggregatable
|addresses which are independent of the ISPs. However, these
|addresses can be
|aggregated in the ISP network even though the transit networks
|within some
|region are required to be connected directly or indirectly.
No, geographically aggregatable addresses are not out of
consideration.
However, to seriously propose them, one should also include
solutions to the
well known issues with geographic aggregation. At the very least,
these
include the resulting common interconnect within the geographic area
and the
effective mandate of the topology.
Regards,
Tony