In [I-D.ietf-cdni-use-cases], the Inter-Affiliates CDN
Interconnection use case is described. In this scenario, a large CDN
Provider may have several autonomous or semi-autonomous subsidiaries
that each operates on their own CDN. The CDN Provider needs to make
these down-stream CDNs interoperate to provide a consistent service
to its customers on the whole collective footprint.
This document illustrates in details the CDNi experiment that has
been carried out by China Telecom, and the lessons and experiences to
CDNi standardization work.