Accordingly, we introduce four network entities: forwarder, controller, manager
and separators. In the 3N architecture, the forwarding network
mainly forwards packets at the behest of the control network and
the management network; the control network mainly perform
route computation for the data network; and the management
network mainly learn about the situation of the data network and
distribute policies and configurations, and the three networks
working together to consist a efficient network system. In this
paper we presented a high level overview of 3N architecture and
some research considerations in its realization. We think the 3N
architecture is helpful to improve network security, availability,
manageability, scalability and so on.