A simple optimized multi-class routing scheme was proposed to avoid the inter-class effect in single-class routing scheme.

Simple multi-class routing scheme in Diff Serv and MPLS network;

Analysis on routing mechanism in Windows multi-networkcard platform;

Research on multicast routing mechanism in sparse splitting optical networks

The architecture of optical Internet is discussed, the networking methods are analyzed, and the OSPF routing protocols and the routing mechanism for peer model are deeply investigated, which can be a instruction meaning for constructing optical Internet.

With the overall employment of multimedia technology and the increasing communication in the Internet,QoS routing is playing an important role in most application areas.

The dissertation focuses on the research of secure routing mechanisms of WSNs and is outlined as the following:(1)A secure directed diffusion protocol based on random key pre-distribution model is proposed,which provides secure routing by extending the security of the directed diffusion protocol.