Reasearch And Implementation Of Forces-Oriented Distributed Ospf Protocol

As the Internet flow and scale continuous increase, the performance requirements of routers is getting higher and higher. Centralized control plane in is ForCES-based router suffer certain limits, such as storage and computing power. Therefore, it is difficult to meet future network demand. So, it is significant to study distributed routing protocols to improve control plane of the performance for satisfying the needs of future network.This thesis mainly studies some key techniques of distributed OSPF in ForCES-based routers, including:(1) decomposition scheme of distributed OSPF implementation; (2) analysis of distributed OSPF implementation; (3) routing table management and routing synchronization mechanism.Depending on the study of the above key technologies, this thesis mainly completes the following tasks.(1) The module of Zebra OSPF routing protocols are allocated to CE and FE, based on the coupling between modules.(2) Two kinds of distributed OSPF implementations are theoretically compared and analyzed in terms of hello packet processing, flooding processing, and protocol convergence.(3) Synchronization mechanism in distributed OSPF is studied. The scheme of the routing table management and routing synchronization for ForCES architecture is designed.(4) The scheme of distributed OSPF for the ForCES architecture has been implemented. (5) Finally, we carried out experiments to test and analyze distributed OSPF for ForCES architecture. The test results show the scheme of distributed OSPF is feasible and correct. Furthermore, through the performance analysis, we found that this design of distributed OSPF router is superior to the centralized OSPF routers in hello packet processing and flooding information flows.