Design Of Core Component And LR-PON Architecture Based On OpenFlow

With the arrival of the big date age,the quantity of information and the data services growing rapidly.To meet the needs of the random,sudden,variety trend of the network services,The next generation optical network is proposed to take the place of the existed network which is not able to satisfy the command of the big data.As a result of that the next generation network should be developed in a dynamic,flexible,reconfigurable direction,a solution of software-defined optical networks which can meet the requirements above is proposed.The development of the SDN which support the SDON breaks the traditional network model,which integrates the intelligent of network nodes into the control plane,so that the separation of control and forwarding can realize centralized network control management and open network function development.On this basis,an optimized metropolitan network and access network architecture of WDM-Long-Reach-PON in the field of metro-access network is designed In this paper,furthermore a key device deployed in the remote node which can respond to the flexible control of the control plane is designed.The architecture adopts centralized control and management mode based on SDN to realize the centralized control of network resources and the scheduling of network resources.At the same time,the designed device is in response to the allocation and adjustment from SDN controller,it also can improve the utilization of network resources by executing function flexibly and dynamicallyFor flexible,dynamic and reconfigurable developing trend of the next generation optical network,In this paper,the abstract network model and Mininet and OVS software are used to design the routing experiment based on the shortest path algorithm and the virtual machine migration experiment on the established model,and simulate the response measures and results of SDN in the context of network resource congestion.In this paper,tunable AWG filter--a network core device that can make response to the control plane was designed.The filter can fit the next generation network’s requirements and adjust the network resources quickly and flexibly according to the controller signal,which provides the basis for the routing algorithm.And,the central wavelength and bandwidth tuning capabilities of the device are verified in the simulation software,with a satisfactory simulation results.In summary,the design and simulation of the metro-access network system has reference value for the developing mode of the next generation optical network.