A Network Management System Based On Stacking Technology And Its Application For Up To 400G Optical Transmission

With the advent and popularity of broadband services,such as mobile internet,high-quality Internet Protocol(IPTV),big data,etc,demands for bandwidth are showing the scale of exponential growth,the mainstream transmission equipment has developed to single-wavelength 100 G capacity from 10 G due to its bottleneck.To adapt to the change,as the support network,the transmission network is entering an accelerating era of 100 G or beyond 100 G.However,the traditional 100 G technical scheme which adopts PDM-QPSK is high-cost,and the standards for high-speed technologies such as 400 G are still immature,which makes it difficult to be put into large-scale commercial use.On the other hand,node equipment of network element is generally managed independently,which results in a waste of IP resources.In the meantime,the increasing network devices add to pressure on network management,which will make it complicated.High-capacity and multi-type optical transmission requires effective network management.Therefore,it is essential to reduce the logical devices utilizing virtualization,through which network topology can be simplified.Under the above circumstances,the thesis proposes a new low-cost and miniature 100 G transmission scheme.And to realize incrementally transmission capacity expansion on one node as well as centralized and simplified management of multiple physical devices,based on the 100 G system,the thesis further focuses on a novel management system based on stacking technology,which can be applied to maximal optical transmission capacity of 400 G,but with one IP address of numbers of network elements.They are one node to the external.There is only a master unit called NC and three slave devices called SC,and NC can monitor and manage the whole stacking system.The plateform has a significant size and device cost advantage comparing with large rack equipment.Firstly,the thesis studies the system application scenarios and related technical shcemes,and determines the use of stacking technology to achieve unified network management.Then,it proposes and analyses software architecture of VxWorks operation system.Secondly,on the basis of overall requirements and design,the thesis completes the design in the order of bottom to upper layer,and focus on the network management port stacking.It completes the design and development of bottom level driver,including the BSP part,FCC enhanced driver,and it configures softaware and hardware interfaces of the STK subcard module.In software detailed design part,the thesis designs system communication protocols,completes the design of heartbeat module that performs monitoring system status and maintains inter-board communication,it also achieves the design of management and synchronization of master and slave equipment,the design of DB module which stores configuration and management information,and the design of the other upper layer modules,such as HWM module and CLI module.Finally,build the testing environment of 100 G and stacking respectively to test the performance of 100 G equipment and the function of network management system based on stacking.Test results show that the system operates continuously and stably without abnormalities after 24 hours,and four 100 G devices can be stacked.Moreover,master device can monitor,configure and manage the other devices in the system,which achieves the desired design goals.