Design And Implementation Of Optical Network Broadband End-to-End Failure Judgment System

Under the background that China proposes to speed up the construction of high-speed broadband network,the proportion of optical fiber broadband users represented by the way of optical fiber to the home access is constantly increasing.With the expansion of services such as high definition video and online live broadcast,users' requirements on network quality are also increasing,and network operators are also putting forward higher requirements on improving network operation guarantee ability,especially optical network failure judgment ability.The thesis aims at researching and designing an automatic failure judgment system that can locate and analyze the failure between local terminal equipment and client terminal equipment.Based on the passive optical network technology and combining the PON network networking design scheme of Heilongjiang Telecom and the actual situation of PON access network management,the network factors affecting the optical network broadband user perception are analyzed.According to the influencing factors to determine the failure judgment required for acquisition of PON network related equipment resource data,obtain user terminal and optical line terminal equipment of luminous power,broadband identifier LOID,access equipment IP,terminal registration status,user inside and outside layer virtual LAN segments,user rate limit template,MAC address forwarding table data.And collect the user's basic information in the customer relationship management system,including account number,bandwidth,business package and other information,which is used to compare with the actual configuration information of equipment resources and assist in judging failure.Assemble the data according to the physical path and business path to form the network structure topology covering all the network devices and cables from the operator's office to the user's terminal,and establish a tree model for the user,namely the user resource tree.When the user has network failure,the corresponding OLT,PON device port and optical fiber line can be found according to the user resource tree.For active devices,call the online status test ability of system.For passive equipment and lines,the failure location can be determined by combining the terminal state of the user side and the state of the PON equipment port and the optical network unit under the splitter.Then combined with the actual maintenance experience of the network,make fault judgment rules by classification.According to the rules,the automatic failure judgment function of optical network equipment is designed.The failure judgment function can be encapsulated into a complete long process of failure detection according to the needs of business scenarios,or divided into separate diagnosis functions for different network links for the use of peripheral systems.According to the broadband operation scale and data storage requirements of the operator's optical network,the system configuration is calculated,and the recommended configuration is obtained,and the failure judgment system is built based on the operator's hardware network topology.