Police Network Communication Characteristic And Flux Testing And Analysis

The network scale extends continuously, the network conductmatures increasingly, analyse network data as the decision basis isneeded more and more,and along with people's approbation to thenetwork importance, logarithms according to continuously raise of thesafety,usefulness,understanding, it is necessary to analyse the networkdata ofcarrying a body to the information, then monitor,analyse thenetwork circulate,the network serve and the network develop trend,carry on a valid processing to the excrescent discharge, control thenetwork movable regulation well. NetFlow is the network data of theCisco company body door to wrap the commutation technique, canbe used to record the information of the network flow, as to theanalysis, can control the network movement circumstance.The network management is for satisfying service request ofvarious object at any time, assurancing the network cost to be the mostrationaly, function to be the best, thus carry on a plan, management,analysis, evaluation, design and enlargement to the network, in orderto assign availably and adjust resources harmoniously.It applicatescomprehensively the calculator network technique and themanagement science ,to resolve the network probloms inside each lifecycle of network. The network management includes all activities ofthe operation and maintenance to the network in order to contentcustomer in the period of using the network, research and handle agreat deal of technique type and not technique type problem. The basicpurpose of the network management is to resolve various problems innetwork , make the network on the foundation of efficient anddependent provides the biggest convenience for the customer, andprovide means for the maintenance and expanence of the network. Thenetwork management's aim is to improve the usability ,thedependability ,the maintainability and the security of the network, Itrelates to the application of the network directly, the strong or weak ofthe management function is the important marking that measures thenetwork system, is the strong support that promises the network tocirculate normally.The bottom layer of the network management system is the datacollection layer, is the only layer that makes contact with thenetwork equipments in the network management system, connectdirectly with the net element equipments.The data collection on the structure is belong to the datacollection layer of the network management system. The function ofthe data collection is to collect the warning report that variousequipments produce,in order to carry on the auto or hand to the supplycollection. Because of the numerous equipments in the network, andeach difference of type, make the data collect very complicately,sincemake sure collect the data timely that make assurance of the data'sintegrality and veracity. Therefore put forward a very high request tothe data collection layer.And the part of the interface collection mustbe flexible and extended.The request is to setup the collecting time andcollecting period, receive the data information from the net elementequipments report on real time, start the data collection procedure withthe hands in time,make sure the integriy of the data colletion.This text applies a kind of network information collection waythat bases on the NetFlow commutation on the router.Make use of thenetwork collection tools to collect datas in many main stem networksand the network boundary node respectively, monitor the head ofevery data package,put every catched package which is marked intime into the database, for the analysis off-line in the days. In thenetwork management based on NetFlow,the performance managementis a very important management founcton among them,it is incharge ofmonitoring the founction of the network,carrying on the performancewatching to the network,the network unit or the equipments, collectrelated performance statistic data, evaluate the effectivity of thenetwork and the network unit, report the appearance of the networkequipments,support the network programming and network analysis,notify the information to the network manager in time under theperformance watching,provide the basis and guarantee for the normalfounction andoptimization of the network.