The Security Programs Of QoS For CMNET Multi-service Backbone Network

IP network QoS security technology is a hot topic of current research, to enable IP networks to provide high quality services to meet the audio, video, images and other businesses call for the use of a reasonable allocation of network resources, QoS technology. With CMNET backbone network carrying business gradually increased, especially video, voice, multimedia services such as the rapid development, CMNET networks from the previous data network into a single multi-service integrated digital network. Therefore, this thesis topic selection process for network evolution CMNET how to protect their bearing on the quality of service a variety of.Study of the subject CMNET backbone QOS guarantee there are great practical significance. Efficient use of network resources in the company, based on important business for the company to provide highly reliable service assurance, government, corporate, commercial, and other key customers to ensure the priority of the network, enhance customer stickiness.Meanwhile, telecommunication networks and telecommunication services in the growing trend towards the development of IP-based, CMNET network QOS guarantee is that we must face and solve an important work.QoS based on network quality and customer needs, service models by different users. Typically, QoS provides three service models: do what service model, integrated service model, differentiated service model.On the users, CMNET network QoS through service level agreements (SLA) to quantify guaranteed. Service level agreement (SLA) defines the services provided by operators in the quality, including quality of service parameters, service of process, failure recovery and compensation part of the network service provider (NSP) and the clients signed on a The service level agreement to be reached in the framework of the agreement, the network service provider (NSP) is necessary to provide the appropriate level of service, otherwise the customer will make a financial compensation.QoS of telecommunications operators and Internet service providers continue to pursue. SLA from the customer point of view, the quality of service commitments to quantify (quality of service indicators). SLA can be very general and can be very detailed, but in each SLA in service quality must be precisely defined, otherwise the parties will be on the SLA to measure the quality of what kind of service or performance standards will not be able to reach agreement.QoS is to guarantee the network to carry out new applications, new applications to carry out necessary level of service guarantee. QoS service level agreements and technology are the means of achieving SLA, QoS SLA form can be brought for operators new profit growth point, the network operators to enhance competitiveness within the inline.As the IP protocol to connect their own non-forwarding model, variable length packet format, making QoS guarantees on the relative difficulty in technology. Nevertheless, the industry's point of view from different organizations and applications-driven model, put forward their own QoS architecture, solve some problems Through rapid hardware forwarding and High performance the queue hardware for IP backbone network of high-quality QoS Service guaranteeThe latest IP / MPLS technology can meet other new business on the dry 3G/NGN bearer network QoS requirements. Excess supply OverProvision can guarantee the bandwidth of non-congestion state, the wire-speed forwarding, and fast convergence, especially the MPLS FRR technology ensures minimal network downtime, network outages can be realized under 50ms fast switching capability. Differentiated service line is congested DiffServ guarantee the high priority quality of service, traffic engineering can be the most efficient use of network resources.Different businesses have different QOS characteristics required, as a multi-service bearer network in terms of the backbone network, QoS of the deployment of a number of factors need to be considered to meet the current carrying business of the QOS feature requests of, but also flexible scalability to meet future load of QOS requirements of new business.Deployment of backbone network QOS, it is necessary to consider the network of integrated investment and operating costs and other economic factors, but also consider the technical factors, including the fine flow control Micro-Flow, traffic engineering TE, DiffServ DiffServ, massive bandwidth, the supply of technology.Jilin Mobile CMNET backbone network currently a total of 9 nodes, namely, Changchun, Jilin Province, Yanbian, Siping, Tonghua, Baicheng, Liaoyuan, Matsubara, Hakusan. Among them, the provincial export settings in Changchun, there are two inter-provincial exports, respectively, to Shenyang 1, Shenyang 2, all of a 10G link. The last carries many individuals, families, businesses dedicated Internet business, it is also important 2G/3G data services, an important group, business VPN services, network flow, etc. The main bearing support platform.According CMNET backbone carrying business, as well as the current technology trends, combined with the current situation of network equipment to support QoS capabilities, this application program combined with DifferServ and MPLS QoS guarantee program.Implementation process, the business flow are used special CE, the way network dedicated physical link, as long as the implementation can be based on physical port. Among them, the service flow, signaling flow according to the port to set IP DSCP to EF; Group customer VPN service is based port settings MPLS EXP 3, commitment to the VPN user access rate CAR and PAR agreement; network flow according to the user port settings MPLS EXP 4, but also implemented a flow monitoring, configuration committed access rate CAR and the peak access rate of PAR, over commitment rate less than the peak rate of flow, but be marked as BE type, more than the peak rate of flow of direct disposal. Based on IP DiffServ and MPLS DiffServ QoS features in the underlying principle is to achieve exactly the same, in the queue scheduling, congestion avoidance, traffic shaping, etc. are also the same, the different priorities of messages sent to different QoS queue scheduling, at the same time appropriate bandwidth allocation. Among them, the real-time flow of business in accordance with the strict priority queue (PQ) scheduling approach, eliminating the need for bandwidth, as long as there is traffic on the priority forwarding. Network traffic flow and the bandwidth of the Group VPN configuration in accordance with actual needs, the proposed distribution of the initial configuration 10% and 30% with injustice, the actual ratio of bandwidth allocation can be gradually modified according to the actual operating conditions. Except through the queue scheduling mode, implement relevant business traffic congestion management, we are also customers of the Group VPN configuration operations and network management traffic congestion avoidance mechanism.CMNET multiservice backbone network through QoS implementation of security programs, protect assets and enhance user awareness, improved CMNET backbone of the operation, management. Quantitative QoS indicators improved customer service quality, customer guidance and to explore the potential consumer demand, to achieve "customer benefit" to maximize, and help set up a standardized mechanism of competition, greatly enhance operator competitiveness in the market.The security programs of other provinces in the country CMNET backbone network deployment. Of course, as the QoS technology evolution and development, program Zhong technology used to solve by the other excellent alternative programs, also carry around CMNET backbone of different services also decided to implement in according to local conditions business model for their own implementation plan.