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Network quality of service is becoming increasingly important in the increasingly competitive telecommunications market , network service providers to improve their competitiveness is no longer just a technology leader , at the same time pay more attention to the improvement of the level of service quality . SLA (Service Level Agreement , Service Level Agreement) proposed to let the two sides to reach a consensus for service quality , priority and other factors . SLA as a service provider to adjust the level of service quality , improve user satisfaction of service effective tool , but also the users monitor service providers to provide services correctly , a powerful tool to protect their own interests . As the core of the next-generation networks , IP networks based on packet switching , best-effort characteristics , making it far better than traditional circuit-switched network as easy to achieve in service quality assurance , therefore need to put effective SLA management for IP networks more research , especially for the statistical characteristics of the IP network performance parameters and how to select the more effective SLA parameters and indicators is particularly important , it is also more difficult . In this discussion , will be started from the IP network performance parameter analysis, combined with the model of the SLA parameters , the detailed discussion of the selection of the SLA parameters in the IP network , measuring and level mapping . Services provided by the IP network can be divided into three categories: network connectivity services , managed services and integrated services , network performance for different services concern is not the same , the selected SLA parameters will be different , listed in part for reference parameters. QoS level principle of division of SLA level mapping , the main reference in accordance with the real-time , near real-time , the distinction between traditional business classification . In addition , the article also involves the Web developers display module , the module function module is a the SLA network performance real-time monitoring system , the part of the innovative work in the search algorithm , developed to take advantage of some of the important factors indirectly reflects the topology of SLA SLA-based topology display and provides important network performance parameters charts .
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