jitter. Through Rate is a comprehensive index to measure the system work, to reflect business connection and lost the case, the corresponding indicator call loss. IP network technology, QoS has made great progress, derived from a variety of QoS technology [1-2], and network QoS solution program there is considerable controversy.Each QoS technology has reasonable scenarios, and can only be the best solution for a particular type of QoS issues, discuss the overall QoS solutions must first IP network QoS risk classification and to determine each type of QoS respective countermeasures. 1 QoS risk classification, IP networks are packet-based statistical multiplexing networks, high bandwidth light load network may burst congestion, thereby causing the problem of IP QoS. Laptop battery because the QoS problem is caused by congestion, so the network QoS risk can be classified in accordance with the length of time congestion in the network for quantitative analysis. The QoS issues if the vast majority of the business network is a crucial impact on the duration in the the microseconds level of congestion, it is this type of network problem known as the microsecond QoS risk. The microsecond level QoS risk using a simple scheduling mechanism to avoid packet loss, e.g. from both interfaces simultaneously arriving packet is output from the same port congestion caused by the router / switch network interface card (NIC) framing cache , and then by the forwarding process scheduling, it can solve the output in the order of these two packages.QualityofService (QoS) technology is the key for IP network technology to be the future general bearer network technology. and longer level the laptop battery network QoS risk can be divided into five grades. HP laptop battery IBM laptop battery Lenovo laptop battery LG laptop battery
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