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Fat AP and Cloud AP V200R008C00 CLI-based Configuration Guide

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Introduction to SAC

Introduction to SAC

Definition

Smart Application Control (SAC) uses the service awareness technology to identify packets of dynamic protocols such as HTTP and RTP by checking Layer 4 to Layer 7 information in the packets. SAC helps implement fine-grained QoS management.

Purpose

As broadband networks become popular, broadband data services develop rapidly. The popularity of various types of services such as P2P services, online games, and VoIP services attracts a large number of customers but also brings great trouble. For example, many P2P applications may abuse network resources. As a result, network congestion occurs. The service awareness technology is used for controlling these illegal applications.

A traditional traffic classification technology only checks content of Layer 4 and lower layers in packets, for example, source address, destination address, source port, destination port, and service type. It cannot analyze applications in packets. Apart from the IP packet header, service awareness can analyze the content of the application layer.

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Updated: 2019-01-11

Document ID: EDOC1000176006

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