10-QoS操作(NE40)

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第1章 IP QoS简介.................................................................................................................. 1-1

1.1导引................................................................................................................................... 1-1

1.1.1概述 ........................................................................................................................ 1-1

1.1.2传统的IP分组投递服务.......................................................................................... 1-1

1.1.3新的业务和需求 ...................................................................................................... 1-1

1.1.4 拥塞的产生、影响及对策......................................................................................... 1-2

1.2 几种主要的流量管理措施 ................................................................................................... 1-4

1.2.1流分类..................................................................................................................... 1-5

1.2.2 流量监管和流量整形................................................................................................ 1-5

1.2.3拥塞管理 ................................................................................................................. 1-8

1.2.4拥塞避免 ............................................................................................................... 1-11

1.3 IP QoS模型 ..................................................................................................................... 1-13

1.3.1 Integrated Service模型......................................................................................... 1-13

1.3.2 Differentiated Service 模型.................................................................................... 1-14

1.3.3 底层网络的支持及不同IP QoS模型的互操作性 ................................................... 1-14第2章 Diff-Serv体系模型 ........................................................................................................ 2-1

2.1引言................................................................................................................................... 2-1

2.2 Diff-Serv网络构成.............................................................................................................. 2-2

2.3 Diff-Serv服务类别定义 ...................................................................................................... 2-2

2.3.1 DS field和DS codepoint ......................................................................................... 2-2

2.3.2标准的PHB ............................................................................................................ 2-3

2.3.3推荐的DSCP编码点 .............................................................................................. 2-4

2.4实现Diff-Serv的相关技术 ................................................................................................. 2-5

2.4.1流量调整的依据 ...................................................................................................... 2-5

2.4.2流分类..................................................................................................................... 2-6

2.4.3流量监管与整形 ...................................................................................................... 2-6

2.4.4 srTCM与trTCM算法 .............................................................................................. 2-6

2.4.5拥塞管理和避免 ...................................................................................................... 2-8第3章 Diff-Serv配置................................................................................................................ 3-1

3.1 NE40系列通用交换路由器QoS的实现简介...................................................................... 3-1

3.2 Diff-Serv配置..................................................................................................................... 3-1

3.2.1 使能Diff-Serv .......................................................................................................... 3-2

3.2.2定义用于流量管理的基础参数................................................................................. 3-2

3.2.3流量监管配置.......................................................................................................... 3-6

3.2.4流量整形配置.......................................................................................................... 3-7