06-QoS分册
华为 通用路由平台 VRP5.30 说明书
通用路由平台VRP 操作手册 QoS分册VRP5.30通用路由平台VRP操作手册分册： QoS分册资料版本： 02 (2006-07-18)产品版本： VRP5.30BOM 编码： 31162163华为技术有限公司为客户提供全方位的技术支持。
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前言版本说明本手册对应产品版本为：通用路由平台VRP5.30。
相关手册通用路由平台VRP主要手册及用途如下：手册名称用途《通用路由平台VRP 命令手册》命令手册由8章组成，与操作手册的8个分册相对应，分别介绍了系统、接入、IP业务、IP路由、MPLS、VPN、QoS和安全的命令解释，附录中提供了命令总索引。
《通用路由平台VRP 操作手册》VRP操作手册由8个分册组成，每个分册包含多个章，包括该分册的概述和多个功能特性的配置，最后的附录中提供了该分册中出现的缩略语。
每个功能特性的配置由简介、配置任务（多项）、维护和配置举例组成。
VRP操作手册的8个分册如下：《系统分册》介绍系统管理和可靠性的配置，包括搭建配置环境、基本配置、用户登录、文件管理、系统维护、NTP、SNMP、HWPing、RMON和RMON2、备份中心、BFD、VRRP和HA，并提供缩略语。
Qos中的分类和标记方法
Qos中的分类和标记⽅法Qos的应⽤，什么时候需要⽤qos1、带宽资源不⾜(1)接⼊层增值服务或是限制你的应⽤不同的带宽卖不同的钱，或者是限制带宽让他们厌恶⽽你喜欢的⼀些应⽤不能正常使⽤，⽐如p2p bt 流量。
(2)其他⽹络瓶颈处。
2、设备资源不⾜带宽⾜够，但设备可能有处理不过来的时候。
Qos的作⽤：1、强制重新分配带宽资源坚持公平原则：让所有业务流都能得到⼀定得保障。
也可能倡导两极分化，让重要的越来越重要，不重要的越来越不重要（队列饥饿）2、可能提⾼也可能降低你的服务质量因为他可能倡导两极分化，但愿你不是那些不重要的⾓⾊、你的应⽤不是服务提供商所厌恶的3、QOS不能增加带宽Qos中的分类和标记⽅法：1、Classifier分类(1) ACL ⽤ACL进⾏分类：对具体的源和⽬标的数据流进⾏分类,标准acl可以匹配第三层的数据包，扩展ACL可以匹配第四层的端⼝号。
分类⽅法：先做ACL，然后在分类表⾥match access-group（2）⽤Class-map⾥match数据包的特征DSCP、源地址⽬标地址、COS、⼊站接⼝等进⾏分类R1(config-cmap)#match access-group Access groupany Any packetsclass-map Class mapcos IEEE 802.1Q/ISL class of service/user priority valuesdestination-address Destination addressdiscard-class Discard behavior identifierdscp Match DSCP in IP(v4) and IPv6 packetsfr-de Match on Frame-relay DE bitfr-dlci Match on fr-dlciinput-interface Select an input interface to matchip IP specific valuesmpls Multi Protocol Label Switching specific values（3） CAR Committed Access Rate分类:在接⼝下可以对所有流量进⾏限速，也可以对⾃定义的流量进⾏限速，如下所⽰： R1(config-if)#rate-limit input ?<8000-2000000000> Bits per secondaccess-group Match access listdscp Match dscp valueqos-group Match qos-group ID（4）⽤QoS Policy Propagation via BGP(QPPB)：通过BGP将策略传播到BGP的对等体(5)⽤Route-maps定义分类R1(config)#route-map cisco permit 10R1(config-route-map)#match ?as-path Match BGP AS path listclns CLNS informationcommunity Match BGP community listextcommunity Match BGP/VPN extended community listinterface Match first hop interface of routeip IP specific informationipv6 IPv6 specific informationlength Packet lengthlocal-preference Local preference for routemetric Match metric of routempls-label Match routes which have MPLS labelsnlri BGP NLRI typepolicy-list Match IP policy listroute-type Match route-type of routesource-protocol Match source-protocol of routetag Match tag of route（6）⽤NBAR基于应⽤的识别进⾏分类就是在类别映射表⾥match protocol，nbar可以直接匹配第7层的东西。
神码9816命令手册_06_QOS、PBR及基于流的重定向命令
目录第1章 QOS和IPV4/IPV6 PBR命令............................................1-11.1 accounting......................................................................................1-11.2 class.................................................................................................1-11.3 class-map........................................................................................1-21.4 clear mls qos statistics..................................................................1-21.5 match...............................................................................................1-21.6 mls qos aggregate-policy..............................................................1-31.7 mls qos cos.....................................................................................1-41.8 mls qos map....................................................................................1-41.9 mls qos queue algorithm...............................................................1-61.10 mls qos queue wrr weight............................................................1-61.11 mls qos queue wdrr weight..........................................................1-71.12 mls qos queue bandwidth............................................................1-71.13 mls qos trust.................................................................................1-81.14 policy.............................................................................................1-81.15 policy aggregate...........................................................................1-91.16 policy-map...................................................................................1-101.17 set................................................................................................1-101.18 service-policy input....................................................................1-111.19 service-policy input vlan............................................................1-111.20 show class-map..........................................................................1-121.21 show policy-map.........................................................................1-121.22 show mls qos aggregate-policy................................................1-131.23 show mls qos interface..............................................................1-141.24 show mls qos maps....................................................................1-161.25 show mls qos vlan......................................................................1-18第2章 MPLS QOS命令.............................................................2-12.1 match...............................................................................................2-12.2 mls qos trust exp............................................................................2-12.3 mls qos map....................................................................................2-12.4 show mls qos maps........................................................................2-2第3章基于流的重定向命令.......................................................3-13.1 access-group redirect to interface ethernet.................................3-13.2 show flow-based-redirect..............................................................3-1第1章 QoS和IPv4/IPv6 PBR命令1.1accounting命令：accountingno accounting功能：为分类后的流量设置统计功能。
VRP5.3操作手册 QoS分册12-第12章 VLAN QoS配置
目录第12章 VLAN QoS配置......................................................................................................12-112.1 简介................................................................................................................................12-112.2 配置VLAN QoS.............................................................................................................12-212.2.1 建立配置任务.......................................................................................................12-212.2.2 配置匹配VLAN帧优先级的规则.........................................................................12-312.2.3 配置VLAN优先级的值........................................................................................12-312.3 VLAN QoS配置举例......................................................................................................12-3第12章 VLAN QoS配置本章介绍在VLAN网络中实现端到端的QoS的方法。
QOS原理及其应用教材
IP QoS 的引入（续）
解决这个问题的一个途径是增加网络的带宽，但带宽的增加毕 竟有限，而且代价昂贵，它只能从一定程度上缓解这个问题。
保证服务质量的另一个途径是：
执行队列机制进行拥塞管理：如FIFO、PQ、CQ、WFQ、 CBWFQ
执行随机早期检测进行拥塞避免
执行通过流量整形进行流量平滑
执行约定访问速度进行流量限制
的
流量整形
流量整形（shaping）是一种主动调整流 量输出速率的措施。一个典型的应用是 基于下游网络结点的car的指标控制流量 的输出
流量整形和流量监管的主要区别
1、流量整形对流量监管中需要丢弃的 包进行缓存－－通常放入缓冲区或队列 如放入wfq队列。
2、整形可能增加延时，而监管几乎不 引入额外的延时
RFC1122 RFC1349
B Z
Ip type os service RFC791
标准的PHB
PHB：DS节点对待定的行为集合（behabior aggregate）使用的转发行为
DS节点通过判别分组头中的DS域来执行PHB。 PHB的种类：
默认：即best effort，DS节点应为这种PHB预 留最小带宽，默认PHB对应的DS编码 <000000>. 类别选择：主要用于与过去的IP头的 percedence处理兼容，DS编码<xxx000>.
high queue middle queue
发送的分组
normal queue
分类
bottom queue
调度 发送队列
队列机制（续）－－cq队列
CQ用户可配置队列间占用的带宽比例关系
vlanid （12bit）
DIFFSERV的业务分类和调整
华为 QoS技术白皮书
QoS 技术白皮书
文档版本 发布日期
01 2013-05-25
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S 系列交换机 QoS 技术白皮书
目录
目录
1 特性简介..........................................................................................................................................1
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1.1 什么是 QoS ................................................................................................................................................................. 1 1.2 QoS 度量指标 .............................................................................................................................................................. 2 1.2.1 带宽/吞吐量 ............................................................................................................................................................. 2 1.2.2 时延 .......................................................................................................................................................................... 3 1.2.3 时延变化（抖动） .................................................................................................................................................. 3 1.2.4 丢包率 ...................................................................................................................................................................... 4 1.3 常见业务 QoS 指标 .................................................................................................................................................... 5
VRP5.3操作手册 QoS分册07-第7章 链路效率机制配置
通用路由平台 VRP 操作手册 QoS分册目录目录第7章链路效率机制配置.......................................................................................................7-17.1 简介....................................................................................................................................7-17.1.1 IP报文头压缩..........................................................................................................7-17.1.2 链路分片与交叉.......................................................................................................7-27.2 配置IP报文头压缩.............................................................................................................7-37.2.1 建立配置任务...........................................................................................................7-37.2.2 启动IP头压缩........................................................................................................7-47.2.3 配置TCP头压缩的最大连接数................................................................................7-47.2.4 配置RTP头压缩的最大连接数................................................................................7-57.2.5 检查配置结果...........................................................................................................7-57.3 配置链路分片和交叉..........................................................................................................7-57.3.1 建立配置任务...........................................................................................................7-57.3.2 使能LFI..................................................................................................................7-67.3.3 配置LFI分片的最大时延........................................................................................7-67.3.4 配置MP绑定带宽....................................................................................................7-67.3.5 启动VT接口动态QoS的限速功能.........................................................................7-77.4 维护....................................................................................................................................7-77.4.1 调试IP头压缩.........................................................................................................7-77.4.2 清空压缩运行信息....................................................................................................7-8第7章链路效率机制配置VRP提供了两种链路效率机制：IP报文头压缩协议IPHC（IP HeaderCompression）和链路分片与交叉LFI（Link Fragmentation and Interleaving）。
通用路由平台 VRP 说明书 QoS 分册
目录第1章 QoS简介.....................................................................................................................1-11.1 简介....................................................................................................................................1-11.2 传统的分组投递业务..........................................................................................................1-11.3 新业务引发的新需求..........................................................................................................1-21.4 拥塞的产生、影响和对策...................................................................................................1-21.4.1 拥塞的产生..............................................................................................................1-21.4.2 拥塞的影响..............................................................................................................1-31.4.3 对策.........................................................................................................................1-31.5 几种主要的流量管理技术...................................................................................................1-4第2章流量监管和流量整形配置............................................................................................2-12.1 简介....................................................................................................................................2-12.1.1 流量监管..................................................................................................................2-12.1.2 流量整形..................................................................................................................2-32.1.3 接口限速..................................................................................................................2-52.2 配置流量监管.....................................................................................................................2-62.2.1 建立配置任务...........................................................................................................2-62.2.2 配置流量监管列表....................................................................................................2-72.2.3 配置流量监管策略....................................................................................................2-72.2.4 检查配置结果...........................................................................................................2-72.3 配置流量整形.....................................................................................................................2-82.3.1 建立配置任务...........................................................................................................2-82.3.2 配置流量整形...........................................................................................................2-82.3.3 检查配置结果...........................................................................................................2-92.4 配置接口限速.....................................................................................................................2-92.4.1 建立配置任务...........................................................................................................2-92.4.2 配置接口限速.........................................................................................................2-102.4.3 检查配置结果.........................................................................................................2-102.5 配置举例...........................................................................................................................2-102.5.1 流量监管配置示例..................................................................................................2-102.5.2 流量整形配置示例..................................................................................................2-12第3章拥塞管理配置..............................................................................................................3-13.1 简介....................................................................................................................................3-13.1.1 拥塞管理策略...........................................................................................................3-13.1.2 拥塞管理技术的对比................................................................................................3-53.2 配置先进先出队列..............................................................................................................3-63.2.1 建立配置任务...........................................................................................................3-63.2.2 配置FIFO队列的长度.............................................................................................3-73.3 配置优先队列.....................................................................................................................3-73.3.1 建立配置任务...........................................................................................................3-73.3.2 配置优先列表...........................................................................................................3-83.3.3 配置缺省队列...........................................................................................................3-93.3.4 配置队列长度...........................................................................................................3-93.3.5 在接口上应用优先列表组.........................................................................................3-93.3.6 检查配置结果.........................................................................................................3-103.4 配置定制队列...................................................................................................................3-103.4.1 建立配置任务.........................................................................................................3-103.4.2 配置定制列表.........................................................................................................3-113.4.3 配置缺省队列.........................................................................................................3-113.4.4 配置队列长度.........................................................................................................3-123.4.5 配置各队列每次轮询发送的字节数........................................................................3-123.4.6 在接口上应用定制列表..........................................................................................3-123.4.7 检查配置结果.........................................................................................................3-133.5 配置加权公平队列............................................................................................................3-133.5.1 建立配置任务.........................................................................................................3-133.5.2 配置加权公平队列..................................................................................................3-143.5.3 检查配置结果.........................................................................................................3-143.6 配置RTP队列..................................................................................................................3-143.6.1 建立配置任务.........................................................................................................3-143.6.2 在接口上应用RTP队列.........................................................................................3-153.6.3 配置最大预留带宽..................................................................................................3-163.6.4 检查配置结果.........................................................................................................3-163.7 优先队列配置举例............................................................................................................3-16第4章拥塞避免配置..............................................................................................................4-14.1 简介....................................................................................................................................4-14.2 配置WRED........................................................................................................................4-34.2.1 建立配置任务...........................................................................................................4-34.2.2 启用WRED............................................................................................................4-44.2.3 配置WRED计算平均队长的指数............................................................................4-44.2.4 配置WRED各优先级参数.......................................................................................4-44.2.5 检查配置结果...........................................................................................................4-5第5章基于类的QoS配置.....................................................................................................5-15.1 简介....................................................................................................................................5-15.1.1 流分类......................................................................................................................5-25.1.2 标记.........................................................................................................................5-25.1.3 DSCP......................................................................................................................5-35.1.4 标准的PHB.............................................................................................................5-35.1.5 基于类的队列CBQ（Class Based Queue）..........................................................5-4 5.2 配置流分类.........................................................................................................................5-45.2.1 建立配置任务...........................................................................................................5-45.2.2 在类视图中定义匹配类的规则.................................................................................5-55.2.3 检查配置结果...........................................................................................................5-6 5.3 配置基于类的标记动作.......................................................................................................5-75.3.1 建立配置任务...........................................................................................................5-75.3.2 配置标记报文的DSCP值........................................................................................5-85.3.3 配置标记报文的IP优先级值...................................................................................5-85.3.4 配置标记FR报文的DE标志位的值........................................................................5-85.3.5 配置标记ATM信元的CLP标志位的值...................................................................5-85.3.6 配置标记MPLS EXP域的值...................................................................................5-95.3.7 配置标记VLAN优先级8021P的值.........................................................................5-9 5.4 配置基于类的流量监管和流量整形动作.............................................................................5-95.4.1 建立配置任务...........................................................................................................5-95.4.2 配置基于类的流量监管动作...................................................................................5-105.4.3 配置基于类的流量整形动作...................................................................................5-105.4.4 检查配置结果.........................................................................................................5-11 5.5 配置基于类的流量限速动作..............................................................................................5-115.5.1 建立配置任务.........................................................................................................5-115.5.2 配置基于类的流量限速动作...................................................................................5-125.5.3 检查配置结果.........................................................................................................5-12 5.6 配置CBQ动作.................................................................................................................5-125.6.1 建立配置任务.........................................................................................................5-125.6.2 配置AF..................................................................................................................5-135.6.3 配置WFQ..............................................................................................................5-135.6.4 配置最大队列长度..................................................................................................5-145.6.5 配置EF.................................................................................................................5-145.6.6 检查配置结果.........................................................................................................5-14 5.7 配置基于类的WRED动作...............................................................................................5-155.7.1 建立配置任务.........................................................................................................5-155.7.2 配置基于类的WRED丢弃方式.............................................................................5-155.7.3 配置基于类的WRED的丢弃参数.........................................................................5-165.7.4 检查配置结果.........................................................................................................5-16 5.8 配置流量策略...................................................................................................................5-175.8.1 建立配置任务.........................................................................................................5-175.8.2 定义策略并进入策略视图.......................................................................................5-175.8.3 为流分类指定流动作..............................................................................................5-185.8.4 检查配置结果.........................................................................................................5-185.9 配置策略嵌套动作............................................................................................................5-185.9.1 建立配置任务.........................................................................................................5-185.9.2 配置策略嵌套动作.................................................................................................5-195.9.3 检查配置结果.........................................................................................................5-205.10 应用策略.........................................................................................................................5-205.10.1 建立配置任务.......................................................................................................5-205.10.2 应用策略..............................................................................................................5-215.10.3 检查配置结果.......................................................................................................5-215.11 调试CBQ.......................................................................................................................5-215.12 配置举例.........................................................................................................................5-225.12.1 基于类的队列配置举例........................................................................................5-225.12.2 策略嵌套配置举例...............................................................................................5-26第6章 QPPB配置..................................................................................................................6-16.1 简介....................................................................................................................................6-16.2 配置QPPB.........................................................................................................................6-26.2.1 建立配置任务...........................................................................................................6-26.2.2 配置路由策略...........................................................................................................6-36.2.3 应用路由策略...........................................................................................................6-46.2.4 定义类及类的匹配规则............................................................................................6-46.2.5 配置基于类的动作....................................................................................................6-46.2.6 定义流量策略...........................................................................................................6-46.2.7 在接口下应用流量策略............................................................................................6-46.2.8 在接口下应用QPPB................................................................................................6-56.2.9 检查配置结果...........................................................................................................6-56.3 QPPB配置举例..................................................................................................................6-56.4 故障排除...........................................................................................................................6-11第7章链路效率机制配置.......................................................................................................7-17.1 简介....................................................................................................................................7-17.1.1 IP报文头压缩..........................................................................................................7-17.1.2 链路分片与交叉.......................................................................................................7-27.2 配置IP报文头压缩.............................................................................................................7-37.2.1 建立配置任务...........................................................................................................7-37.2.2 启动IP头压缩........................................................................................................7-47.2.3 配置TCP头压缩的最大连接数................................................................................7-47.2.4 配置RTP头压缩的最大连接数................................................................................7-57.2.5 检查配置结果...........................................................................................................7-57.3 配置链路分片和交叉..........................................................................................................7-57.3.1 建立配置任务...........................................................................................................7-57.3.2 使能LFI..................................................................................................................7-67.3.3 配置LFI分片的最大时延........................................................................................7-67.3.4 配置MP绑定带宽....................................................................................................7-67.3.5 启动VT接口动态QoS的限速功能.........................................................................7-77.4 维护....................................................................................................................................7-77.4.1 调试IP头压缩.........................................................................................................7-77.4.2 清空压缩运行信息....................................................................................................7-8第8章帧中继QoS配置.........................................................................................................8-18.1 简介....................................................................................................................................8-18.1.1 帧中继class............................................................................................................8-28.1.2 实现的帧中继QoS...................................................................................................8-28.2 配置帧中继流量整形..........................................................................................................8-58.2.1 建立配置任务...........................................................................................................8-58.2.2 配置帧中继流量整形参数.........................................................................................8-68.2.3 将整形参数应用到接口............................................................................................8-78.2.4 使能帧中继流量整形................................................................................................8-78.3 配置帧中继流量监管..........................................................................................................8-88.3.1 建立配置任务...........................................................................................................8-88.3.2 配置帧中继流量监管参数.........................................................................................8-98.3.3 将流量监管参数应用到接口.....................................................................................8-98.3.4 使能帧中继流量监管................................................................................................8-98.4 配置帧中继接口的拥塞管理..............................................................................................8-108.4.1 建立配置任务.........................................................................................................8-108.4.2 配置帧中继接口的拥塞管理策略............................................................................8-108.5 配置帧中继虚电路的拥塞管理..........................................................................................8-118.5.1 建立配置任务.........................................................................................................8-118.5.2 配置帧中继虚电路的拥塞管理策略........................................................................8-128.5.3 配置虚电路的DE规则...........................................................................................8-128.5.4 将拥塞策略应用到虚电路.......................................................................................8-138.6 配置帧中继通用队列........................................................................................................8-138.6.1 建立配置任务.........................................................................................................8-138.6.2 配置帧中继通用队列..............................................................................................8-148.6.3 将通用队列应用到帧中继接口...............................................................................8-158.6.4 将通用队列应用到帧中继虚电路............................................................................8-158.6.5 检查配置结果.........................................................................................................8-158.7 配置帧中继PVC PQ队列................................................................................................8-168.7.1 建立配置任务.........................................................................................................8-168.7.2 配置帧中继接口的PVC PQ队列...........................................................................8-168.7.3 配置帧中继虚电路PVC PQ队列等级....................................................................8-178.8 配置帧中继分片................................................................................................................8-188.8.1 建立配置任务.........................................................................................................8-188.8.2 配置帧中继分片.....................................................................................................8-198.8.3 将帧中继分片应用到虚电路...................................................................................8-198.8.4 检查配置结果.........................................................................................................8-198.9 调试帧中继QoS...............................................................................................................8-208.10 配置举例.........................................................................................................................8-208.10.1 帧中继流量整形配置举例.....................................................................................8-208.10.2 帧中继分片配置举例............................................................................................8-22第9章 ATM QoS配置............................................................................................................9-19.1 简介....................................................................................................................................9-19.2 配置ATM PVC的拥塞管理................................................................................................9-29.2.1 建立配置任务...........................................................................................................9-29.2.2 配置ATM PVC的FIFO队列...................................................................................9-39.2.3 配置ATM PVC的CQ队列.....................................................................................9-49.2.4 配置ATM PVC的PQ队列......................................................................................9-49.2.5 配置ATM PVC的WFQ队列..................................................................................9-49.2.6 应用CBQ................................................................................................................9-49.2.7 配置ATM PVC的RTPQ队列.................................................................................9-59.2.8 配置ATM PVC的预留带宽.....................................................................................9-59.3 配置ATM PVC的拥塞避免................................................................................................9-59.3.1 建立配置任务...........................................................................................................9-59.3.2 配置ATM PVC的拥塞避免.....................................................................................9-69.4 配置ATM接口的流量监管.................................................................................................9-79.4.1 建立配置任务...........................................................................................................9-79.4.2 配置ATM接口的流量监管.......................................................................................9-79.5 配置ATM接口基于类的策略..............................................................................................9-89.5.1 建立配置任务...........................................................................................................9-89.5.2 配置ATM接口基于类的策略...................................................................................9-99.6 配置PVC业务映射............................................................................................................9-99.6.1 建立配置任务...........................................................................................................9-99.6.2 配置PVC-Group内PVC的IP优先级..................................................................9-109.6.3 为PVC-Group内创建的PVC配置流量参数.........................................................9-109.7 Multilink PPPoA QoS配置...............................................................................................9-119.7.1 建立配置任务.........................................................................................................9-119.7.2 创建Multilink PPPoA虚拟接口模板......................................................................9-129.7.3 创建PPPoA虚拟接口模板并绑定到Multilink PPPoA...........................................9-129.7.4 配置PPPoA应用...................................................................................................9-129.7.5 在Multilink PPPoA虚拟接口模板上应用QoS策略...............................................9-129.7.6 重启PVC...............................................................................................................9-139.8 配置举例...........................................................................................................................9-139.8.1 ATM PVC上的CBQ配置举例..............................................................................9-13。
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QoS分册索引手册版本20091105-C-1.03产品版本Release 6300系列QoS分册简介QoS分册内容如下：手册名称手册说明QoS QoS即服务质量，本文主要描述了：z QoS基本介绍z流分类、流量监管、流量整形和端口限速z QoS策略z拥塞管理z拥塞避免z优先级映射z流镜像z EPON系统的QoS目录1 QoS简介............................................................................................................................................1-11.1 概述...................................................................................................................................................1-11.2 传统的分组转发业务..........................................................................................................................1-11.3 新业务引发的新需求..........................................................................................................................1-11.4 拥塞的产生、影响和对策..................................................................................................................1-11.4.1 拥塞的产生..............................................................................................................................1-11.4.2 拥塞的影响..............................................................................................................................1-21.4.3 对策........................................................................................................................................1-21.5 几种主要的流量管理技术..................................................................................................................1-32 流分类、流量监管、流量整形和端口限速配置...................................................................................2-12.1 流量监管、流量整形和端口限速简介................................................................................................2-12.2 流量评估与令牌桶.............................................................................................................................2-12.2.1 令牌桶的特点..........................................................................................................................2-12.2.2 用令牌桶评估流量...................................................................................................................2-12.2.3 复杂评估.................................................................................................................................2-22.2.4 流量监管.................................................................................................................................2-22.2.5 流量整形.................................................................................................................................2-32.2.6 端口限速.................................................................................................................................2-32.3 流量整形/端口限速配置.....................................................................................................................2-42.3.1 配置流量整形..........................................................................................................................2-42.3.2 配置端口限速..........................................................................................................................2-52.3.3 流量整形/端口限速显示..........................................................................................................2-53 QoS策略配置.....................................................................................................................................3-13.1 QoS策略简介.....................................................................................................................................3-13.2 QoS策略的配置过程..........................................................................................................................3-13.2.1 配置准备.................................................................................................................................3-13.2.2 定义类.....................................................................................................................................3-13.2.3 定义流行为..............................................................................................................................3-33.2.4 定义策略.................................................................................................................................3-43.2.5 应用策略.................................................................................................................................3-43.3 通过QoS策略实现策略路由...............................................................................................................3-83.3.1 通过QoS策略实现策略路由简介.............................................................................................3-83.3.2 配置通过QoS策略实现策略路由.............................................................................................3-83.3.3 通过QoS策略实现策略路由典型配置举例............................................................................3-103.4 QoS策略显示和维护........................................................................................................................3-124 拥塞管理............................................................................................................................................4-14.1 拥塞管理简介.....................................................................................................................................4-14.2 拥塞管理策略.....................................................................................................................................4-14.3 配置SP队列.......................................................................................................................................4-34.3.1 配置过程.................................................................................................................................4-34.3.2 配置举例.................................................................................................................................4-44.4 配置WRR队列...................................................................................................................................4-44.4.1 配置过程.................................................................................................................................4-44.4.2 配置举例.................................................................................................................................4-44.5 配置WFQ队列...................................................................................................................................4-54.5.1 配置过程.................................................................................................................................4-54.5.2 配置举例.................................................................................................................................4-54.6 配置SP+WRR队列............................................................................................................................4-64.6.1 配置过程.................................................................................................................................4-64.6.2 配置举例.................................................................................................................................4-64.7 拥塞管理显示.....................................................................................................................................4-75 拥塞避免............................................................................................................................................5-15.1 拥塞避免简介.....................................................................................................................................5-15.1.1 传统的丢包策略......................................................................................................................5-15.1.2 RED与WRED.........................................................................................................................5-15.2 配置WRED........................................................................................................................................5-15.2.1 配置准备.................................................................................................................................5-25.2.2 配置过程.................................................................................................................................5-25.2.3 配置举例.................................................................................................................................5-25.3 WRED显示........................................................................................................................................5-26 优先级映射........................................................................................................................................6-16.1 报文优先级........................................................................................................................................6-16.1.1 优先级.....................................................................................................................................6-16.2 优先级映射简介.................................................................................................................................6-36.3 配置优先级映射关系..........................................................................................................................6-56.3.1 配置准备.................................................................................................................................6-56.3.2 配置过程.................................................................................................................................6-56.3.3 配置举例.................................................................................................................................6-56.4 端口优先级配置.................................................................................................................................6-66.4.1 配置准备.................................................................................................................................6-66.4.2 配置过程.................................................................................................................................6-66.4.3 配置举例.................................................................................................................................6-66.5 优先级信任模式配置..........................................................................................................................6-66.5.1 配置准备.................................................................................................................................6-76.5.2 配置过程.................................................................................................................................6-76.5.3 配置举例.................................................................................................................................6-76.6 优先级映射显示.................................................................................................................................6-77 EPON系统的QoS..............................................................................................................................7-17.1 EPON系统的QoS..............................................................................................................................7-17.1.1 对上行数据采用的QoS功能....................................................................................................7-17.1.2 对下行数据采用的QoS功能....................................................................................................7-27.2 EPON系统QoS的配置.......................................................................................................................7-27.2.1 EPON系统的QoS配置任务简介..............................................................................................7-27.2.2 OLT设备侧的QoS功能配置....................................................................................................7-3 7.2.3 ONU设备侧的QoS功能配置...................................................................................................7-5 7.2.4 UNI端口优先级重标记配置举例..............................................................................................7-71 QoS简介1.1 概述QoS（Quality of Service，服务质量）是各种存在服务供需关系的场合中普遍存在的概念，它评估服务方满足客户服务需求的能力。