H3C-QOS队列调度

H3C-5120交换机QoS配置1. 介绍QoS（Quality of Service）是为了保证网络传输中的数据流能满足特定的服务需求而采取的一系列技术措施。

本文档将介绍如何在H3C-5120交换机上进行QoS配置。

2. 配置步骤步骤1：登录交换机使用管理员账户登录到交换机的CLI界面。

步骤2：创建QoS策略使用以下命令创建一个新的QoS策略：<H3C-5120> system-view[H3C-5120] qos policy policy1[H3C-5120-policy-qos-policy-policy1] quit步骤3：配置流量分类使用以下命令创建流量分类，并将其应用于刚创建的QoS策略：[H3C-5120] traffic classifier classifier1[H3C-5120-classifier-classifier1] if-match ipv4 source-address10.0.0.0 0.255.255.255[H3C-5120-classifier-classifier1] quit[H3C-5120] qos policy policy1[H3C-5120-policy-qos-policy-policy1] classifier classifier1 behavior behavior1[H3C-5120-policy-qos-policy-policy1-classifier-classifier1-behavior-behavior1] quit步骤4：配置流量行为使用以下命令配置流量行为，并将其应用于刚创建的QoS策略：[H3C-5120] traffic behavior behavior1[H3C-5120-behavior-behavior1] remark dscp 24[H3C-5120-behavior-behavior1] quit步骤5：应用QoS策略使用以下命令将QoS策略应用于某个接口：[H3C-5120] interface gigabitethernet 1/0/1[H3C-5120-GigabitEthernet1/0/1] qos apply policy policy1 inbound[H3C-5120-GigabitEthernet1/0/1] quit步骤6：保存配置使用以下命令保存配置并退出：[H3C-5120] save[H3C-5120] quit3. 总结通过以上配置步骤，我们可以在H3C-5120交换机上成功配置QoS。

H3C交换机常用配置命令一、用户配置<H3C>system-view[H3C]super password H3C 设置用户分级密码[H3C]undo super password 删除用户分级密码[H3C]localuser bigheap 123456 1 Web网管用户设置,1（缺省）为管理级用户,缺省admin,admin [H3C]undo localuser bigheap 删除Web网管用户[H3C]user-interface aux 0 只支持0[H3C-Aux]idle-timeout 2 50 设置超时为2分50秒,若为0则表示不超时,默认为5分钟[H3C-Aux]undo idle-timeout 恢复默认值[H3C]user-interface vty 0 只支持0和1[H3C-vty]idle-timeout 2 50 设置超时为2分50秒,若为0则表示不超时,默认为5分钟[H3C-vty]undo idle-timeout 恢复默认值[H3C-vty]set authentication password 123456 设置telnet密码,必须设置[H3C-vty]undo set authentication password 取消密码[H3C]display users 显示用户[H3C]display user-interface 显示用户界面状态二、系统IP设置[H3C]vlan 20[H3C]management-vlan 20[H3C]interface vlan-interface 20 创建并进入管理VLAN[H3C]undo interface vlan-interface 20 删除管理VLAN接口[H3C-Vlan-interface20]ip[H3C-Vlan-interface20]undo ip address 删除IP地址[H3C-Vlan-interface20]ip[H3C-Vlan-interface20]undo ip gateway[H3C-Vlan-interface20]shutdown 关闭接口[H3C-Vlan-interface20]undo shutdown 开启[H3C]display ip 显示管理VLAN接口IP的相关信息[H3C]display interface vlan-interface 20 查看管理VLAN的接口信息<H3C>debugging ip 开启IP调试功能<H3C>undo debugging ip三.DHCP客户端配置[H3C-Vlan-interface20]ip address dhcp-alloc 管理VLAN接口通过DHCP方式获取IP地址[H3C-Vlan-interface20]undo ip address dhcp-alloc 取消[H3C]display dhcp 显示DHCP客户信息<H3C>debugging dhcp-alloc 开启DHCP调试功能<H3C>undo debugging dhcp-alloc四.端口配置[H3C]interface Ethernet0/3[H3C-Ethernet0/3]shutdown[H3C-Ethernet0/3]speed 100 速率,可为10,100,1000和auto(缺省)[H3C-Ethernet0/3]duplex full 双工,可为half,full和auto(缺省) 光口和汇聚后不能配置[H3C-Ethernet0/3]flow-control 开启流控,默认为关闭[H3C-Ethernet0/3]broadcast-suppression 20 设置抑制广播百分比为20%,可取5,10,20,100,缺省为100,同时组播和未知单播也受此影响[H3C-Ethernet0/3]loopback internal 内环测试[H3C-Ethernet0/3]loopback external 外环测试,需插接自环头,必须为全双工或者自协商模式[H3C-Ethernet0/3]port link-type trunk 设置链路的类型为trunk,可为access(缺省),trunk[H3C-Ethernet0/3]port trunk pvid vlan 20 设置20为该trunk的缺省VLAN,默认为1 (trunk线路两端的PVID 必须一致)[H3C-Ethernet0/3]port access vlan 20 将当前access端口加入指定的VLAN[H3C-Ethernet0/3]port trunk permit vlan all 允许所有的VLAN通过当前的trunk端口,可多次使用该命令[H3C-Ethernet0/3]mdi auto 设置以太端口为自动监测,normal(缺省)为直通线,across为交叉线[H3C]link-aggregation Ethernet 0/1 to Ethernet 0/4 将1-4口加入汇聚组,1为主端口,两端需要同时配置,设置了端口镜像以及端口隔离的端口无法汇聚[H3C]undo link-aggregation Ethernet 0/1 删除该汇聚组[H3C]link-aggregation mode egress 配置端口汇聚模式为根据目的MAC地址进行负荷分担,可选为ingress,egress和both,缺省为both[H3C]monitor-port Ethernet 0/2 将该端口设置为镜像端口,必须先设置镜像端口,删除时必须先删除被镜像端口而且它们不能同在一个端口,该端口不能在汇聚组中,设置新镜像端口时,新取代旧,被镜像不变[H3C]mirroring-port Ethernet 0/3 to Ethernet 0/4 both 将端口3和4设置为被镜像端口,both为同时监控接收和发送的报文,inbound表示仅监控接收的报文,outbound表示仅监控发送的报文[H3C]display mirror[H3C]display interface Ethernet 0/3<H3C>reset counters 清除所有端口的统计信息[H3C]display link-aggregation Ethernet 0/3 显示端口汇聚信息[H3C-Ethernet0/3]virtual-cable-test 诊断该端口的电路状况五.VLAN配置[H3C]vlan 2[H3C]undo vlan all 删除除缺省VLAN外的所有VLAN,缺省VLAN不能被删除[H3C-vlan2]port Ethernet 0/4 to Ethernet 0/7 将4到7号端口加入到VLAN2中,此命令只能用来加access端口不能用来增加trunk或者hybrid端口[H3C-vlan2]port-isolate enable 打开VLAN内端口隔离特性,不能二层转发,默认不启用该功能[H3C-Ethernet0/4]port-isolate uplink-port vlan 2 设置4为VLAN2的隔离上行端口,用于转发二层数据,只能配置一个上行端口,若为trunk,则建议允许所有VLAN通过,隔离不能与汇聚同时配置[H3C]display vlan all 显示所有VLAN的详细信息S1550E支持基于端口的VLAN,通过创建不同的user-group来实现,一个端口可以属于多个user-group,不属于同一个user-group的端口不能互相通信,最多支持50个user-group[H3C]user-group 20 创建user-group 20,默认只存在user-group 1[H3C-UserGroup20]port Ethernet 0/4 to Ethernet 0/7 将4到7号端口加入到VLAN20中,初始时都属于user-grou 1中[H3C]display user-group 20 显示user-group 20的相关信息六.集群配置S2100只能作为成员交换机加入集群中,加入后系统名改为"集群名_成员编号.原系统名"的格式.即插即用功能通过两个功能实现: 集群管理协议MAC组播地址协商和管理VLAN协商[H3C]cluster enable 启用群集功能,缺省为启用[H3C]cluster 进入群集视图[H3C-cluster]administrator-address H-H-H name switch H-H-H为命令交换机的MAC,加入switch集群[]undo administrator-address 退出集群[H3C]display cluster 显示集群信息[H3C]management-vlan 2 集群报文只能在管理VLAN中转发,同一集群需在同一个管理VLAN中,需在建立集群之前指定管理VLAN<H3C>debugging cluster七.QoS配置QoS配置步骤:设置端口的优先级,设置交换机信任报文的优先级方式,队列调度,端口限速[H3C-Ethernet0/3]priority 7 设置端口优先级为7,默认为0[H3C]priority-trust cos 设置交换机信任报文的优先级方式为cos优先级,缺省值),还可以设为dscp方式(dscp 优先级方式)[H3C]queue-scheduler hq-wrr 2 4 6 8 设置队列调度算法为HQ-WRR(默认为WRR),权重为2,4,6,8[H3C-Ethernet0/3]line-rate inbound 29 将端口进口速率限制为2Mbps,取1-28时,速率为rate*8*1024/125,即64,128,192...;29-127时,速率为(rate-27)*1024,即2M,3M,4M...100M,千兆时可继续往下取,128-240时,速率为(rate-115)*8*1024,即104M,112M,120M...1000M[H3C]display queue-scheduler 显示队列调度模式及参数[H3C]display priority-trust 显示优先级信任模式八.系统管理[H3C]mac-address blackhole H-H-H vlan 1 在VLAN1中添加黑洞MAC[H3C]mac-address static H-H-H interface Ethernet 0/1 vlan 1 在VLAN1中添加端口一的一个mac[H3C]mac-address timer aging 500 设置MAC地址表的老化时间为500s[H3C]display mac-address[H3C]display arp[H3C]mac-address port-binding H-H-H interface Ethernet 0/1 vlan 1 配置端口邦定[H3C]display mac-address port-binding[H3C]display saved-configuration[H3C]display current-configuration<H3C>save[H3C]restore default 恢复交换机出厂默认配置,恢复后需重启才能生效[H3C]display version<H3C>reboot[H3C]display device[H3C]sysname bigheap[H3C]info-center enable 启用系统日志功能,缺省情况下启用[H3C]info-center loghost ip[H3C]info-center loghost level 8 设置系统日志级别为8,默认为5.级别说明:<H3C>terminal debugging 启用控制台对调试信息的显示,缺省控制台为禁用<H3C>terminal logging 启用控制台对日志信息的显示,缺省控制台为启用<H3C>terminal trapping 启用控制台对告警信息的显示,缺省控制台为启用[H3C]display info-center 显示系统日志的配置和缓冲区记录的信息[H3C]display logbuffer 显示日志缓冲区最近记录的指定数目的日志信息[H3C]display trapbuffer 显示告警缓冲区最近记录的指定数目的日志信息<H3C>reset logbuffer 清除日志缓冲区的信息<H3C>reset trapbuffer 清除告警缓冲区的信息九.网络协议配置NDP即是邻居发现协议,S1550E只能开启或关闭NDP,无法配置,默认有效保留时间为180s,NDP报文发送的间隔60s [H3C]ndp enable 缺省情况下是开启的[H3C-Ethernet0/3]ndp enable 缺省情况下开启[H3C]display ndp 显示NDP配置信息[H3C]display ndp interface Ethernet 0/1 显示指定端口NDP发现的邻居信息<H3C>debugging ndp interface Ethernet 0/1HABP协议即Huawei Authentication Bypass Protocol,华为鉴权旁路协议,是用来解决当交换机上同时配置了和HGMPv1/v2时,未经授权和认证的端口上将过滤HGMP报文,从而使管理设备无法管理下挂的交换机的问题。

[S3600]H3C交换机配置详解本文来源于网络，感觉比较全面，给大家分享；一.用户配置:<H3C>system-view[H3C]super password H3C 设置用户分级密码[H3C]undo super password 删除用户分级密码[H3C]localuser bigheap 123456 1 Web网管用户设置,1（缺省）为管理级用户,缺省admin,admin [H3C]undo localuser bigheap 删除Web网管用户[H3C]user-interface aux 0 只支持0[H3C-Aux]idle-timeout 2 50 设置超时为2分50秒,若为0则表示不超时,默认为5分钟[H3C-Aux]undo idle-timeout 恢复默认值[H3C]user-interface vty 0 只支持0和1[H3C-vty]idle-timeout 2 50 设置超时为2分50秒,若为0则表示不超时,默认为5分钟[H3C-vty]undo idle-timeout 恢复默认值[H3C-vty]set authentication password 123456 设置telnet密码,必须设置[H3C-vty]undo set authentication password 取消密码[H3C]display users 显示用户[H3C]display user-interface 显示用户界面状态二.系统IP配置:[H3C]vlan 20[H3C]management-vlan 20[H3C]interface vlan-interface 20 创建并进入管理VLAN[H3C]undo interface vlan-interface 20 删除管理VLAN接口[H3C-Vlan-interface20]ip address 192.168.1.2 255.255.255.0 配置管理VLAN接口静态IP地址(缺省为192.168.0.234)[H3C-Vlan-interface20]undo ip address 删除IP地址[H3C-Vlan-interface20]ip gateway 192.168.1.1 指定缺省网关(默认无网关地址)[H3C-Vlan-interface20]undo ip gateway[H3C-Vlan-interface20]shutdown 关闭接口[H3C-Vlan-interface20]undo shutdown 开启[H3C]display ip 显示管理VLAN接口IP的相关信息[H3C]display interface vlan-interface 20 查看管理VLAN的接口信息<H3C>debugging ip 开启IP调试功能<H3C>undo debugging ip三.DHCP客户端配置:[H3C-Vlan-interface20]ip address dhcp-alloc 管理VLAN接口通过DHCP方式获取IP地址[H3C-Vlan-interface20]undo ip address dhcp-alloc 取消[H3C]display dhcp 显示DHCP客户信息<H3C>debugging dhcp-alloc 开启DHCP调试功能<H3C>undo debugging dhcp-alloc四.端口配置:[H3C]interface Ethernet0/3[H3C-Ethernet0/3]shutdown[H3C-Ethernet0/3]speed 100 速率,可为10,100,1000和auto(缺省)[H3C-Ethernet0/3]duplex full 双工,可为half,full和auto(缺省) 光口和汇聚后不能配置[H3C-Ethernet0/3]flow-control 开启流控,默认为关闭[H3C-Ethernet0/3]broadcast-suppression 20 设置抑制广播百分比为20%,可取5,10,20,100,缺省为100,同时组播和未知单播也受此影响[H3C-Ethernet0/3]loopback internal 内环测试[H3C-Ethernet0/3]loopback external 外环测试,需插接自环头,必须为全双工或者自协商模式[H3C-Ethernet0/3]port link-type trunk 设置链路的类型为trunk,可为access(缺省),trunk[H3C-Ethernet0/3]port trunk pvid vlan 20 设置20为该trunk的缺省VLAN,默认为1(trunk线路两端的PVID必须一致)[H3C-Ethernet0/3]port access vlan 20 将当前access端口加入指定的VLAN[H3C-Ethernet0/3]port trunk permit vlan all 允许所有的VLAN通过当前的trunk端口,可多次使用该命令[H3C-Ethernet0/3]mdi auto 设置以太端口为自动监测,normal(缺省)为直通线,across为交叉线[H3C]link-aggregation Ethernet 0/1 to Ethernet 0/4 将1-4口加入汇聚组,1为主端口,两端需要同时配置,设置了端口镜像以及端口隔离的端口无法汇聚[H3C]undo link-aggregation Ethernet 0/1 删除该汇聚组[H3C]link-aggregation mode egress 配置端口汇聚模式为根据目的MAC地址进行负荷分担,可选为ingress,egress和both,缺省为both[H3C]monitor-port Ethernet 0/2 将该端口设置为镜像端口,必须先设置镜像端口,删除时必须先删除被镜像端口,而且它们不能同在一个端口,该端口不能在汇聚组中,设置新镜像端口时,新取代旧,被镜像不变[H3C]mirroring-port Ethernet 0/3 to Ethernet 0/4 both 将端口3和4设置为被镜像端口,both为同时监控接收和发送的报文,inbound表示仅监控接收的报文,outbound表示仅监控发送的报文[H3C]display mirror[H3C]display interface Ethernet 0/3< H3C>reset counters 清除所有端口的统计信息[H3C]display link-aggregation Ethernet 0/3 显示端口汇聚信息[H3C-Ethernet0/3]virtual-cable-test 诊断该端口的电路状况五.VLAN配置:[H3C]vlan 2[H3C]undo vlan all 删除除缺省VLAN外的所有VLAN,缺省VLAN不能被删除[H3C-vlan2]port Ethernet 0/4 to Ethernet 0/7 将4到7号端口加入到VLAN2中,此命令只能用来加access端口,不能用来增加trunk或者hybrid端口[H3C-vlan2]port-isolate enable 打开VLAN内端口隔离特性,不能二层转发,默认不启用该功能[H3C-Ethernet0/4]port-isolate uplink-port vlan 2 设置4为VLAN2的隔离上行端口,用于转发二层数据,只能配置一个上行端口,若为trunk,则建议允许所有VLAN通过,隔离不能与汇聚同时配置[H3C]display vlan all 显示所有VLAN的详细信息S1550E支持基于端口的VLAN,通过创建不同的user-group来实现,一个端口可以属于多个user-group,不属于同一个user-group的端口不能互相通信,最多支持50个user-group[H3C]user-group 20 创建user-group 20,默认只存在user-group 1[H3C-UserGroup20]port Ethernet 0/4 to Ethernet 0/7 将4到7号端口加入到VLAN20中,初始时都属于user-group 1中[H3C]display user-group 20 显示user-group 20的相关信息六.集群配置:S2100只能作为成员交换机加入集群中,加入后系统名改为"集群名_成员编号.原系统名"的格式.即插即用功能通过两个功能实现: 集群管理协议MAC组播地址协商和管理VLAN协商[H3C]cluster enable 启用群集功能,缺省为启用[H3C]cluster 进入群集视图[H3C-cluster]administrator-address H-H-H name switch H-H-H为命令交换机的MAC,加入switch集群[switch_1.H3C-cluster]undo administrator-address 退出集群[H3C]display cluster 显示集群信息[H3C]management-vlan 2 集群报文只能在管理VLAN中转发,同一集群需在同一个管理VLAN中,需在建立集群之前指定管理VLAN< H3C>debugging cluster七.QoS配置:QoS配置步骤:设置端口的优先级,设置交换机信任报文的优先级方式,队列调度,端口限速[H3C-Ethernet0/3]priority 7 设置端口优先级为7,默认为0[H3C]priority-trust cos 设置交换机信任报文的优先级方式为cos(802.1p优先级,缺省值),还可以设为dscp方式(dscp优先级方式)[H3C]queue-scheduler hq-wrr 2 4 6 8 设置队列调度算法为HQ-WRR(默认为WRR),权重为2,4,6,8[H3C-Ethernet0/3]line-rate inbound 29 将端口进口速率限制为2Mbps,取1-28时,速率为rate*8*1024/125,即64,128,192...1.792M;29-127时,速率为(rate-27)*1024,即2M,3M,4M...100M,千兆时可继续往下取,128-240时,速率为(rate-115)*8*1024,即104M,112M,120M...1000M [H3C]display queue-scheduler 显示队列调度模式及参数[H3C]display priority-trust 显示优先级信任模式八.系统管理:[H3C]mac-address blackhole H-H-H vlan 1 在VLAN1中添加黑洞MAC[H3C]mac-address static H-H-H interface Ethernet 0/1 vlan 1 在VLAN1中添加端口一的一个mac[H3C]mac-address timer aging 500 设置MAC地址表的老化时间为500s[H3C]display mac-address[H3C]display arp[H3C]mac-address port-binding H-H-H interface Ethernet 0/1 vlan 1 配置端口邦定[H3C]display mac-address port-binding[H3C]display saved-configuration[H3C]display current-configuration< H3C>save[H3C]restore default 恢复交换机出厂默认配置,恢复后需重启才能生效[H3C]display version< H3C>reboot[H3C]display device[H3C]sysname bigheap[H3C]info-center enable 启用系统日志功能,缺省情况下启用[H3C]info-center loghost ip 192.168.0.3 向指定日志主机(只能为UNIX或LINUX,不能为Windows)输出信息,需先开启日志功能,缺省关闭[H3C]info-center loghost level 8 设置系统日志级别为8,默认为5.级别说明:1.emergencies 2.alerts 3.critical 4.errors 5.warnings 6.notifications rmational 8.debugging< H3C>terminal debugging 启用控制台对调试信息的显示,缺省控制台为禁用<H3C>terminal logging 启用控制台对日志信息的显示,缺省控制台为启用<H3C>terminal trapping 启用控制台对告警信息的显示,缺省控制台为启用[H3C]display info-center 显示系统日志的配置和缓冲区记录的信息[H3C]display logbuffer 显示日志缓冲区最近记录的指定数目的日志信息[H3C]display trapbuffer 显示告警缓冲区最近记录的指定数目的日志信息<H3C>reset logbuffer 清除日志缓冲区的信息<H3C>reset trapbuffer 清除告警缓冲区的信息九.网络协议配置:NDP即是邻居发现协议,S1550E只能开启或关闭NDP,无法配置,默认有效保留时间为180s,NDP报文发送的间隔60s[H3C]ndp enable 缺省情况下是开启的[H3C-Ethernet0/3]ndp enable 缺省情况下开启[H3C]display ndp 显示NDP配置信息[H3C]display ndp interface Ethernet 0/1 显示指定端口NDP发现的邻居信息<H3C>debugging ndp interface Ethernet 0/1HABP协议即Huawei Authentication Bypass Protocol,华为鉴权旁路协议,是用来解决当交换机上同时配置了802.1x和HGMPv1/v2时,未经授权和认证的端口上将过滤HGMP报文,从而使管理设备无法管理下挂的交换机的问题。

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..................................................................................................................1-22 流分类、流量监管和流量整形配置.....................................................................................................2-12.1 流分类简介........................................................................................................................................2-12.1.1 流分类.....................................................................................................................................2-12.1.2 优先级.....................................................................................................................................2-12.2 流量监管和流量整形简介..................................................................................................................2-22.2.1 流量评估与令牌桶...................................................................................................................2-22.2.2 流量监管.................................................................................................................................2-32.2.3 流量整形.................................................................................................................................2-32.2.4 物理接口限速..........................................................................................................................2-42.3 流量监管/流量整形/物理接口限速配置..............................................................................................2-52.3.1 流量监管配置..........................................................................................................................2-52.3.2 流量整形配置..........................................................................................................................2-72.3.3 物理接口限速配置...................................................................................................................2-92.4 流量监管/流量整形/物理接口限速显示和维护...................................................................................2-92.5 流量监管与流量整形典型配置举例..................................................................................................2-103 QoS策略配置.....................................................................................................................................3-13.1 QoS策略简介.....................................................................................................................................3-13.2 配置QoS策略.....................................................................................................................................3-13.2.1 配置准备.................................................................................................................................3-13.2.2 定义类.....................................................................................................................................3-13.2.3 定义流行为..............................................................................................................................3-23.2.4 定义策略.................................................................................................................................3-33.2.5 QoS策略配置举例...................................................................................................................3-33.3 应用QoS策略.....................................................................................................................................3-43.3.1 基于接口或PVC应用QoS策略................................................................................................3-43.4 配置QoS策略流速统计时间...............................................................................................................3-53.5 QoS策略显示和维护..........................................................................................................................3-54 拥塞管理配置.....................................................................................................................................4-14.1 拥塞管理简介.....................................................................................................................................4-14.1.1 拥塞管理策略..........................................................................................................................4-14.2 先进先出队列的配置..........................................................................................................................4-64.2.1 FIFO队列配置过程..................................................................................................................4-64.2.2 FIFO队列配置过程举例..........................................................................................................4-64.3 优先队列的配置.................................................................................................................................4-64.3.1 优先队列配置过程...................................................................................................................4-64.3.2 优先队列配置过程举例...........................................................................................................4-74.4 定制队列的配置.................................................................................................................................4-84.4.1 定制队列配置过程...................................................................................................................4-84.4.2 定制队列配置过程举例...........................................................................................................4-94.5 加权公平队列的配置........................................................................................................................4-104.5.1 加权公平队列配置过程.........................................................................................................4-104.5.2 加权公平队列配置过程举例..................................................................................................4-104.6 基于类的队列的配置........................................................................................................................4-114.6.1 配置接口最大可用带宽.........................................................................................................4-114.6.2 定义类...................................................................................................................................4-134.6.3 定义流行为............................................................................................................................4-134.6.4 定义策略...............................................................................................................................4-184.6.5 应用策略...............................................................................................................................4-184.6.6 基于类的队列典型配置举例..................................................................................................4-194.6.7 基于类的队列的显示和维护..................................................................................................4-214.7 RTP优先队列的配置........................................................................................................................4-214.7.1 RTP优先队列配置过程.........................................................................................................4-214.7.2 RTP优先队列配置过程举例..................................................................................................4-224.8 QoS令牌配置...................................................................................................................................4-224.8.1 QoS令牌配置过程.................................................................................................................4-224.8.2 QoS令牌配置举例.................................................................................................................4-234.9 报文信息预提取功能配置................................................................................................................4-234.9.1 报文信息预提取功能配置过程...............................................................................................4-234.9.2 报文信息预提取功能配置过程举例.......................................................................................4-234.10 本机分片预丢弃功能配置..............................................................................................................4-244.10.1 本机分片预丢弃功能配置过程.............................................................................................4-244.10.2 本机分片预丢弃功能配置过程举例.....................................................................................4-245 优先级映射........................................................................................................................................5-15.1 优先级映射简介.................................................................................................................................5-15.2 优先级映射表配置.............................................................................................................................5-25.2.1 配置准备.................................................................................................................................5-25.2.2 配置过程.................................................................................................................................5-25.2.3 配置举例.................................................................................................................................5-35.3 端口优先级配置.................................................................................................................................5-35.3.1 配置准备.................................................................................................................................5-35.3.2 配置过程.................................................................................................................................5-45.3.3 配置举例.................................................................................................................................5-45.4 端口优先级信任模式配置..................................................................................................................5-45.4.1 配置准备.................................................................................................................................5-55.4.3 配置举例.................................................................................................................................5-55.5 优先级映射显示和维护......................................................................................................................5-55.6 优先级映射典型配置举例..................................................................................................................5-65.6.1 典型组网案例一......................................................................................................................5-65.6.2 典型组网案例二......................................................................................................................5-76 拥塞避免............................................................................................................................................6-16.1 拥塞避免简介.....................................................................................................................................6-16.2 WRED配置的说明.............................................................................................................................6-26.2.1 WRED的配置方式...................................................................................................................6-26.2.2 WRED的参数说明...................................................................................................................6-26.3 以接口配置方式配置WRED...............................................................................................................6-36.3.1 配置准备.................................................................................................................................6-36.3.2 配置过程.................................................................................................................................6-36.3.3 配置举例.................................................................................................................................6-36.4 以WRED表配置方式配置WRED.......................................................................................................6-46.4.1 配置准备.................................................................................................................................6-46.4.2 配置过程.................................................................................................................................6-46.5 WRED显示和维护.............................................................................................................................6-56.6 WRED典型配置举例..........................................................................................................................6-57 MPLS QoS配置.................................................................................................................................7-17.1 MPLS QoS概述.................................................................................................................................7-17.2 MPLS QoS配置.................................................................................................................................7-17.2.1 配置MPLS PQ........................................................................................................................7-17.2.2 配置MPLS CQ........................................................................................................................7-27.2.3 配置MPLS QoS策略...............................................................................................................7-37.2.4 配置MPLS CAR......................................................................................................................7-47.3 MPLS QoS配置举例..........................................................................................................................7-47.3.1 对同一VPN内的流进行QoS配置.............................................................................................7-48 DAR配置............................................................................................................................................8-18.1 DAR简介...........................................................................................................................................8-18.1.1 IP报文简介..............................................................................................................................8-18.1.2 TCP报文简介..........................................................................................................................8-28.1.3 UDP报文简介..........................................................................................................................8-48.1.4 HTTP报文简介........................................................................................................................8-48.1.5 RTP报文简介..........................................................................................................................8-48.1.6 RTCP报文简介.......................................................................................................................8-58.1.7 静态协议简介..........................................................................................................................8-68.2 配置DAR...........................................................................................................................................8-88.2.1 配置准备.................................................................................................................................8-88.2.2 配置协议的匹配规则...............................................................................................................8-88.2.3 配置DAR应用协议的端口号....................................................................................................8-88.2.4 重命名用户预定义协议...........................................................................................................8-98.2.5 配置DAR的报文统计功能.......................................................................................................8-98.2.6 配置DAR可识别的最大连接数................................................................................................8-9 8.3 DAR显示和维护...............................................................................................................................8-10 8.4 DAR典型配置举例...........................................................................................................................8-108.4.1 禁止BT下载配置举例............................................................................................................8-108.4.2 HTTP URL的深度匹配配置举例...........................................................................................8-118.4.3 HTTP HOST的深度匹配配置举例.........................................................................................8-121 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。

QoS队列调度算法队列指的是在缓存中对报⽂进⾏排序的逻辑。

当流量的速率超过接⼝带宽或超过为该流量设置的带宽时，报⽂就以队列的形式暂存在缓存中。

报⽂离开队列的时间、顺序，以及各个队列之间报⽂离开的相互关系由队列调度算法决定。

华为交换机设备的每个端⼝上都有 8 个下⾏队列，称为CQ（Class Queue）队列，也叫端⼝队列（Port-queue），在交换机内部与前⽂提到的 8 个PHB⼀⼀对应，分别为BE、 AF1、AF2、AF3、AF4、EF、CS6 和CS7。

单个队列的报⽂采⽤ FIFO（First In First Out）原则⼊队和出队。

PQ（Priority Queuing）调度PQ（Priority Queuing）调度，就是严格按照队列优先级的⾼低顺序进⾏调度。

只有⾼优先级队列中的报⽂全部调度完毕后，低优先级队列才有调度机会。

采⽤PQ 调度⽅式，将延迟敏感的关键业务放⼊⾼优先级队列，将⾮关键业务放⼊低优先级队列，从⽽确保关键业务被优先发送。

PQ调度的缺点是：拥塞发⽣时，如果较⾼优先级队列中长时间有分组存在，那么低优先级队列中的报⽂就会由于得不到服务⽽“饿死”。

假设端⼝有 3 个采⽤PQ调度的队列，分别为⾼优先（High）队列、中优先（Medium）队列、和低优先（Low）队列，它们的优先级依次降低。

如图，其中报⽂编号表⽰报⽂到达顺序。

图1 PQ调度RR（Round Robin）调度RR调度采⽤轮询的⽅式，对多个队列进⾏调度。

RR以环形的⽅式轮询多个队列。

如果轮询的队列不为空，则从该队列取⾛⼀个报⽂；如果该队列为空，则直接跳过该队列，调度器不等待。

图2 RR调度RR调度各个队列之间没有优先级之分，都能够有相等的概率得到调度。

RR调度的缺点是：所有队列⽆法体现优先级，对于延迟敏感的关键业务和⾮关键业务⽆法得到区别对待，使得关键业务⽆法及时得到处理WRR（Weighted Round Robin）调度加权轮询WRR（Weighted Round Robin）调度主要解决RR不能设置权重的不⾜。

H3C交换机优先级重标记和队列调度典型配置指导5.2 优先级重标记和队列调度典型配置指导5.2.1 组网图5.2.2 应用要求公司企业网通过交换机（以 S5500-EI 为例）实现互连。

网络环境描述如下： Host A 和 Host B 通过端口 GigabitEthernet 1/0/1 接入交换机； Host C 通过端口 GigabitEthernet 1/0/2 接入交换机；数据库服务器、邮件服务器和文件服务器通过端口GigabitEthernet 1/0/3 接入交换机。

配置优先级重标记和队列调度，实现如下需求：当 Host A 和 Host B 访问服务器时，交换机优先处理 Host A 和Host B 访问数据库服务器的报文，其次处理 Host A 和 Host B 访问邮件服务器的报文，最后处理 Host A 和 Host B 访问文件服务器的报文；无论Host C 访问Internet 或访问服务器，交换机都优先处理Host C 发出的报文。

5.2.3 配置过程和解释针对 Host A 和 Host B 的配置# 定义高级 ACL 3000，对目的 IP 地址为 192.168.0.1 的报文进行分类。

system-view[Switch] acl number 3000[Switch-acl-adv-3000] rule permit ip destination 192.168.0.1 0 [Switch-acl-adv-3000] quit# 定义高级 ACL 3001，对目的 IP 地址为 192.168.0.2 的报文进行分类。

system-view[Switch] acl number 3001[Switch-acl-adv-3001] rule permit ip destination 192.168.0.2 0 [Switch-acl-adv-3001] quit# 定义高级 ACL 3002，对目的 IP 地址为 192.168.0.3 的报文进行分类。

操作手册 WLAN手册 WLAN QoS 目录目录第1章 WLAN QoS配置..........................................................................................................1-11.1 WLAN QoS简介.................................................................................................................1-11.1.1 术语.........................................................................................................................1-11.1.2 WMM协议概述.........................................................................................................1-21.1.3 协议和标准..............................................................................................................1-41.2 配置WMM服务...................................................................................................................1-41.2.1 配置准备..................................................................................................................1-41.2.2 配置WMM服务.........................................................................................................1-41.3 WMM服务显示和维护........................................................................................................1-61.4 WMM服务典型配置举例.....................................................................................................1-61.4.1 WMM基本服务配置举例..........................................................................................1-61.4.2 CAC服务典型配置举例............................................................................................1-81.4.3 SVP服务典型配置举例............................................................................................1-91.5 常见配置错误举例............................................................................................................1-101.5.1 EDCA参数配置失败...............................................................................................1-101.5.2 配置SVP或CAC功能无效......................................................................................1-10第1章 WLAN QoS配置说明：本章所指的无线接入点设备及图标，代表了一般意义下的具有无线接入点功能的路由器设备。

Quidway S3900系列以太网交换机操作手册-Release 1510QoS-Qos Profile 目录目录第1章 QoS配置.....................................................................................................................1-11.1 QoS简介............................................................................................................................1-11.1.1 流.............................................................................................................................1-11.1.2 流分类......................................................................................................................1-11.1.3 优先级......................................................................................................................1-21.1.4 设置协议报文优先级................................................................................................1-51.1.5 优先级重标记...........................................................................................................1-51.1.6 包过滤......................................................................................................................1-51.1.7 端口限速..................................................................................................................1-51.1.8 流量监管..................................................................................................................1-51.1.9 聚合端口队列调度配置同步.....................................................................................1-71.1.10 重定向....................................................................................................................1-81.1.11 队列调度................................................................................................................1-81.1.12 基于流的流量统计...............................................................................................1-101.2 S3900系列交换机支持的QoS.........................................................................................1-101.3 配置802.1p优先级和队列之间的映射关系......................................................................1-111.4 设置信任端口或报文的优先级..........................................................................................1-121.5 配置优先级重标记............................................................................................................1-131.5.1 配置准备................................................................................................................1-131.5.2 配置过程................................................................................................................1-131.5.3 配置举例................................................................................................................1-141.6 设置协议报文优先级........................................................................................................1-151.6.1 配置准备................................................................................................................1-151.6.2 配置过程................................................................................................................1-151.6.3 配置举例................................................................................................................1-151.7 配置端口限速...................................................................................................................1-161.7.1 配置准备................................................................................................................1-161.7.2 端口限速配置过程..................................................................................................1-161.7.3 配置举例................................................................................................................1-161.8 配置流量监管...................................................................................................................1-171.8.1 配置准备................................................................................................................1-171.8.2 流量监管配置过程..................................................................................................1-171.8.3 配置举例................................................................................................................1-181.9 配置重定向.......................................................................................................................1-181.9.1 配置准备................................................................................................................1-181.9.2 配置过程................................................................................................................1-18目 录Quidway S3900系列以太网交换机 操作手册-Release 1510QoS-Qos Profileii 华为所有和机密1.9.3 配置举例................................................................................................................1-191.10 配置队列调度.................................................................................................................1-191.10.1 配置准备..............................................................................................................1-191.10.2 配置过程..............................................................................................................1-201.10.3 配置举例..............................................................................................................1-211.11 配置拥塞避免.................................................................................................................1-221.11.1 配置准备..............................................................................................................1-221.11.2 配置过程..............................................................................................................1-221.11.3 配置举例..............................................................................................................1-221.12 配置流量统计.................................................................................................................1-221.12.1 配置准备..............................................................................................................1-231.12.2 流量统计配置过程...............................................................................................1-231.12.3 清除流量统计的信息............................................................................................1-231.12.4 配置举例..............................................................................................................1-241.13 QoS 配置实例.................................................................................................................1-241.13.1 流量监管和端口限速配置实例.............................................................................1-241.13.2 优先级重标记配置实例........................................................................................1-25第2章 QoS Profile 配置..........................................................................................................2-12.1 QoS Profile 简介.................................................................................................................2-12.1.1 QoS Profile 的应用模式...........................................................................................2-12.2 QoS Profile 的配置介绍......................................................................................................2-12.3 配置QoS Profile ................................................................................................................2-22.3.1 配置准备..................................................................................................................2-22.3.2 配置过程..................................................................................................................2-22.3.3 配置举例..................................................................................................................2-32.4 手动应用QoS profile 到端口上..........................................................................................2-52.5 QoS profile 的显示.............................................................................................................2-5Quidway S3900系列以太网交换机操作手册-Release 1510QoS-Qos Profile 第1章 QoS配置第1章 QoS配置1.1 QoS简介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。