1. 启动QOS特性
mls qos 2. 定义用户的速度限制 mls qos aggregate-policer Customer-1 1000000 800000 exceed-action drop 3. 定义匹配的流量 class-map match-all egress-group1 match ip dscp 0 4. 匹配流量与速度限制 policy-map 50 class egress-group1 police Customer-1 所有符合egress-group1的流量将实施Customer-1策略 5. 应用至端口 interface FastEthernet0/1 no ip address service-policy output 50 service-policy output 50表明该端口实施名字为50的政策