我正在查看思科交换机的工作日志，有时候我们可能会详细地讨论它的问题。
例如，我们在这里使用自动QoS，并且在电话插入时我经常看到：
Mar 18 15:22:40: %SWITCH_QOS_TB-5-TRUST_DEVICE_DETECTED: cisco-phone detected on port Fa1/0/9, port's configured trust state is now operational. Mar 18 15:22:41: %SWITCH_QOS_TB-5-TRUST_DEVICE_DETECTED: cisco-phone detected on port Fa1/0/9, port's configured trust state is now operational. Mar 18 15:22:42: %SWITCH_QOS_TB-5-TRUST_DEVICE_DETECTED: cisco-phone detected on port Fa1/0/9, port's configured trust state is now operational. Mar 18 15:22:43: %SWITCH_QOS_TB-5-TRUST_DEVICE_DETECTED: cisco-phone detected on port Fa1/0/9, port's configured trust state is now operational. Mar 18 15:22:44: %SWITCH_QOS_TB-5-TRUST_DEVICE_DETECTED: cisco-phone detected on port Fa1/0/9, port's configured trust state is now operational. Mar 18 15:22:45: %SWITCH_QOS_TB-5-TRUST_DEVICE_DETECTED: cisco-phone detected on port Fa1/0/9, port's configured trust state is now operational. 为什么六次垃圾邮件？ 这在WS-C3750V2-24-PS-S交换机上。 如果有所不同，在运行IOS 12.2（55）SE3的堆栈中有5个交换机。
端口的configuration如下：
Current configuration : 655 bytes ! interface FastEthernet1/0/9 switchport access vlan 10 switchport mode access switchport voice vlan 710 switchport port-security maximum 3 switchport port-security switchport port-security aging time 2 switchport port-security violation restrict switchport port-security aging type inactivity ip arp inspection limit rate 100 load-interval 30 srr-queue bandwidth share 10 10 60 20 priority-queue out mls qos trust device cisco-phone mls qos trust cos auto qos voip cisco-phone spanning-tree portfast spanning-tree bpduguard enable service-policy input AutoQoS-Police-CiscoPhone ip verify source ip dhcp snooping limit rate 100 end
我相信这可能是一个冲突：
auto qos voip cisco-phone
和其他服务政策：
service-policy input AutoQoS-Police-CiscoPhone
我会尝试删除其中的一个，看看会发生什么。 在我们的环境中，我们没有问题只运行自动qos。
从AutoQoS文档“确保接口不附加任何QoS策略（服务策略）。如果QoS策略（服务策略）连接到接口，则无法configuration此function”
AutoQoS的