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1、mac地址flapping在不同接口的异常日志详解mac地址flapping在不同接口的异常日志详解 This example shows the console output that you see when this error occurs: SYS-4-P2_WARN: 1/Host 00:50:0f:20:08:00 is flapping between port 1/2 and port 4/39 Use the steps and guidelines in this section in order to understand and troubleshoot the ca
2、use of this error message. The message indicates that your Catalyst 4500/4000 switch has learned a MAC address that already exists in the content-addressable memory CAM table on a port other than the original one. This behavior repeatedly occurs over short periods of time which means that there is a
3、ddress flapping between ports. If the message appears for multiple MAC addresses the behavior is not normal. This behavior indicates a possible network problem because the MAC addresses move quickly from one port to another port before the default aging time. The problem can be looping traffic on th
4、e network. Typical symptoms include: High CPU utilization Slow traffic throughout the network High backplane utilization on the switch For information on how to identify and troubleshoot issues with spanning tree refer to Spanning Tree Protocol Problems and Related Design Considerations. 这是我看国外一个人的日志意思就是出现这个问题就是你的交换机通过学习到的mac地址在寻址地址表里已经存在了如果反复出现就说明网络有问题症状有高cpu利用率整个网络慢交换机的背板利用率低建议通过这两个端口和查看mac地址找出mac是从什么地方学习来的然后确定问题
