本文分析了华为交换机中遇到的MAC地址漂移告警，详细记录了告警时间及接口，并指出该问题可能导致服务器ping操作出现重复回应包（dup）现象。MAC地址漂移可能与双网卡绑定配置错误有关，特别是BONDING_OPTS参数设置。当存在MAC地址漂移和网络环路时，dup现象更易发生。
华为交换机收到mac地址漂移告警：
Dec 24 2018 16:48:22+08:00 HW5320 %%01SECE/4/UCSUPPRESSRESUME(l)
[66]:MAC address flapping finished on port. Unknown unicast packets were normally forwarded.(Interface=GigabitEthernet0/0/2)
Dec 24 2018 16:43:22+08:00 HW5320 %%01SECE/4/UCSUPPRESSRESUME(l)
[67]:MAC address flapping finished on port. Unknown unicast packets were normally forwarded.(Interface=GigabitEthernet1/0/5)
Dec 24 2018 16:41:34+08:00 HW5320 %%01SECE/4/UCSUPPRESS(l)[70]:MAC address flapping started on port. The rate of unknown unicast packets was limited to 50% of the port bandwidth.(Interface=GigabitEthernet0/0/4)
Dec 24 2018 16:40:14+08:00 HW5320 %%01SECE/4
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