MAC地址表里终端MAC在下行口和上行口同时学习到

在接入交换机一接入端口GE1/4/0/2下有一个终端接入，MAC是AAAA-AAAA-AAAA，然后在接入交换机上display mac-adress | include AAAA-AAAA-AAAA后能看到这个AAAA-AAAA-AAAA的MAC地址除了有一条interface为 GE1/4/0/2  的MAC项外，还有几条从接入交换机的上联端口学习到的MAC项，这是为什么呢？且其终端业务会中断

<S7506E>dis mac-address | in aaaa-aaaa-aaaa 

aaaa-aaaa-aaaa 134 Learned BAGG1024 Y 

aaaa-aaaa-aaaa 165 Learned BAGG1024 Y 

aaaa-aaaa-aaaa 189 Learned BAGG1024 Y 

aaaa-aaaa-aaaa 201 Learned BAGG1024 Y 

aaaa-aaaa-aaaa 3516 Learned BAGG1024 Y 

aaaa-aaaa-aaaa 130 Learned GE1/4/0/2 Y

在核心(对接接入的聚合口为BAGG1004）查看MAC命令如下：

<S12508-CORE>display l2vpn mac-address | include   aaaa-aaaa-aaaa   

aaaa-aaaa-aaaa Mac-auth vsi3516 BAGG1004 NotAging

MAC为aaaa-aaaa-aaaa  的终端接在S7506E接入交换机的GE1/4/0/2下，BGG1024为S7506E的上联聚合口，核心S12508对接S7506E的聚合口为BAGG1004。S12508为VTEP，S7506E为ACCESS，采用vxlan+evpn组网，只有一台核心S12508（堆叠）作为leaf，S7506E全部是access。aaaa-aaaa-aaaa的终端IP为10.95.151.64，vsi接口为vsi3516.

S12508E版本为Version 7.1.070, Release 7568P01

S7506E版本为version: 7.1.070, Release 7568P01