某局点两台S5130-EI交换机经过不同运营商MSTP专线做链路聚合不成功

     某局点使用两台S5130-EI交换机做链路聚合，两根线路分别是联通和电信的MSTP专线。

   配置完之后发现链路聚合不成功，一个接口无法选中。

    查看设备两边的配置没有问题，在两侧交换机对无法选中的接口进行debug 

   <S022-ZBJR-002>debugging link-aggregation lacp packet all interface GigabitEtherne t 2/0/47

发现在一台设备上只发不收

*Aug 22 21:58:03:992 2018 S022-ZBJR-002 LAGG/7/Packet: PACKET.GigabitEthernet2/0/47.send. 

 size=110, subtype=1, version=1

 Actor: type=1, len=20, sys-pri=0x8000, sys-mac=ac74-09ae-7108, key=0x2, pri=0x8000, port-index=0x70, state=0xc5 

Partner: type=2, len=20, sys-pri=0x8000, sys-mac=0000-0000-0000, key=0x0, pri=0x8000, port-index=0x0, state=0x32

 Collector: type=3, len=16, col-max-delay=0x0 

 Terminator: type=0, len=0 

 *Aug 22 21:58:04:770 2018 S022-ZBJR-002 LAGG/7/Packet: -Slot=1; PACKET.GigabitEthernet1/0/47.send.

 size=110, subtype=1, version=1

 Actor: type=1, len=20, sys-pri=0x8000, sys-mac=ac74-09ae-7108, key=0x2, pri=0x8000, port-index=0x2f, state=0x3d  

Partner: type=2, len=20, sys-pri=0x8000, sys-mac=ac74-09ae-5cc8, key=0x2, pri=0x8000, port-index=0x2f, state=0x3d 

Collector: type=3, len=16, col-max-delay=0x0 

 Terminator: type=0, len=0

 *Aug 22 21:58:05:001 2018 S022-ZBJR-002 LAGG/7/Packet: PACKET.GigabitEthernet2/0/47.send. 

 size=110, subtype=1, version=1 

Actor: type=1, len=20, sys-pri=0x8000, sys-mac=ac74-09ae-7108, key=0x2, pri=0x8000, port-index=0x70, state=0xc5  

Partner: type=2, len=20, sys-pri=0x8000, sys-mac=0000-0000-0000, key=0x0, pri=0x8000, port-index=0x0, state=0x32  

Collector: type=3, len=16, col-max-delay=0x0 

 Terminator: type=0, len=0

对端设备有收有发

*Aug 22 22:04:40:367 2018 S022-ZBJR-001 LAGG/7/Packet: -Slot=2; PACKET.GigabitEthernet2/0/47.send. 

 size=110, subtype=1, version=1 

Actor: type=1, len=20, sys-pri=0x8000, sys-mac=ac74-09ae-5cc8, key=0x2, pri=0x8000, port-index=0x70, state=0xd  

Partner: type=2, len=20, sys-pri=0x8000, sys-mac=ac74-09ae-7108, key=0x2, pri=0x8000, port-index=0x70, state=0xc5  

Collector: type=3, len=16, col-max-delay=0x0 

 Terminator: type=0, len=0 

*Aug 22 22:04:49:797 2018 S022-ZBJR-001 LAGG/7/Packet: -Slot=2; PACKET.GigabitEthernet2/0/47.receive. 

size=110, subtype=1, version=1  

Actor: type=1, len=20, sys-pri=0x8000, sys-mac=ac74-09ae-7108, key=0x2, pri=0x8000, port-index=0x70, state=0x45  

Partner: type=2, len=20, sys-pri=0x8000, sys-mac=0000-0000-0000, key=0x0, pri=0x8000, port-index=0x0, state=0x38  

Collector: type=3, len=16, col-max-delay=0x0 

 Terminator: type=0, len=0

  通过日志发现发送的mac地址是全0的，正常情况时这个地址应该是接口的地址。

  导致mac地址全0的原因是因为lacp报文不通导致，现场情况是因为运营商线路问题导致出现单通情况，由于无法和对端互通，故mac地址变成全0.

   联系运营商修复中间的MSTP专线链路之后问题解决。