IMC告警收到不可解析的OSPF报文解决办法

故障设备：核心S12518，汇聚S10508-V

故障现象：IMC告警提示“接口收到不可解析的OSPF报文，S12518 _IP为X.X.X.X的接口收

                    到从X.X.X.X发过来的报文类型为1的误配置信息。”

故障诊断：经过两台设互PING得出以下结果

    PING X.X.0.1: 56  data bytes, press CTRL_C to break

    Reply from X.X.0.1: bytes=56 Sequence=1 ttl=255 time=1 ms

    Reply from X.X.0.1: bytes=56 Sequence=1 ttl=255 time=202 ms (DUP!)

    Reply from X.X.0.1: bytes=56 Sequence=2 ttl=255 time=2 ms

    Reply from X.X.0.1: bytes=56 Sequence=2 ttl=255 time=202 ms (DUP!)

    Reply from X.X.0.1: bytes=56 Sequence=3 ttl=255 time=1 ms

    Reply from X.X.0.1: bytes=56 Sequence=3 ttl=255 time=202 ms (DUP!)

    Reply from X.X.0.1: bytes=56 Sequence=4 ttl=255 time=1 ms

    Reply from X.X.0.1: bytes=56 Sequence=4 ttl=255 time=202 ms (DUP!)

    Reply from X.X.0.1: bytes=56 Sequence=5 ttl=255 time=1 ms

  --- X.X.0.1 ping statistics ---

    5 packet(s) transmitted

    9 packet(s) received

    4 duplicates

    0.00% packet loss

    round-trip min/avg/max = 1/62/202 ms

解决办法：根据以上PING 信息可能看出在这台交换机上存在重复报文（DUP!为重复报文）检查配置在设备上配置了端口镜像，发现端口镜像镜像到了上联出口所以造成了重复的报文。经过修改后问题解决。

问题根源：由于用户的误配置将镜像做到了上联口导致故障发生，此情况应该将数据镜像到Netstram插卡的内连接口为正确。