交换机端口收的错包，引起的端口UP/DOWN

Mar 31 2020 16:32:51+08:00 HY-YunGuan-SW6 %%01LLDP/4/BAD_PACKET(l)[0]:3 invalid packets were received after latest notification. The last invalid packet came from interface GigabitEthernet0/0/48. 会引起端口up/down

管理员可以根据接收到非法报文的端口使用命令去检查与此端口相连的邻居设备的状态是否正常。 方法： 系统视图下：使用display interface查看端口状态是否为Up。 如果本地设备和邻居设备都使能了DLDP协议，可使用display dldp查看链路状态是否Up。 1）如果是=>3。 2）如果否=>2。 请检查连结线的是否连接正常。 1）如果是，请重新链接好连接线=>4。 2）如果否=>3。 检查是否存在非法连接。 1）如果是，请重新拆除此类连接线=>4。 2）如果否=>5。 30秒后检查日志缓冲区中是否仍然有此日志。 1）如果是=>5。 2）如果否=>6。

Statistics for GigabitEthernet0/0/46: Transmitted Frames Total: 612527 Received Frames Total: 612504 Frames Discarded Total: 612504 Frames Error Total: 612504 TLVs Discarded Total: 612380 TLVs Unrecognized Total: 0 Neighbors Expired Total: 0 Statistics for GigabitEthernet0/0/47: Transmitted Frames Total: 539308 Received Frames Total: 1960 Frames Discarded Total: 1960 Frames Error Total: 1960 TLVs Discarded Total: 1860 TLVs Unrecognized Total: 0 Neighbors Expired Total: 0 Statistics for GigabitEthernet0/0/48: Transmitted Frames Total: 648177 Received Frames Total: 647377 Frames Discarded Total: 647377 Frames Error Total: 647377 TLVs Discarded Total: 647370 TLVs Unrecognized Total: 0 Neighbors Expired Total: 0 这是收到错包的端口 lldp的信息