控制器上的以太网接口端口每天都关闭

• EMS日志中存在多个端口链路关闭事件。示例：

[node_name: kernel: netif.linkDown:info]: Ethernet e1a: Link down, check cable.
[node_name: intr: net.ifgrp.lacp.link.inactive:error]: ifgrp a0a, port e1a has transitioned to an inactive state. The interface group is in a degraded state.
[node_name: vifmgr: vifmgr.portdown:notice]: A link down event was received on node node_name, port e1a.
[node_name: kernel: netif.linkUp:info]: Ethernet e1a: Link up.
[node_name: vifmgr: vifmgr.portup:notice]: A link up event was received on node node_name, port e1a.
[node_name: intr: net.ifgrp.lacp.link.active:notice]: ifgrp a0a, port e1a has transitioned to the active state.
[node_name: vifmgr: vifmgr.reach.noreach:notice]: Network port e1a on node node_name cannot reach its expected broadcast domain Default:Default. No other broadcast domains appear to be reachable from this port.ifstat show an increasing amount of "up to downs" for the selected port and no other errors 

• ifstat 所选端口的输出中的"up to down (向上到向下)"计数器将增加。示例： 

-- interface  e1a  (22 hours, 11 minutes, 36 seconds) --
...
LINK INFO
 Speed:         0  | Duplex:       full | Flowcontrol:     none
 Media state: no carrier | Up to downs:     135 | HW assist:     7711
 

• ifstat 输出中未发现其他错误
• 更换缆线后、问题描述仍然存在
• 交换机端口更改后、问题描述持久保留 
• 更改配线板端口后、问题描述仍会保留。