A down state would indicate a possible bad cable or network switch port.
如果Link state为down，那么就显示网线或网络交换机端口可能有问题。
Remove through access port with back of clapper first with spring end down.
首先通过检修口拆卸阀瓣的后面及其弹簧末端。
As the world's first port throughput - Shanghai, would you lay down and die?
作为世界吞吐量第一大港——上海，怎能坐以待毙？
As the world's first port throughput - Shanghai, would you lay down and die?
作为世界吞吐量第一大港——上海，怎能坐以待毙？
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