1、进入隐含模式：

<H3C>system-view

System View: return to User View with Ctrl+Z.

[H3C]_

Now you enter a hidden command view for developer's testing, some commands may

affect operation by wrong use, please carefully use it with our engineer's

direction.

[H3C-hidecmd]

2、输入显示STP历史状态变化的命令：

[H3C-hidecmd]_dis stp history unit 1

---------- Stp Instance 0 history trace ----------

内容略。

该命令在定位STP状态错误或者拓扑变化的问题时，非常有利于记录网络的历史变化。帮助我们准确快速定位STP相关问题。

我有H3C S3600-28F-的问题要问