# 名字空间

默认情况下，主机节点有用独立的名字空间（namespace），而控制节点跟交换节点都在根名字空间（root namespace）中。

如果想要让所有节点拥有各自的名字空间，需要添加 `--innamespace` 参数，即启动方式为 `sudo mn --innamespace`。

注意：为了方便测试，在默认情况下，所有节点使用同一进程空间，因此，在 h2 跟 h3 或者 s1 上使用 `ps` 查看进程得到的结果是一致的，都是根名字空间中的进程信息。


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