有些交换机生成一个路由表，其中包含了主机的IP地址和IP地址所在配置器的mac地址。
Some switches generate a route table that includes the IP address of the host and the MAC address of the adapter that owns the IP address.
集线器和交换机有同一个局限，即以太网网络必须是无路由循环的。
One limitation that applies to hubs and switches alike is that an Ethernet network must be loop-free.
在RoCE交换机上分配一个IP，并使用路由添加或使用以下代码。
Assign an IP on the RoCE switch, and use route add, or use the following code.
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