端口编号，serial 1/0
port type slot number/port number，slot模块，板卡
Usually, each port is given a label of port type, slot (the location of the module), and port number. To configure a port on a modular card, it is necessary to specify the interface using the convention "port type slot number/port number." For example, given serial 1/0, the type of interface is a serial interface, the slot number where the interface module is installed is slot 1, and the port referenced on that serial interface module is port 0.
Ge 0/0
Fa 0/0
Fa是什么意思？InterFace中的Fa？
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