开启端口，其中一个是fast etherner，另一个是ethernet；
Router>en
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#int f
% Incomplete command.
Router(config)#int f 0/0
Router(config-if)#ip add 192.168.11.11 255.255.255.0 //网管配置
Router(config-if)#no sh
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
Router(config-if)#e
Router(config)#int e 1/1
Router(config-if)#ip add 172.22.223.17 255.255.255.240
Router(config-if)#no sh
%LINK-5-CHANGED: Interface Ethernet1/1, changed state to up
