1、一、配置基本的拓扑结构由于配置三层交换通信，R3属于上次实验遗留下的，在本次实验中关闭相应的接口，S1、S2是本次实验配置重点
6、六、测试网络的联通性[R1]ping -c 1 10.0.30.2PING 10.0.30.2: 56 data bytes, press CTRL_C to breakReply from 10.0.30.2: bytes=56 Sequence=1 ttl=254 time=2 ms--- 10.0.30.2 ping statistics ---1 packet(s) transmitted1 packet(s) received0.00% packet lossround-trip min/avg/max = 2/2/2 ms
