第一步：配置R1interface FastEthernet0/0ip address 12.0.0.1 255.255.255.0duplex autospeed auto第二步：配置R2inter
.
第一步：配置R1
interface FastEthernet0/0
ip address 12.0.0.1 255.255.255.0
duplex auto
speed auto
第二步：配置R2
interface FastEthernet0/0
ip address 12.0.0.2 255.255.255.0
duplex auto
speed auto
第三步：ping测试
R1#ping 12.0.0.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 12.0.0.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 16/36/64 ms
