s1 s2 按照连接端口配置好port-channel
()#int range g1/0/1-2
#channel-group 1 mode active
()#int port-channel 1
#switchport mode trunk
R1:
ip route 192.168.3.0 255.255.255.0 R2互联地址
ip route 192.168.4.0 255.255.255.0 R2互联地址
R2
ip route 192.168.1.0 255.255.255.0 R1互联地址
ip route 192.168.2.0 255.255.255.0 R1互联地址