Cisco路由器GRE配置 ip route 0.0.0.0 0.0.0.0 203.86.63.233 ip route 192.168.20.0 255.255.255.0 10.10.9.200 ip route 192.168.111.0 255.255.255.0 172.16.1.194 ip route 192.168.222.0 255.255.255.0 Tunnel0 ! ! ! interface Loopback10  ip address 192.168.0.1 255.255.255.0 ! interface Loopback100  ip address 192.168.237.6 255.255.255.0 ! interface Tunnel0  ip address 1.1.1.1 255.255.255.0  tunnel source FastEthernet0/0  tunnel destination 111.206.103.10 ! interface FastEthernet0/0  ip address 203.86.63.237 255.255.255.248  ip nat outside  duplex auto  speed auto  crypto map outside ! interface FastEthernet0/1  ip address 10.128.1.62 255.255.255.224 secondary  ip address 172.16.1.1 255.255.255.0  ip nat inside  duplex auto  speed auto !