多个路由器互通（静态路由）无单臂路由（简单版）

开启端口并配ip地址

• 维护1

Router>en
Router#conf t
Router(config)#int g0/0
Router(config-if)#no shutdown 
Router(config-if)#ip address 192.168.10.254 255.255.255.0
Router(config-if)#exRouter(config)#int g0/1
Router(config-if)#no shut
Router(config-if)#no shutdown 
Router(config-if)#ip address 10.10.10.1 255.255.255.0

• 维护2

Router#conf t
Router(config)#int g0/1
Router(config-if)#no shutdown
Router(config-if)#ip address 20.20.20.1 255.255.255.0
Router(config-if)#ex
Router(config)#int g0/0
Router(config-if)#no shutdown
Router(config-if)#ip address 192.168.30.254 255.255.255.0

• 维护3

Router>en
Router#conf t
Router(config)#int g0/0
Router(config-if)#no shutdown 
Router(config-if)#ip address 192.168.20.254 255.255.255.0
Router(config-if)#ex
Router(config)#int g0/1
Router(config-if)#no shutdown 
Router(config-if)#ip address 30.30.30.1 255.255.255.0

• 维护中转（要看清哪个端口对应哪个ip地址）

Router>en
Router#conf t
Router(config)#int g0/1
Router(config-if)#no shutdown 
Router(config-if)#ip address 20.20.20.2 255.255.255.0
Router(config-if)#exRouter(config)#int g0/2
Router(config-if)#no shutdown 
Router(config-if)#ip address 30.30.30.2 255.255.255.0
Router(config-if)#exRouter(config)#int g0/0
Router(config-if)#no shutdown 
Router(config-if)#ip address 10.10.10.2 255.255.255.0

运用静态路由让电脑互相通讯

• 维护1

Router>en
Router#conf t
Router(config)#ip route 192.168.20.0 255.255.255.0 10.10.10.2
Router(config)#ip route 192.168.30.0 255.255.255.0 10.10.10.2
Router(config)#ex
//查看路由表（最好每次做完都查看路由表，看看是否添加成功）
Router#show ip route10.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C       10.10.10.0/24 is directly connected, GigabitEthernet0/1
L       10.10.10.1/32 is directly connected, GigabitEthernet0/1192.168.10.0/24 is variably subnetted, 2 subnets, 2 masks
C       192.168.10.0/24 is directly connected, GigabitEthernet0/0
L       192.168.10.254/32 is directly connected, GigabitEthernet0/0
S    192.168.20.0/24 [1/0] via 10.10.10.2
S    192.168.30.0/24 [1/0] via 10.10.10.2Router#

• 维护2

Router#conf t
Router(config)#ip route 192.168.10.0 255.255.255.0 20.20.20.2
Router(config)#ip route 192.168.20.0 255.255.255.0 20.20.20.2
Router(config)#

• 维护3

Router#conf t
Router(config)#ip route 192.168.10.0 255.255.255.0 30.30.30.2
Router(config)#ip route 192.168.30.0 255.255.255.0 30.30.30.2

• 维护中转（需要写维护1-维护3的中转过程）
• 这些虽表明是哪台维护电脑的，但操作是在维护中转进行操纵（下面备注是让明白从哪里出发）

// 从维护1出发的，192.168.10.254
Router#conf t
Router(config)#ip route 192.168.20.0 255.255.255.0 30.30.30.1
Router(config)#ip route 192.168.30.0 255.255.255.0 20.20.20.1
Router(config)#
Router(config)#
// 从维护2出发的，192.168.30.254
Router(config)#ip route 192.168.10.0 255.255.255.0 10.10.10.1
Router(config)#ip route 192.168.20.0 255.255.255.0 30.30.30.1
Router(config)#
Router(config)#
// 从维护3出发的，192.168.20.254
Router(config)#ip route 192.168.10.0 255.255.255.0 10.10.10.1
Router(config)#ip route 192.168.30.0 255.255.255.0 20.20.20.1
Router(config)#
Router(config)#ex//查看路由表，10，20，30的端口被添加成功
Router#show ip route10.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C       10.10.10.0/24 is directly connected, GigabitEthernet0/0
L       10.10.10.2/32 is directly connected, GigabitEthernet0/020.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C       20.20.20.0/24 is directly connected, GigabitEthernet0/1
L       20.20.20.2/32 is directly connected, GigabitEthernet0/130.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C       30.30.30.0/24 is directly connected, GigabitEthernet0/2
L       30.30.30.2/32 is directly connected, GigabitEthernet0/2
S    192.168.10.0/24 [1/0] via 10.10.10.1
S    192.168.20.0/24 [1/0] via 30.30.30.1
S    192.168.30.0/24 [1/0] via 20.20.20.1

• 接下来就是ping通（只要不是 100% loss）就是ping得通的，再重新ping一次
• 记得先查本身ip，子网，网关：ipconfig