多個路由器互通（靜態路由）無單臂路由（簡單版）

開啟端口并配ip地址

• 維護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

• 維護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

• 維護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

• 維護中轉（要看清哪個端口對應哪個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

運用靜態路由讓電腦互相通訊

• 維護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#

• 維護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)#

• 維護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

• 維護中轉（需要寫維護1-維護3的中轉過程）
• 這些雖表明是哪臺維護電腦的，但操作是在維護中轉進行操縱（下面備注是讓明白從哪里出發）

// 從維護1出發的，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)#
// 從維護2出發的，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)#
// 從維護3出發的，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

• 接下來就是ping通（只要不是 100% loss）就是ping得通的，再重新ping一次
• 記得先查本身ip，子網，網關：ipconfig