思科双路由器热备份配置模型

1、①、PC1（192.168.10.100）和PC2（192.168.200.100），代表处于不同子网的两台客户机，IP设置为自动获取模式。Switch1和Switch2分别是子网的接入交换机。分配的管理地址为：Switch1（192.168.10.2）和Switch2（192.168.20.2）。

②、网络参数由DHCP下发。如果Switch1和Switch2这两台交换机无法配置DHCP服务，就必须将DHCP服务配置在路由器Router1和Router2上，则需要分别在路由器的Ethernet0扩展槽上加装HWIC-4ESW模块。

③、Router1和Router2为两台互为热备份的路由器。

④、Router0和Switch0组成的子结构为验证子结构，用来模拟局域网外的验证主机或者互联网上的某个节点。假定节点的IP地址为172.16.10.99。

1、①、按实际需求，摆放好设备的位置。在实验模型中，假定Switch1和Switch2两台接入交换机无法配置DHCP服务。故在路由器的Ethernet0扩展槽上加装有HWIC-4ESW模块。

②、PC1和PC2的网线分别接在Switch1和Switch2的FastEthernet0/1～24的任意端口上。

③、Switch1的 GigabitEthernet作为上联到路由器的上联端口，GigabitEthernet0/1使用直连网线连接到Router1的FastEthernet0/0/0口；GigabitEthernet0/2使用直连网线连接到Router2的FastEthernet0/0/2口。

④、Switch2的 GigabitEthernet作为上联到路由器的上联端口，GigabitEthernet0/1使用直连网线连接到Router1的FastEthernet0/0/2口；GigabitEthernet0/2使用直连网线连接到Router2的FastEthernet0/0/0口。

⑤、Router1的GigabitEthernet0/0作为外网出口，上联到Router0的GigabitEthernet0/1；Router2的GigabitEthernet0/0作为外网出口，上联到Router0的GigabitEthernet0/2。

⑥、Router0和Switch0组成的子结构中，将Switch0的 GigabitEthernet作为上联到路由器的上联端口，GigabitEthernet0/1使用直连网线连接到Router0的FastEthernet0/0/0口。

1、Switch1的配置：

Switch>enable

Switch#configure terminal

Switch(config)#hostname Switch1

Switch1(config)#interface Vlan100

Switch1(config-if)#ip address 192.168.10.2 255.255.255.0

Switch1(config-if)#exit

Switch1(config)#interface range FastEthernet 0/1 -24

Switch1(config-if-range)#switchport access Vlan 100

Switch1(config-if-range)#exit

Switch1(config)#interface GigabitEthernet0/1

Switch1(config-if)#description To_Router1

Switch1(config-if)#switchport access Vlan 100

Switch1(config)#interface GigabitEthernet0/2

Switch1(config-if)#description To_Router2

Switch1(config-if)#switchport access Vlan 100

Switch1(config-if)#exit

Switch0(config)#ip address 192.168.10.1 255.255.255.0

Switch1(config)#exit

Switch1#write

Building configuration...

[OK]

2、Switch2的配置：

Switch>enable

Switch#configure terminal

Switch(config)#hostname Switch2

Switch2(config)#interface Vlan200

Switch2(config-if)#ip address 192.168.20.2 255.255.255.0

Switch2(config-if)#exit

Switch2(config)#interface range FastEthernet 0/1 -24

Switch2(config-if-range)#switchport access Vlan 200

Switch2(config-if-range)#exit

Switch2(config)#interface GigabitEthernet0/1

Switch2(config-if)#description To_Router1

Switch2(config-if)#switchport access Vlan 200

Switch2(config)#interface GigabitEthernet0/2

Switch2(config-if)#description To_Router2

Switch2(config-if)#switchport access Vlan 200        

Switch2(config-if)#exit

Switch0(config)#ip address 192.168.20.1 255.255.255.0

Switch2(config)#exit

Switch2#write

Building configuration...

[OK]

3、Router1的配置：

Router>enable

Router#configure terminal

Router(config)#hostname Router1

Router1(config)#ip dhcp excluded-address 192.168.10.1 192.168.10.99

Router1(config)#ip dhcp excluded-address 192.168.20.1 192.168.20.99

Router1(config)#ip dhcp pool For192.168.10.X

Router1(dhcp-config)#network 192.168.10.0 255.255.255.0

Router1(dhcp-config)#default-router 192.168.10.1

Router1(dhcp-config)#dns-server 192.168.10.1

Router1(dhcp-config)#exit

Router1(config)#ip dhcp pool For192.168.20.X

Router1(dhcp-config)#network 192.168.20.0 255.255.255.0

Router1(dhcp-config)#default-router 192.168.20.1

Router1(dhcp-config)#dns-server 192.168.20.1

Router1(dhcp-config)#exit

Router1(config)#interface Vlan100

Router1(config-if)#ip address 192.168.10.1 255.255.255.0

Router1(config)#interface Vlan200

Router1(config-if)#ip address 192.168.20.1 255.255.255.0

Router1(config-if)#exit

Router1(config)#interface GigabitEthernet0/0

Router1(config-if)#description To_Router0

Router1(config-if)#ip address 172.16.110.101 255.255.255.0

Router1(config-if)#no shutdown

Router1(config-if)#exit

Router1(config)#interface range FastEthernet0/0/0 - 1

Router1(config-if-range)#description To_Switch1

Router1(config-if-range)#switchport access vlan 100

Router1(config-if-range)#exit

Router1(config)#interface FastEthernet0/0/2 - 3

Router1(config-if-range)#description To_Switch2

Router1(config-if-range)#switchport access vlan 200

Router1(config-if-range)#exit

Router1(config)#router rip

Router1(config-router)#version 2

Router1(config-router)#network 172.16.0.0

Router1(config-router)#network 192.168.10.0

Router1(config-router)#network 192.168.20.0

Router1(config-router)#no auto-summary

Router1(config-router)#exit

Router1(config)#exit

Router1#write

Building configuration...

[OK]

4、Router2的配置：

Router>enable

Router#configure terminal

Router(config)#hostname Router2

Router2(config)#ip dhcp excluded-address 192.168.10.1 192.168.10.99

Router2(config)#ip dhcp excluded-address 192.168.20.1 192.168.20.99

Router2(config)#ip dhcp pool For192.168.10.X

Router2(dhcp-config)#network 192.168.10.0 255.255.255.0

Router2(dhcp-config)#default-router 192.168.10.1

Router2(dhcp-config)#dns-server 192.168.10.1

Router2(dhcp-config)#exit

Router2(config)#ip dhcp pool For192.168.20.X

Router2(dhcp-config)#network 192.168.20.0 255.255.255.0

Router2(dhcp-config)#default-router 192.168.20.1

Router2(dhcp-config)#dns-server 192.168.20.1

Router2(dhcp-config)#exit

Router2(config)#interface Vlan100

Router2(config-if)#ip address 192.168.10.1 255.255.255.0

Router2(config)#interface Vlan200

Router2(config-if)#ip address 192.168.20.1 255.255.255.0

Router2(config-if)#exit

Router2(config)#interface GigabitEthernet0/0

Router2(config-if)#description To_Router0

Router2(config-if)#ip address 172.16.210.101 255.255.255.0

Router2(config-if)#no shutdown

Router2(config-if)#exit

Router2(config)#interface range FastEthernet0/0/0 - 1

Router2(config-if-range)#description To_Switch2

Router2(config-if-range)#switchport access vlan 200

Router2(config-if-range)#exit

Router2(config)#interface FastEthernet0/0/2 - 3

Router2(config-if-range)#description To_Switch1

Router2(config-if-range)#switchport access vlan 100

Router2(config-if-range)#exit

Router2(config)#router rip

Router2(config-router)#version 2

Router2(config-router)#network 172.16.0.0

Router2(config-router)#network 192.168.10.0

Router2(config-router)#network 192.168.20.0

Router2(config-router)#no auto-summary

Router2(config-router)#exit

Router2(config)#exit

Router2#write

Building configuration...

[OK]

5、验证子结构Switch0的配置：

Switch>enable

Switch#configure terminal

Switch(config)#hostname Switch0

Switch0(config)#interface Vlan999

Switch0(config-if)#ip address 172.16.10.99 255.255.255.0

Switch0(config-if)#exit

Switch0(config)#interface range FastEthernet 0/1 -24

Switch0(config-if-range)#switchport access Vlan 999

Switch0(config-if-range)#exit

Switch0(config)#interface range GigabitEthernet 0/1 -2

Switch0(config-if-range)#switchport access Vlan 999

Switch0(config-if-range)#exit

Switch0(config)#ip address 172.16.10.99 255.255.255.0

Switch0(config)#exit

Switch0#write

Building configuration...

[OK]

6、验证子结构Router0的配置：

Router>enable

Router#configure terminal

Router(config)#hostname Router0

Router0(config)#interface Vlan999

Router0(config)#exit

Router0(config)#interface GigabitEthernet0/1

Router0(config-if)#description To_Router1

Router0(config-if)#ip address 172.16.110.1 255.255.255.0

Router0(config-if)#no shutdown

Router0(config-if)#exit

Router0(config)#interface GigabitEthernet0/2

Router0(config-if)#description To_Router2

Router0(config-if)#ip address 172.16.210.1 255.255.255.0

Router0(config-if)#no shutdown

Router0(config-if)#exit

Router0(config)#router rip

Router0(config-router)#version 2

Router0(config-router)#network 172.16.0.0

Router0(config-router)#no auto-summary

Router0(config-router)#exit

Router0(config)#exit

Router0#write

Building configuration...

[OK]