nat网址转换

Router#conf t

Enter configuration commands, one per line. End with CNTL/Z.

Router(config)#inter f0/0

Router(config-if)#ip ad

Router(config-if)#ip address 222.0.2.1 255.255.255.0

Router(config-if)#no shut

Router(config-if)#

Router(config-if)#inter f0/1

Router(config-if)#ip address 222.0.1.2 255.255.255.0

Router(config-if)#no shut

Router(config-if)#

Router(config-if)#ex

Router(config)#ip route 192.168.1.0 255.255.255.0 222.0.1.1

Router(config)#end

Router#

%SYS-5-CONFIG_I: Configured from console by console

Router#

Router#show ip rou

Router#show ip route

Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP

D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP

i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area

* - candidate default, U - per-user static route, o - ODR

P - periodic downloaded static route

Gateway of last resort is not set

S 192.168.1.0/24 [1/0] via 222.0.1.1

C 222.0.1.0/24 is directly connected, FastEthernet0/1

C 222.0.2.0/24 is directly connected, FastEthernet0/0

Router#

Router(config-if)#inter f0/0

Router(config-if)#ip add 222.0.1.1 255.255.255.0

Router(config-if)#inter f0/1

Router(config-if)#ip add 192.168.1.1 255.255.255.0

Router(config-if)#no shut

Router(config-if)#exit

Router(config)#

Router(config)#ip route 222.0.2.0 255.255.255.0 222.0.1.2

Router(config)#end

Router#show ip route

C 192.168.1.0/24 is directly connected, FastEthernet0/1

C 222.0.1.0/24 is directly connected, FastEthernet0/0

S 222.0.2.0/24 [1/0] via 222.0.1.2

Router#conf t

Enter configuration commands, one per line. End with CNTL/Z.

Router(config)#inter f0/1

Router(config-if)#ip nat inside ?

<cr>

Router(config-if)#ip nat inside

Router(config-if)#exit

Router(config-if)#inter f0/0

Router(config-if)#ip nat outside

Router(config-if)#ex

Router(config)#ip nat inside source static ?

Router(config)#ip nat inside source static 192.168.1.2 222.0.1.3 ?

<cr>

Router(config)#ip nat inside source static 192.168.1.2 222.0.1.3

Router(config)#end

Router#

Router#show ip nat tr

Router#show ip nat translations

Pro Inside global Inside local Outside local Outside global

--- 222.0.1.3 192.168.1.2 --- ---

Router>enable

Router#show ip nat translations

Pro Inside global Inside local Outside local Outside global

icmp 222.0.1.3:16 192.168.1.2:16 222.0.2.2:16 222.0.2.2:16【ping的结果】

单臂路由：

1）划分vlan
2）端口的合并使用
1.Router(config)#hostname R1
R1(config)#interface fa0/0#要合并使用的一个端口
R1(config-if)#no shutdown
R1(config-if)#exit
R1(config)#interface fa0/0.1#分配一号接口，有多少个结合线路，就有多少个0.1->0.n
R1(config-subif)#encapsulation dot1Q 10#封装技术，vlan
R1(config-subif)#ip address 192.168.1.1 255.255.255.0#添加网关地址。
R1(config-subif)#exit
注意
一般不知道的请使用使用auto线
路由器--交叉线--路由器 路由器--交叉线--PC 路由器--直通线--交换机 交换机--直通线--PC


总结为三大步：
1）进入端口，开启服务
2）按照情况切割端口
3）封装端口及vlan和添加网关作为下一跳

参考：https://www.cnblogs.com/mchina/tag/Packet%20Tracer/

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