全网以互联互通!如有什么疑问去看上一篇文章(拓扑图)!
接下来我们做NAPT 有VLAN2 VLAN 3的右边拓扑 作为内网!
左边作为外网!
允许VLAN2 192.168.2.0 这个网段 进行网络地址转换访问外网
下面对Router2进行配置
Router2
Router>enable
Router#configure terminal
Router(config)#interface serial 2/0
Router(config-if)#ip nat outside
Router(config-if)#exit
Router(config)#interface fastEthernet 1/0
Router(config-if)#ip nat inside
Router(config-if)#exit
Router(config)#access-list 1 permit 192.168.2.0 0.0.0.255
Router(config)#ip nat inside source list 1 interface serial 2/0 overload
(不用创建地址池,直接借用F1/0的IP地址,F1/0获取什么地址就使用什么地址。这样配置NAT超载就从5步骤变成4步骤,该方法同样适用于静态接入)
用VLAN2 PC ping VLAN 5! 发现可以ping通
PC>ping 192.168.5.2
Pinging 192.168.5.2 with 32 bytes of data:
Reply from 192.168.5.2: bytes=32 time=219ms TTL=124
Reply from 192.168.5.2: bytes=32 time=218ms TTL=124
Reply from 192.168.5.2: bytes=32 time=172ms TTL=124
Reply from 192.168.5.2: bytes=32 time=172ms TTL=124
Ping statistics for 192.168.5.2:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 172ms, Maximum = 219ms, Average = 195ms
路由器上显示:
Router#show ip nat translations
Pro Inside global Inside local Outside local Outside global
icmp 60.12.3.5:16 192.168.2.2:16 192.168.5.2:16 192.168.5.2:16
icmp 60.12.3.5:17 192.168.2.2:17 192.168.5.2:17 192.168.5.2:17
icmp 60.12.3.5:18 192.168.2.2:18 192.168.5.2:18 192.168.5.2:18
icmp 60.12.3.5:19 192.168.2.2:19 192.168.5.2:19 192.168.5.2:19
icmp 60.12.3.5:20 192.168.2.2:20 192.168.5.2:20 192.168.5.2:20
期末考试两篇内容已更新完成!希望对同学们有帮助,别挂科!
原创:胡斌
我会从简单到难的发表一些我学过的知识,希望能给一些想入门的朋友帮助,也希望找一些志同道合的朋友、老师 给我些指教。 QQ 276200261!