1.show ip interface brief
2.show ip interface fastethernet 1/0
3.ip nat inside source static tcp 192.168.1.111 53026 interface FastEthernet 1/0 53026
4.ip nat pool pool_name start_IP end_IP netmask
5.show ip nat static per_user //查看进程数命令
6.show ip nat translation //查看地址转换情况
7.ip nat translation per_user 192.168.1.0 150 //对IP段限制进程数，普通浏览网页200个连接数已经足够，P2P可以轻易达到700以上
8.clear ip nat translation * 配置一条静态NAT项目（必须在全局配置模式下执行）
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R2632(config)# ip nat inside source static tcp 192.168.1.125 12345 interface fastethernet 1/0 12345
反操作，删除一条静态NAT项目：
必须在全局配置模式(config)或者接口配置模式(config-if)下执行
全局配置模式(config):
R2632(config)# no ip nat inside source static tcp 192.168.1.125 12345 interface fastethernet 1/0 12345
接口配置模式(config-if):
R2632(config-if)# no ip nat inside
或者
R2632(config-if)# no ip nat inside
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