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IP nat order.

The configuration:

ip nat inside source list 12 interface Ethernet1 overload

ip nat inside source static tcp 192.168.100.7 80 203.144.156.67 80 extendable

ip nat inside source static tcp 192.168.100.7 203.144.156.68

In this configuration internet clients are able to browse to 203.144.156.67 . But 203.144.156.68 does not work. But when I removed the extendable line 203.144.156.67, internet clients are able to browse to 203.144.156.68 .

Why can't both external ip 203.144.156.67 & 203.144.156.68 coexists and work at the same time??? But if one is down the other will work fine..

1 REPLY
Bronze

Re: IP nat order.

The way you have configured NAT, this is the expected behavior. Once the static NAT entry is in the NAT table, it will not translate the inside host to another inside global address (which is why one works but the other doesn't). The only way I can see this working is if you configure static NAT with route-maps. Look through this link for more information:

http://www.cisco.com/en/US/products/sw/iosswrel/ps1839/products_feature_guide09186a0080087bac.html

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