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NAT Pool?

kronikd22
Level 1
Level 1

Hello,

Here is my situation...

I have around 20 or so workstations on the 10.79.15.0 /24 network. These workstations use DHCP.

These workstations need to communicate with another network, and they need to have NATTED IP addresses.

The NATTED IP address range I have been given for these workstations is 192.168.50.0 /25.

There needs to be a one-to-one translation (no overload). I am assuming I would need to build a NAT pool, but it doesnt seem to be working for me. I know routing and everything works, because I can do a single static translation. For example...

ip nat inside source static 10.79.15.1 192.168.50.1

That translation works fine if I set it up like that.

However, the workstations are not static addresses....and I would like to implement the pool of outside addresses.

How would I go about doing so?

Here is what I was thinking...

ip nat pool TEST 192.168.50.0 192.168.50.127 prefix-length 25

ip nat inside source list 100 pool TEST

ip access-list 100 permit 10.79.15.0 0.0.0.255

That is what I was thinking, but it doesnt work. Am I missing something?

(PS - I know about adding the "inside/outside" on the interfaces. That is not the problem)

3 Replies 3

sachinraja
Level 9
Level 9

Hello,

Can you change the NAT pool starting from 192.168.50.1 to .127? Also enable ip subnet-zero on your router to make sure it does not ignore the subnet zero addresses... also do a debug ip nat and see the output... refer to this doc..

http://www.cisco.com/en/US/tech/tk648/tk361/technologies_configuration_example09186a0080094e75.shtml

hope this helps.. rate replies if found useful..

Raj

jackyoung
Level 6
Level 6

Please provide more config, i.e. the section w/ NAT command.

jarvar832004
Level 1
Level 1

the config looks ok to me. Please check if you get hits on the access list 100 for the customer.