Need Help With Particular NAT Setup

[dmacias066]

Hi all, first post over here whoo!

I have a question, but first heres the scenario I have and what I'm trying to do.

A customer that we recently acquired monitors their sites using certain IP addresses (no suprise there, pretty typical right), well when we bought them we changed their IP scheme to fall in line with the rest of the network. To make a long story short heres the deal. They monitor "DeviceA" using this local IP address (10.200.10.65), well all the sites use a 192.168.31.0/24 scheme so we do NAT at the router to translate the local IP to the site subnet (for this example we'll use 10.6.223.0/24). This site we converted NAT's 192.168.31.65(inside) -----> 10.6.223.65(outside) so anyone outside that site looking to reach 10.6.223.65 can do so, while the devices stay hot swappable between sites with a config of 192.168.31.65. Well they need to be able to continue to monitor "DeviceA" from the address 10.200.10.65, while our team monitors the same device, but from 10.6.223.65. Is there a way to NAT that one local 192 address to both 10.200.10.65 AND 10.6.223.65? I was using this config

ip nat inside source static network 192.168.31.65 10.6.223.65 /32 no-alias

ip nat inside source static network 192.168.31.65 10.200.10.65 /32 no-alias

But as some of you experienced members can probably tell off the bat, it didnt work. That 192 address is already mapped to the 10.6.223.65, I didnt think the NAT pool would be a great solution given that the two addresses are so far apart from each other, BUT if someones got any tricks please share. Hopefully I explained myself completely and concisely. Let me know what yall think.

[Rich Uline · Accepted solution]

dmacias066,

Have you tried appending the 'extendable' keyword to your static nat statements?

Router#(config)ip nat inside source static network 192.168.31.65 10.6.223.65 /32 extendable no-alias
Router#(config)ip nat inside source static network 192.168.31.65 10.200.10.65 /32 extendable no-alias

[paul driver]

Hello

try:

ip nat inside source static network 192.168.31.65 10.6.223.65 extendable

ip nat inside source static network 192.168.31.65 10.200.10.65 extendable

res
Paul

[dmacias066]

Thanks for the quick response folks. The router took my commands after adding the "extendable" to it. Let me test the function before I go about marking this issue as resolved! 

[dmacias066]

Thanks everyone! I had to do additional specific-to-me configuration to get this working but the "extendable" keyword and the end of the command accomplished what I was wanting to do. Thanks again!