NAT Two External Addresses to One Internal Address

Meanwhile, at the comp.dcom.sys.cisco Job Justification Hearings, SCAdmin chose the tried and tested strategy of:

Should be. One possible reason for this would be if you had two broadband connections into one router, you could NAT both back to one server [say, an email server] for resilience.

I have been pondering this and could not figure out if the router would accept it.

Turns out it does - seems quite reasonable to me.

ip nat inside source static udp 10.1.3.139 328 1.1.1.1 328 extendable ip nat inside source static udp 10.1.3.139 328 1.1.1.2 328 extendable

Weirdly - it seems to me - I did not type the mysterious extendable so it must be the default.

router(config)#$static udp 10.8.37.139 64328 1.1.1.1 64328

router(config)#$de source static udp 10.8.37.139 64328 1.1.1.2 64328

So yes, seems like a decent plan if you need some workaround or migration process. IDEAL!

Clearly, possibly confusing as a long term solution, however NAT is intrinsically confusing so a little more confusion probably won't hurt too much:)

Have fun.