We have router with one ISP wan link conection and ISP has given a pool of 14 static IP address. For one static IP we have configured a static source nat
Internal server IP - 10.1.1.1 /24
ip nat inside source static 10.1.1.1 ISP1_IP_address.
ip nat outside
on int fast0
ip nat inside
ip add 10.1.1.100 255.255.255.0
Now we have another ISP ( ISP2 ) and they have given another subnet of 14 static IP. We plan to terminate this connection on second serial interface.
How can we access our existing internal server 10.1.1.1 from ISP2 ip address pool and also from ISP1 ?
Our objective is, some remote offices will access internal server by using ISP1 static IP address and some remote offices will use ISP2 static IP address.
Outbound connections which are originated from inside subnet of the router are load shared using access list -nat and setting up the Next hop to ISP1 and ISP2 router.
Please share the experience of the scenario.
You should be able to do it if you use the extendable keyword off of your nat statement:
ip nat insid sourc static 10.1.1.100 ISP1 extendable
ip nat insid sourc static 10.1.1.100 ISP2 extendable
Your translation tables should keep things separated so traffic will return to from which it came.....