I m facing a issue ie I have a internet connectivity from one ISP at router 1 then goes to a switch . This switch connected to other router 2 for redundant line by other ISP. Now i have done static NAT with a server IP , which is accessible from both outside and inside at router 1. Now if this first ISP link gets down then it should be accessible by other ISP but I have done NAT with first router's IP which has been provided by first ISP so i m confused that what should I do now because I cant do NAT with other IP on other router within second ISP IP range.Means this global IP should be same, it doesnt matter which ISP I m using.
Thanx and Regards,
Thanx for reply . So I m thinking to NAT this LAN IP with other ISP's public IP. It means I have to use 2 IPs for this . Am I right ?
thanx and regards,
Yes you need to nat with second ISP public pool ip in second isp router with the local lan private ip of the server.
Hope to help