• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 297
  • Last Modified:

Switching ISPs without loss of service - Multiple Gateways

Here's the situation:

I have a windows 2003 server with ISA 2004 on it.

I have my DSL internet into a router, then to the ISA server.
I'm switching to a local Cable company.

So, now DSL and Cable go into a switch and then into the ISA server.
I have 5 static IPs with each provider.

If i set the gateway for the network card in the server to the DSL gateway, my DSL WAN IPs work. The cable IPs don't.
If i set the gateway for the network card in the server to the Cable gateway, my Cable WAN IPs work. The DSL IPs don't.

I don't want to just switch my DNS to the new Cable IPs, because I'll likely loose some email in the transition.

Any ideas?  Ideally, i'd like both sets of IPs working so i can switch seamlessly.

Thanks in advance,

2 Solutions
Get a load balancing/fault tolerant router capable of supporting two broadband connections - such as the Linksys RV042.  http://www.linksys.com/servlet/Satellite?c=L_Product_C2&childpagename=US%2FLayout&cid=1115416833192&pagename=Linksys%2FCommon%2FVisitorWrapper
You won't loose email, it will be queued for retry on the sender's side.
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Tackle projects and never again get stuck behind a technical roadblock.
Join Now