Broadband Connection

[anirban0310]

I have two broadband connection.One is BSNL Dataone and another one is Airtel.Previously I had only BSNL Dataone and was using through switch.Now I want to use  both these connection through switch and so that if one broadband connection will down other will work automatically.So the users will not be affected,because in my office internet connection is very essential.I want to do this without purchasing any new hardware.

Most important thing is that these two connection have different series of ip address.Users are using Windows XP.

Please help me as earliest.

[wyatt]

This is do-able, but I don't have enough information to advise you. Do you have a router of some type? The router is what actually gets the IP address. To be able to have a backup network, your router has to be complex enough to have multiple interfaces ( a real router - like a Cisco that has multiple interfaces).

An alternative would be to use a Windows Server with multiple network cards and setup Routing and Remote Access. Do a search on "demand dial routing" to see what come up...

[rthompson80819]

This is what you are looking for, although this unit has been discontinued, it was a low cost small business or consumer unit.  You may be able to find it on eBay.

http://www.dlink.com/products/?sec=1&pid=452

Almost everything on the market now is a commercial unit and can be expensive.

Thee advantage of something like this is two fold.  It provides redundant connections so if one service fails, the other still works.  Additionally, the bandwidth of both services can be added together for faster speeds when they are both working.