Hi there, I was asked by one of my friends is it possible to have two IP addresses on same NIC card, it sound incorrect to me but maybe someone thinks the otherwise... i think we can bind different protocols to same NIC, but not two instances of the same protocol to one NIC.. Any +ve ideas will be greatly appreciated thanks in advance..

You absolutely CAN have two IP's on one NIC but it depends on the OS. Windows NT, 2000, XP support this. The number of IP's varies between OSs, and I believe it is unlimited on XP but I can't swear to it. But to answer your question, it most certainly is possible to have multiple IPs for one card. Its used on Web server for example.

Having more than one host name for the same ip address is not quite the same as having more than one ip address in My Network Places. If you install a protocol, that protocol becomes unavailable to install again. There is a utility from http://www.netswitcher.com which allows you to easily switch configurations from your home network and the one you use at work.

Rctech, I'm not sure what that has to do with his question. No one mentioned anything about having more than one host name. The question was can you have more than one IP address on one network card and the answer is, Yes you most certainly can. You say that "If you install a protocol, that protocol becomes unavailable to install again". That may be true but it seem irrelevant. You don't need to install IP twice, you just need to configure addtional IP addresses. Netswitcher is going down a whole other road.

actually if you use IPswotch (software) you can have as many configurations as you want per NIC.

YOU CANNOT HAVE MULTIPLE IP's!!!!!! your ip is assigned to your MAC address and once they are connected only your isp can change it but only one ip per MAC.

YOU ARE ABSOLUTELY WRONG!!!! (do you guys even read the question before you give an answer) Nobody said JACK about an ISP. This should answer your question. (It's right off of the Microsoft support Site)http://support.microsoft.com/default.aspx?scid=kb;en-us;q156772 And about the ISP MAC address thing, technically, with cable modems, the MAC address used is the one of the CABLE MODEM itslef, NOT YOUR NIC (you can change you NIC a thousand times and your ISP could give a D@m!! But try to hook up your buddies cable modem over your house[if he's out of your node] and no go) With DSL, since it is PPOE (which is really like dialup), you are authenticated by your NAME & PASSWORD. (and how the actual line is run, and a bunch of other techie stuff I'm not about to go into.) to all the ones who would say that I'm too vague, I KNOW, but no more so than "YOU CANNOT HAVE MULTIPLE IP's!!!!!!"