what is address 127.0.01 and how does it work, any one can give me an example! thx?

Question

loopback address 127.0.01, what is mean by loopback and how does it work, please show me some example, thx!

Answer 1

127.0.0.1 is the IP loopback address. Most systems that support IP have a fake "NIC" that has this address on it. It's used for having a network utility that wants to talk to another network utility on the same host.

Answer 2

A loopback address is an internal address used by most computers to, well, loopback; which basically means that if I enter 127.0.0.1 into a web browser on a computer that is not running a webserver, it will return page not found, but, if I am running a webserver on my local computer, and I enter 127.0.0.1 into the browser, I should now see a default setup page for the server. This webserver runs in the background and the page is looped back to the browser, locally, without the aid of an external DNS lookup. Any page can be assigned to this address by modifying your hosts file on your computer. You can, for example, place within your hosts file, 127.0.0.1 www.google.ca, clear your cache and then type www.google.ca into your browser and guess what, page not found comes up as you basically modifed your hosts file to indicate that www.google.ca is now 'local' to your computer. To fix this, just delete the entry for google.ca within your hosts file, but whatever you do, do not remove the 127.0.0.1 localhost entry within your hosts file.

Answer 3

In general terms it's a non public IP address that points the PC/Server to itself. Very common to see this used when connecting to a database or webserver that resides on the local machine, sometimes referred to as localhost

Answer 4

127.0.01