topic Re: Loopback interface in Operating System - Linux

Loopback interface

Rajendran_1 — Tue, 04 Mar 2003 07:17:19 GMT

Dear Friends,

Asking a very Basic Question :)

What is the loop back interface for ?

Can any one send me any link describing this?

Any explanation will be very usefull..

Thanks,
Rajendran.

Re: Loopback interface

Stuart Browne — Tue, 04 Mar 2003 07:33:19 GMT

Loop back interface (as in 'ifconfig lo' yes?) ?

It's the way to say "This is myself" regardless of hardware, or devices.

In a networking world, you should always be able to rely upon one fact:

loopback device = 127.0.0.1 = localhost

If you need to talk to yourself on the network (there are a number of situations where this is a good idea), you can use this.

In a non-networking environment, this device also allows you to use Network based operations, as the Loopback device initilizes the TCP stack.

As for the reasons behind why it was created, you'd probably have to read through the TCP/IP RFC's to find out.

.. probably not the best of explanations, but I hope it helps somewhat .. Possibly someone who's done more detailed work on TCP and IP stacks could give a better reasoning ..

Re: Loopback interface

Rajendran_1 — Wed, 05 Mar 2003 07:29:40 GMT

Thank you Sir...

Re: Loopback interface

Rajendran_1 — Wed, 05 Mar 2003 07:34:29 GMT

thanks

Re: Loopback interface

Sergejs Svitnevs — Wed, 05 Mar 2003 16:07:49 GMT

http://www.tldp.org/LDP/nag/node66.html

Sergejs

Re: Loopback interface

Rajendran_1 — Wed, 19 Mar 2003 14:44:20 GMT

Thanks Dear...