<div>
Yes, you can.<br />
<br />
The main benefit is that you can swap around what networks/addresses are connected at this router, and still have a consistent address which identifies the device.<br />
<br />

</div>


Yes, you can.

The main benefit is that you can swap around what networks/addresses are connected at this router, and still have a consistent address which identifies the device.



<div>
<div class="content wysiwyg-content">
I have perm router that I want to setup interface loopback0 command on. &nbsp;If my internal is on 10.0.0.0/24 and my real ip's are 63.x.x.x can i setup my loopback interface to 172.16.x.x ?<br />
<br />
What are the benefits ?
</div>
</div>


I have perm router that I want to setup interface loopback0 command on.  If my internal is on 10.0.0.0/24 and my real ip's are 63.x.x.x can i setup my loopback interface to 172.16.x.x ?

What are the benefits ?

Loopback interface for security and testing

A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.