From: Brian Dennis (bdennis@internetworkexpert.com)
Date: Sun Oct 21 2007 - 18:03:04 ART
But it is connected to something, itself, hence the term loopback.
Packets sent out a loopback interface will be received back in on that
same loopback interface.
HTH,
Brian Dennis, CCIE4 #2210 (R&S/ISP-Dial/Security/SP)
bdennis@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
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Navid Daghighi wrote:
> Hello,
>
> I am trying to understand what a router does when PRB has been enabled
> with a route-map that has "set interface loopback 0".
>
> We ask the router to use the outbound interface loopback0 for some packets.
>
> But loopback0 is a logical interface, it is not connected to anything !
> The router will have to use a physical interface to send the packet
> somewhere.
>
> So what do we want to achieve, when we write "set interface loopback 0" ?
>
> Thanks,
> Navid
>
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