Re: Null0 Route

Sweet - If R1 doesn't have a summary route to null 0 interface, it will
again forward to R2 and routing loop occurs.

Thanks Marko for activating my brain for thinking!

Regards,

Bilal H

On Sat, Nov 13, 2010 at 8:56 PM, Marko Milivojevic <markom_at_ipexpert.com>wrote:

> {192.168.0.0/24}----[R1]----[R2]----{internet<http://192.168.0.0/24%7D----[R1]----[R2]----%7Binternet>
> }
>
> Imagine R1 having the default route to R2. Also, imagine R2 having the
> route to 192.168.0.0/16 (which covers 192.168.0.0/24).
>
> Packet arrives from {internet} to R2 with destination IP of
> 192.168.1.1. R2 looks up the routing table and decides packet needs to
> go to R1. What will happen with this packet on R1?
>
> --
> Marko Milivojevic - CCIE #18427
> Senior Technical Instructor - IPexpert
>
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>
> On Sat, Nov 13, 2010 at 04:35, Bilal Hansrod <bilal.hansrod_at_gmail.com>
> wrote:
> > Hello Everyone,
> >
> > When we summarise inter-area routes in OSPF using area command, a route
> is
> > create pointed to null0 interface. I know it is created to prevent
> routing
> > loops. Can anyone explain with example? I did some research but unable to
> > grasp the topic, Is it same in EIGRP and BGP.
> >
> > Anyone's help will be much appreciated.
> >
> > Regards,
> >
> > Bilal Hansrod
> >
> >
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Received on Sat Nov 13 2010 - 21:11:59 ART