Re: Null0 Route

Glad I could help :-)

--
Marko Milivojevic - CCIE #18427
Senior Technical Instructor - IPexpert
FREE CCIE training: http://bit.ly/vLecture
Mailto: markom_at_ipexpert.com
Telephone: +1.810.326.1444
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On Sat, Nov 13, 2010 at 05:11, Bilal Hansrod <bilal.hansrod_at_gmail.com> wrote:
> 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}
>>
>> 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
>>
>> FREE CCIE training: http://bit.ly/vLecture
>>
>> Mailto: markom_at_ipexpert.com
>> Telephone: +1.810.326.1444
>> Web: http://www.ipexpert.com/
>>
>> 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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