Re: RPF Query!!!!!!!!!!

There is no RPF in that scenario and that's what would happen.
However, with RPF, when each of the routers receives copy of the
traffic from non-RPF interface, it will drop it.

--
Marko Milivojevic - CCIE #18427
Senior Technical Instructor - IPexpert
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On Thu, Nov 18, 2010 at 14:21, CCIE KID <eliteccie_at_gmail.com> wrote:
> No marko can u be little more clear
> wat is ur scenario deals wid RPF
>
>
> On Thu, Nov 18, 2010 at 7:47 PM, Marko Milivojevic <markom_at_ipexpert.com>
> wrote:
>>
>> A---B
>> | X |
>> C---D
>>
>> So, we have full mesh of connections between A, B, C and D. Source is
>> attached to A. Source sends packet, A replicates it to B, C and D. C
>> replicates the packet to B and D (B and D receive their 2nd copy of
>> the same traffic). When B receives this traffic for C it replicates it
>> to D (3rd copy), and back to A. A replicates it back to C, D... etc
>> etc etc. You get the idea?
>>
>> --
>> 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 Thu, Nov 18, 2010 at 14:10, CCIE KID <eliteccie_at_gmail.com> wrote:
>> > Hey i know the RPF check happens every time when a multicast packet
>> > comes to
>> > router to check whether the same interface can be used to reach the
>> > source
>> > of the multicast feed.Why does this has been done?? To avoid loops!!!!
>> > *WHy
>> > RPF check is mandatory for a multicast packet*?
>> > If to avoid loops Can u give me a classic case of loop formation in
>> > multicasting when RPF is not present
>> >
>> >
>> > --
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>> >
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>> >
>
>
>
> --
> With Warmest Regards,
>
> CCIE KID
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