Re: multicast first ping puzzel!!

From: Adam Elghafri (ccie.adam@gmail.com)
Date: Mon Sep 29 2008 - 06:11:29 ART

yes...

actually its not the first time.. it almost always happens to me..!!!!

ok ... let me make my judgment here...

if u notice that the RP is the way ... so before the Source-tree is
estabilshed the ping will be successfull...

however, after the source-tree establishes... a somehow problem happnens due
to the fact that the RP still in the way !!!!

now to prove this.. when i do a p2p tunne between r1 and r3.. IT WORKS!!!!

my reasoning....is due to the tunnel which is "another" path that does not
have RP in it!!!

On Mon, Sep 29, 2008 at 2:36 PM, Jonny English <redkidneybeans@gmail.com>wrote:

> you try ip pim nbma on the hub?
>
>
> On Mon, Sep 29, 2008 at 8:02 PM, Adam Elghafri <ccie.adam@gmail.com>wrote:
>
>> even with a proper extended ping.... even with a reload
>>
>>
>> i will give u an example...
>>
>>
>> suppose frame-relay hub and spoke.. R1 R2 R3... R2 is the hub and the RP
>> and
>> the MP
>>
>>
>> - - - - -R1
>> - - - -
>> R2----------------------
>> - - - -
>> - - - - - R3
>>
>>
>> now, when i try to ping from R1 to R3 .. the first ping makes it ... but
>> the
>> rest dont ...!!!
>>
>>
>> of course nbma mode is enabled on R2...
>>
>> any explination
>>
>> On Mon, Sep 29, 2008 at 1:07 PM, Julian Pentermann <jpentermann@gmail.com
>> >wrote:
>>
>> > Hi
>> >
>> > Are you getting the same issue when you are using a proper extended
>> ping?
>> >
>> > On Mon, Sep 29, 2008 at 9:27 AM, Adam Elghafri <ccie.adam@gmail.com
>> >wrote:
>> >
>> >> sorry i should put (rep 100) to make more sense...
>> >>
>> >>
>> >> so replace Rack1R1#ping 224.1.1.1 (((rep 100)))
>> >>
>> >> On Mon, Sep 29, 2008 at 12:55 PM, Adam Elghafri <ccie.adam@gmail.com>
>> >> wrote:
>> >>
>> >> > hi group
>> >> >
>> >> > ive been facing an issue over and over every time i do sparse mode
>> >> > multicast...
>> >> >
>> >> >
>> >> > almost 70% of the time when i try a ping test from one side to the
>> >> other,
>> >> > the first ping make it and the other fails... looks like this
>> >> >
>> >> >
>> >> > Rack1R1#ping 224.1.1.1
>> >> > Reply to request 0 from 130.1.245.4, 700 ms
>> >> > Reply to request 0 from 130.1.245.4, 696 ms
>> >> > Reply to request 0 from 130.1.245.4, 696 ms.................
>> >> >
>> >> >
>> >> > see the dots!!
>> >> >
>> >> >
>> >> > now any one faced such a phenomena and could solve it ?
>> >> >
>> >>
>> >>
>> >>
>> >> --
>> >> Adam - Dubai
>> >>
>> >>
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>> >>
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>> >>
>> >
>>
>>
>> --
>> Adam - Dubai
>>
>>
>> Blogs and organic groups at http://www.ccie.net
>>
>> _______________________________________________________________________
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>
>
> --
> Thank You,
> 

-- 
Adam - Dubai

Blogs and organic groups at http://www.ccie.net

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