Re: multicast first ping puzzel!!

From: Adam Elghafri (ccie.adam@gmail.com)
Date: Mon Sep 29 2008 - 06:56:54 ART

to Jonny...

yes of course.. i see the RP and the mapping and everything.....

i am using ospf area 0 .....

On Mon, Sep 29, 2008 at 3:06 PM, Jonny English <redkidneybeans@gmail.com>wrote:

> check your routing table.
>
> can you see the RP address in the routing table on all 3 routers?
>
> what routing protocol are you running over the hub-n-spoke frame-relay?
>
>
> On Mon, Sep 29, 2008 at 9:11 PM, Adam Elghafri <ccie.adam@gmail.com>wrote:
>
>> 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
>>>> >>
>>>> >>
>>>> >> Blogs and organic groups at http://www.ccie.net
>>>> >>
>>>> >>
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>>>> >>
>>>> >>
>>>> >>
>>>> >>
>>>> >>
>>>> >>
>>>> >>
>>>> >>
>>>> >
>>>>
>>>>
>>>> --
>>>> Adam - Dubai
>>>>
>>>>
>>>> Blogs and organic groups at http://www.ccie.net
>>>>
>>>> _______________________________________________________________________
>>>> Subscription information may be found at:
>>>> http://www.groupstudy.com/list/CCIELab.html
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>> --
>>> Thank You,
>>>
>>
>>
>>
>> --
>> Adam - Dubai
>>
>
>
>
> --
> Thank You,
> 

-- 
Adam - Dubai

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

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