Re: Multicast

Moses,

Check your RPF check on the unicast path to the shortest path tree, typically when you get one or two ping replies then nothing this is indicative of a SPT failure.. Test this buy putting the SPT threshold to infinity on the interface and reping with extenders parameters.

Regards,
 Joe Sanchez

( please excuse the brevity of this email as it was sent via a mobile device. Please excuse misspelled words or sentence structure.)

On Sep 25, 2012, at 11:10 AM, Mohammad Mousa <mohd-mousa_at_hotmail.com> wrote:

> Hi Peter,
>
> I was working on real gear, My case was really strange because the normal ping worked over and over but the extended ping worked and got response for two reply only. I thought this because the last hop router, when it changed from shared tree to source tree. I tried to put ip pim spt infinity !! but it wasn't work and no reply I got.
> Brian explained it at INE video, but seem I don't understand it well. :'(
>
> Any idea?Btw thank you for your answer.
>
>> Subject: Re: Multicast
>> From: petesccie_at_gmail.com
>> Date: Tue, 25 Sep 2012 16:49:41 +0100
>> To: mohd-mousa_at_hotmail.com
>>
>> Is this on real kit or gns3? I've seen strange issues with gns3 and multicast in the past. If gns3 - restart the lab kit and do your extended ping first and see what results you get..
>> I've seen multicast work fine in gns3, but then stop working after a few mins testing & sending some large repeated multicast pings etc.
>>
>> Rgds,
>> Peter
>>
>> Sent from my iPhone
>>
>> On 25 Sep 2012, at 04:32 p.m., Mohammad Mousa <mohd-mousa_at_hotmail.com> wrote:
>>
>>> Hi folks, I have strange issue, I confiugred multicast network and eveything is working fine. When I used regular ping 239.x.x.x repeat 300 source X I got full response. but when I used the extnded pingcommand I got only two responses and no reachibility after that. Any advices, any guidance before posting the diagram,Thanks in advance !
>>>
>>>
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Received on Tue Sep 25 2012 - 14:59:03 ART