Re: Multicast

Have you checked to see what source IP address that the extended ping is
using and done a RPF check against it? When you do a standard ping to
multicast address the source interface is all interfaces whereas with the
extended ping you can specify the source interface. Also you might try to
mtrace from the client to the source.

-- 
Brian Dennis, CCIEx5 #2210 (R&S/ISP-Dial/Security/SP/Voice)
bdennis_at_ine.com
INE, Inc.
http://www.INE.com <http://www.ine.com/>
On 9/25/12 9:10 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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