RE: Multicast

Hello Brian, I labed it today, as you said the only extneded ping can source from specific IP address but still didn't catch the problem, I tried debug ip mpacket detail, show ip mroute count to see the RPFfailure, mtrace form the source to desintaion and vice versa. below my toplogy : I noticed another strange thing, When I pinged from R6's f0/0, I got reply only from vlan 29 interface of SW1 for two packets only and then stopped !! I tried SPT-threshold infinity command on SW1 also.Every device in the topology learned the RP information correctly, I checked the multicast routing table for OIL and IIL, everthings were fine. f0/0 source---------------R6--------R4 (candidate RP with higher priority(BACKUP RP)) | | | R1 RP (I used BSR, R1 is the mapping agent and candidate-RP as well) | | SW3 | |vlan 29 between four !
 switches | ------------- SW1 igmp join here on this SVI 77 Sorry for this long question, I spent four hours to troubleshoot without any luck, any further help will highly appreciated !! :'(Thank you very much . From: mohd-mousa_at_hotmail.com
To: bdennis_at_ine.com; ccielab_at_groupstudy.com
Subject: RE: Multicast
Date: Tue, 25 Sep 2012 20:43:49 +0000

Hello Brian,
 
I used regular ping without specifynig anything like ping 239.x.x.x, also when I used ping 239.x.x.x source from where the question should (f0/0) it was working fine, but when I uesed the
extended ping command, I specified the interface f0/0 and the ip address of it.
 
Thanks alot for your concern :)
 
 
 
 
 

 
> From: bdennis_at_ine.com
> To: mohd-mousa_at_hotmail.com; petesccie_at_gmail.com; ccielab_at_groupstudy.com
> Date: Tue, 25 Sep 2012 14:49:52 -0500
> Subject: 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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Received on Sun Sep 30 2012 - 23:27:43 ART