Badly configured QoS perhaps ?
What about limitation on how much of the link can be used for multicast ? Can you try adding incremental streams in smaller amounts to find at what point you have too much traffic ? Have you graphed the usage on the link to verify that the amount of bandwidth being used is indeed what you think it might be ? There are about 101 different reasons it could be performing badly, we're sort of just throwing suggestions out there. regards, Tony. >________________________________ > From: Mohammad Khalil <eng_m...@hotmail.com> >To: m...@mcadory.info >Cc: cisco-nsp@puck.nether.net >Sent: Sunday, 3 June 2012 3:22 PM >Subject: Re: [c-nsp] Multicast Issue > > >Hi , the issue seems not BW issue as according to the specifications , each TV >is supposed to consume 5M >So any ideas? > >BR, >Mohammad > >> Date: Wed, 30 May 2012 23:44:31 -0500 >> Subject: Re: [c-nsp] Multicast Issue >> From: m...@mcadory.info >> To: eng_m...@hotmail.com >> CC: cisco-nsp@puck.nether.net >> >> http://www.cardinalpeak.com/blog/?p=1054 is a good explanation of bit >> rate measurement process using WS. Use that to validate your expected >> 8Mbps stream rate. Also validate with your DSLAM operator that the >> 24Mbps you quote isn't total video and IPTV, but dedicated to video >> (or at least dedicated when video is flowing) to get your ~3 streams >> worth. >> >> Matt >> >> >> On Wed, May 30, 2012 at 1:29 AM, Mohammad Khalil <eng_m...@hotmail.com> >> wrote: >> > >> > The downstream is configured to be 24 M but the upstream is configured to >> > be 4M >> > this is the current setup , so it is for sure bandwidth issue ? >> > >> >> From: mark.ti...@seacom.mu >> >> To: eng_m...@hotmail.com >> >> Subject: Re: [c-nsp] Multicast Issue >> >> Date: Wed, 30 May 2012 08:18:57 +0200 >> >> CC: cisco-nsp@puck.nether.net >> >> >> >> On Wednesday, May 30, 2012 08:14:20 AM Mohammad Khalil >> >> wrote: >> >> >> >> > Actually its supposed for each stream to consume 8M >> >> > should i try to increase the speed limits configured ? >> >> >> >> As this is VDSL, are you sure you're actually getting 24Mbps >> >> into the house? >> >> >> >> We tested IPTv on VDSL using new copper across 50m - it was >> >> a disaster. >> >> >> >> If you can, try increasing bandwidth and see if that helps. >> >> But it definitely sounds like when you request a 2nd stream >> >> and the picture develops block noise, you're starving the >> >> link of bandwidth. >> >> >> >> Mark. >> > >> > _______________________________________________ >> > cisco-nsp mailing list cisco-nsp@puck.nether.net >> > https://puck.nether.net/mailman/listinfo/cisco-nsp >> > archive at http://puck.nether.net/pipermail/cisco-nsp/ > >_______________________________________________ >cisco-nsp mailing list cisco-nsp@puck.nether.net >https://puck.nether.net/mailman/listinfo/cisco-nsp >archive at http://puck.nether.net/pipermail/cisco-nsp/ > > > _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
