After reading this thread it sounds like it could be DSLAM related. Our brand (OCCAM/Calix) has a few interesting gotchas along these lines. I take it you don't see the same behavior directly connected to the switch?
Also this is a Cisco-oriented list, while some people are familiar with other vendors, other gear isn't exactly the group's expertise. Cheers - Ross -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Mohammad Khalil Sent: Monday, June 04, 2012 6:17 PM To: [email protected] Cc: [email protected] Subject: Re: [c-nsp] Multicast Issue Hi , I am using IGMP v2 Regarding the core switch , its non Cisco switch and i only configured IGMP quierer to server for the Vlan created for TVs (STBs) BR, > Subject: Re: [c-nsp] Multicast Issue > From: [email protected] > Date: Mon, 4 Jun 2012 13:11:14 +0300 > CC: [email protected]; [email protected]; [email protected] > To: [email protected] > > Hi there, > > A few questions: > > 1. What IGMP version is used? > 2. What kind is the platform - 65/76 and if so - what modules are used. > > If this is an IGMPv3 - there is a well known issue with it. I should search a > little for that but S,G channels are not properly snooped by the switch, > which results in broadcast manner you described. > > BR, > Dani > On Jun 4, 2012, at 12:14 PM, Mohammad Khalil wrote: > > > > > Hi all , thanks for all replies > > Seemingly after i connected a laptop with wireshark , there seem a lot of > > broadcast which reach as well unused ports > > Bandwidth supposed to be 5M for each stream requested , so is it possibly > > CPE ? > > We have configured IGMP quierer on the Core Switch > > > > BR, > > > > Date: Sat, 2 Jun 2012 23:25:22 -0700 > > From: [email protected] > > Subject: Re: [c-nsp] Multicast Issue > > To: [email protected]; [email protected] > > CC: [email protected] > > > > 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 <[email protected]> > > To: [email protected] > > Cc: [email protected] > > 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: [email protected] > >> To: [email protected] > >> CC: [email protected] > >> > >> 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 <[email protected]> > >> 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: [email protected] > >>>> To: [email protected] > >>>> Subject: Re: [c-nsp] Multicast Issue > >>>> Date: Wed, 30 May 2012 08:18:57 +0200 > >>>> CC: [email protected] > >>>> > >>>> 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 [email protected] > >>> https://puck.nether.net/mailman/listinfo/cisco-nsp > >>> archive at http://puck.nether.net/pipermail/cisco-nsp/ > > > > _______________________________________________ > > cisco-nsp mailing list [email protected] > > https://puck.nether.net/mailman/listinfo/cisco-nsp > > archive at http://puck.nether.net/pipermail/cisco-nsp/ > > > > > > > > _______________________________________________ > > cisco-nsp mailing list [email protected] > > https://puck.nether.net/mailman/listinfo/cisco-nsp > > archive at http://puck.nether.net/pipermail/cisco-nsp/ > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
