[c-nsp] Multicast Issue

[Tony]

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_mssk at hotmail.com>
>To: matt at mcadory.info 
>Cc: cisco-nsp at 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: matt at mcadory.info
>> To: eng_mssk at hotmail.com
>> CC: cisco-nsp at 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_mssk at 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.tinka at seacom.mu
>> >> To: eng_mssk at hotmail.com
>> >> Subject: Re: [c-nsp] Multicast Issue
>> >> Date: Wed, 30 May 2012 08:18:57 +0200
>> >> CC: cisco-nsp at 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.
>> >
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