[AusNOG] News: Telstra to clamp down on peer-to-peer

[Craig Askings]

My statement still stands for CODEL and other algorithms that drop packets once the buffer exceeds a latency threshold. They still have to drop packets, it's just a different metric for when you start to drop the packets. You still need QoS of some form to choose the loser.

Craig. 

On 07/02/2013, at 1:07 PM, Nicholas Meredith <nicholas at udhaonline.net> wrote:

> > Ok so the buffers are now full and a voice packet arrives.
> Correct buffer management means the buffers can't get full.  Look at CODEL as an example.  I realise I should have mentioned earlier this is obviously not possible today, but it will be, and it's the correct solution to the problem.
> 
> Kind Regards,
> 
> 
> Nicholas Meredith
> nicholas at udhaonline.net
> Ph: 0430 042 913
> 
> 
> On Thu, Feb 7, 2013 at 10:21 AM, Craig Askings <craig at askings.com.au> wrote:
> Ok so the buffers are now full and a voice packet arrives. Do you want the router / switch to drop that voice packet or choose another packet to take one for the team? That is what QoS is for, even with small buffers you still need QoS to pick the loser.
> 
> Craig.
> 
> On 07/02/2013, at 10:11 AM, Nicholas Meredith <nicholas at udhaonline.net> wrote:
> 
>> I don't follow, congestion won't cause latency if buffers are controlled correctly. How is QoS better in this case?
>> 
>> On 07/02/2013 9:27 AM, "Paul Brooks" <pbrooks-ausnog at layer10.com.au> wrote:
>> On 7/02/2013 8:10 AM, Nicholas Meredith wrote:
>> >
>> > If bufferbloat gets resolved it will render QoS utterly redundant.
>> >
>> perhaps...until a link went down and the streams re-routed to another path causing
>> congestion, or more traffic thrown on the original path also causing congestion.
>> Even if bufferbloat might  'get resolved', which it won't.
>> 
>> P.
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