Emulating ADSL bandwidth shaping

isabel dias isabeldias1 at yahoo.com
Tue May 4 13:41:48 UTC 2010

same as in the HFC and QAM modulation values and so on and so forth .....
services that are requiring a connection-oriented service such as a gaming clan/cloud are highly affected when working in latency and jitter network based environments such as the ethernet based ones and SMDS .......

----- Original Message ----
From: Chris Boyd <cboyd at gizmopartners.com>
To: NANOG <nanog at nanog.org>
Sent: Tue, May 4, 2010 2:19:39 PM
Subject: Re: Emulating ADSL bandwidth shaping

On May 4, 2010, at 7:27 AM, Marshall Eubanks wrote:

> I am not sure what the point is in mixing in speed of light latency. If your "typical sites" are, say,
> Indian cricket blogs, you will typically have a high latency from the US. What does that tell
> you about your DSL or Cable system, except that it is somewhat removed from India ?

Most of the ADSL installations I've seen in SBC 13 state area had interleaving turned on, which significantly increases latency.  I suspect that's why many cable MSOs in the same territory have "cable is better for gaming" marketing campaigns running all the time.

So the latency you see on an ADSL line is dependent on how the carrier set up the DSLAM.



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