[LINK] NBN to cost 24 times South Korea's faster network, says research body

Kim Holburn kim at holburn.net
Thu Feb 10 20:01:38 AEDT 2011

On 2011/Feb/10, at 7:02 PM, Paul Brooks wrote:

> On 10/02/2011 5:13 PM, Kim Holburn wrote:
>> If there's no bottleneck then QoS doesn't really matter.  At least QoS doesn't matter after it leaves your home network.  QoS only matters if there is contention.  If you're not filling the pipe there is no contention.
> In reality there are always bottlenecks and contention. ISP trunks, AGVC paths,
> consumer's access links, interstate and international links all congest at times. Even
> if not normally, then certainly if one or more longhaul paths fail and traffic has to
> suddenly squeeze through a smaller number of parallel paths. QoS can keep applications
> that care about low jitter and packet loss experiencing the performance they need, as
> if there weren't congestion.

Only as long as the QoS is honoured in the same way all along the path surely.

> At an aggregation point, even if you aren't filling your pipe, you have no way of
> knowing what other people are doing with their pipes that meet and intermingle with yours.

Kim Holburn
IT Network & Security Consultant
T: +61 2 61402408  M: +61 404072753
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