[afnog] monitoring my ISP

[Sunday Adekunle Folayan]

Brian Candler wrote:
> On Thu, Aug 17, 2006 at 12:24:08PM +0100, Herbert Maosa wrote:
>
>> Sunday Adekunle Folayan wrote:
>>
>>> Please note that some ISPs in Africa do
>>> traffic shaping deliberately to differentiate service levels, especially
>>> for customers who do not want to pay much.
>>>
>> Traffic Policing, you mean  ?
>>
>
> That's one option, but there are others, such as:
>
> - Traffic Policing: dropping packets which exceed contracted rate
> - Traffic Shaping: queueing packets, emptying the queue at contract speed
>   (eventually will result in packet loss if the queue overflows, but as
>   long as the queue is bigger than a few TCP windows, it will normally
>   just make the service appear like a slower leased line)
> - Contention: if 100 customers each with a 512K service share a 1M uplink,
>   and simply fight it out between them, this is a 50:1 contention ratio
> - "Sin Bin": customers who exceed a particular usage quota are lumped
>   together in a small pipe, which they fight for with other sin bin users
>
I am still laughing, just thinking of the Sin Bin. We still do not know,
if we are all trying to help a sinner :-)

Sunday.


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