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Old 04-29-2015, 06:10 AM
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Originally Posted by Ultra_Nexus View Post
With a cable to your house you have a nice single collision domain for just you.
... but there's the contention ration to errr... contend with of course.

IIRC BT is at least 50:1.
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Old 04-29-2015, 08:28 AM
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Originally Posted by Polemicist View Post
IIRC BT is at least 50:1.
That 50:1 thing goes back to the original ADSL service, but I think it was only ever a very pessimistic minimum guarantee. Back then it was 512K (or 1 or 2Mb for business) at 50:1, but if anyone really was getting a 50th of their speed it wouldn't have worked at all. And if you go to one of the speed testers you certainly don't get a 50th of your promised bandwidth.
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Old 04-29-2015, 08:58 AM
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Originally Posted by Nick Graves View Post
Originally Posted by not4s4l3' timestamp='1429625485' post='23585781
[quote name='Polemicist' timestamp='1429609112' post='23585594']
I wonder how heavy the USB stick would be with all the internet on it...
Not very - Richard Ayoade managed to lift it.

But maybe that was just a stage prop.
[/quote]

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Old 04-30-2015, 10:22 AM
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Originally Posted by Polemicist View Post
Originally Posted by Ultra_Nexus' timestamp='1430309183' post='23595261
With a cable to your house you have a nice single collision domain for just you.
... but there's the contention ration to errr... contend with of course.

IIRC BT is at least 50:1.
That affects bandwidth and not collision domains.
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Old 04-30-2015, 12:23 PM
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Let's give pole something to Google to help him understand the distinction

csma/cd

That's a starter
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Old 04-30-2015, 12:38 PM
  #26  
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Originally Posted by Dembo View Post
Originally Posted by Polemicist' timestamp='1430316642' post='23595408
IIRC BT is at least 50:1.
That 50:1 thing goes back to the original ADSL service, but I think it was only ever a very pessimistic minimum guarantee. Back then it was 512K (or 1 or 2Mb for business) at 50:1, but if anyone really was getting a 50th of their speed it wouldn't have worked at all. And if you go to one of the speed testers you certainly don't get a 50th of your promised bandwidth.
It appears BT no longer employs fixed contention ratios for consumer or business; it is managed according to network activity.

So presumably that means one may be on a lower or a higher ratio depending how BT manage the network.
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Old 04-30-2015, 01:04 PM
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Originally Posted by cheshire_carper View Post
Let's give pole something to Google to help him understand the distinction

csma/cd

That's a starter
Interesting...

Presumably if there's 'lots' happening on the LAN and data is being managed to avoid 'transmission collision' on it, then the end result for users on the LAN, who are connected to the WAN, is the same as a bandwidth limitation; one can't get the whole bunch (as distinct from the packets) of ones and zeros up or down the pipe quickly?
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