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Originally Posted by DaggaDagga
Ethernet is switched unless you're using antique hubs, which nobody does any more - for very good reason.
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I was using it purely as an example
Still a crunch point at the trunk port on the switch though.
I see what you're trying to say however BT have backhaul issues same as ntl and these aren't solved immediately. Due to the nature of the BT kit it can require kit replacement to resolve issues. Some exchanges once they fill their existing capacity will require quite extensive work to upgrade.
Once BT's 21CN project is completed upgrading backhaul should be trivial, however ntl have also been upgrading and some of these upgrades have made future upgrading easier.
As I said even fibre to the home is a shared passively optically split media.