On Fri, Mar 03, 2023 at 09:37:10AM -0500, Alvin Starr via talk wrote:
> Feel free to correct me but I believe that all the "optical" and co-axial
> cable based services are shared(GPON).

What internet isn't these days?  My current 25Mbit DSL link goes to a
box a few hundred meters down the street and then to a shared fiber link
back to Bell.  They are all "up to" some speed.

> So you could be sharing your 2.5Gb with up to 100 other people and if
> everybody decides to download a few hundred GB of video files at the same
> time you could be seeing speeds like 25Mb.
> So last mile bit rate is almost always much greater than the bandwidth that
> is available from the end node(home) to the core(151 front).
> I have seen 6Mbit DSL reduced to hundreds of bps by chronic back-haul
> congestion.
> 
> So a fiber/cable modems buffering with a 1Gb output may be enough to cover
> the practical bandwidth available on a reasonably loaded network.

My understanding is that the shared part is at least 10Gbit for each
segment.  Not sure how many houses would share one segment.

I still expect a fiber connection to be faster than my 25Mbit DSL
connection.  And it's not like people are constantly downloading, so
I would think for the most part you ought to get decent speed in most
cases, although of course what speed the server at the other and can
provide you is a different story.  It's only as fast as the slowest link.

-- 
Len Sorensen
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