On 2023-03-03 11:51, Alvin Starr via talk wrote:
The upside of ADSL is that it is wire speed from the customer point to the node equipment is what you can get before back-haul.
With cable the all the customers on the segment are sharing the same bandwidth. So if your the first one on the cable you have the full speed to yourself but if your number 100 then you and the 99 other people are sharing that speed.
If you're on Fibe, you only have your own wire out to the node in the neighbourhood. From there, it's shared. Not much different from cable.
I picked 151 front as a common point that people would know as a backbone point. There are a hand full of IX points in Toronto now but 151 is still the biggest. There is also a reasonable likelihood that some of your traffic will still transit 151 Front.
Rogers is certainly there and many other ISPs. I believe Bell peers in the U.S..
When UUNET moved into 151 front the reason I was given was because of the adjacent CO. That was also LONG before the building became a data center, and lots of big Bell COs are gone now or nothing more than a small brick building, so that CO may have gone also.
I was a computer tech in a data centre there in the late 70s and 80s, long before the Internet and VoIP tech that allowed the shrinking of the CO. Last time I was there, a few years ago, doing work for Freedom, the "CO" was a small fraction of what it was, when I worked in it. I was in planning there, 1989-1995 and saw a lot of change. I remember when UUNET was there. Some of my work was for Compuserve and the Microsoft network, along with various resellers and other carriers. I'm the guy who planned the installation of a lot of systems there, as well as downtown Toronto and also up on the CN Tower. Here's a bit of trivia from back then. I had over 6000 bays (racks or cabinets, most 8' tall) of equipment to keep track of. The -48V plant ran about 7,000 amps to power all that equipment. At that time, the Unitel equipment was on the 4th & 5th floors, with the other companies scattered among the other floors. I worked with all of them in my planning.