[ih] Installed base momentum (was Re: Design choices in SMTP)

[John Day]

Yep, thanks.

I use to have a slide that had (drawn to scale), 576 byte IP packets over 53 byte ATM cells, over 1500 byte SONET frames with caption, “Why?"

> On Feb 13, 2023, at 16:40, Olivier MJ Crépin-Leblond via Internet-history <internet-history at elists.isoc.org> wrote:
> 
> 
> 
> On 10/02/2023 17:56, John Day via Internet-history wrote:
>> ATM was a bad idea the day it was proposed.  It was unbelievable how many people were taken in by it.
> 
> ATM saw glory in PPPoA in ADSL - https://en.wikipedia.org/wiki/Point-to-Point_Protocol_over_ATM
> 
> As for why TCP/IP won over OSI, my take is that at the time OSI stacks really worked for large mainframe computers. The advent of PCs & desktop machines that could run early TCP/IP stacks killed the OSI stack. Credit goes in particular to:
> - KA9Q - https://en.wikipedia.org/wiki/KA9Q (incidentally why is Phil Karn not in the Internet Hall of Fame?)
> - Microsoft implementing TCP/IP in Win95
> - Novell NetWare TCP/IP support in the early 90s & its NE2000 card (& compatibles)
> 
> Mainframes lost the game and along did OSI.
> Best,
> 
> Olivier
> 
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