[ih] how big was the host file

[John Day]

Yes, 4 hosts per IMP was included in the 64.  

The IMP protocols were modified once or twice later in the 70s to allow to increase the number of hosts. But I didn’t think that happened as early as 1973.

I didn’t realize TCP/IP was being rolled out in 1973. Interesting.  

Take care,
John

> On Feb 6, 2020, at 07:15, vinton cerf <vgcerf at gmail.com> wrote:
> 
> there was provision for up to 4 hosts per IMP and we even had a "port extender" for IP addresses as TCP/IP rolled out. So I don't think 64 was the limit.
> 
> v
> 
> 
> On Thu, Feb 6, 2020 at 7:10 AM John Day via Internet-history <internet-history at elists.isoc.org <mailto:internet-history at elists.isoc.org>> wrote:
> Why was it so large?
> 
> There certainly weren’t 134 hosts on the ’Net in 1973.  Wasn’t the maximum number then still 64?
> 
> John
> 
> > On Feb 6, 2020, at 03:28, Lars Brinkhoff via Internet-history <internet-history at elists.isoc.org <mailto:internet-history at elists.isoc.org>> wrote:
> > 
> > Jacques Latour wrote:
> >> How big was the host file before the DNS came in action? 200K entries?
> > 
> > I'd like to go in the other direction.  What are the smallest recorded
> > hosts files?
> > 
> > An MIT hosts file from 1973 was 134 lines.
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