[TUHS] V6 networking & alarm syscall

[Madeline Autumn-Rose]

Where did you find the BBN TCP/IP stack?

Sent from my iPhone

On Jan 12, 2019, at 10:16, Eric Allman <tuhs at eric.allman.name> wrote:

>> Eric, please fill me in.
> 
> I have to admit that my memories are a bit fuzzy, but I'll try to fill
> in what I can.
> 
>> On 2019-01-12 9:20 AM, Clem Cole wrote:
>> ...
>> FWIW: Since I had been working networking at both CMU and Tek before I
>> came to UCB, one of the first things I did when I arrived in fall '81
>> was to install the Gurwitz BBN IP/TCP stack on 4.1 so we could run
>> Ethernet between the 3 CAD machines in Cory Hall to replace the use of
>> BerkNet over 9600 baud serial links (IIRC Eric Cooper, was involved with
>> that hack also).   When I had arrived, few machines at UCB were on LANS
>> and the need for ARPAnet style networking >>besides<< email was still
>> limited.  The way people connected to systems was their terminal was to
>> connect over serial links and we had a giant 'plugboard' that allowed
>> you patch your terminal into one of the systems [I wonder if there are
>> pictures of these somewhere in the UCB archives - it was quite something].
> 
> That it was.  When the INGRES group got our ARPAnet connection (VDH to
> LBL, as you mentioned) it was the only long-haul connection to campus
> that I know of.  Eric Schmidt had done BerkNET, but that was local mail
> and file copy only, and BerkNET mail didn't connect to ARPAnet mail, so
> there were "plugboard wars" over who got one of the two RS232
> connections we had available for outside users (this was out of a grand
> total of 16 connections on a DH-11, each at about $1000/port, iirc).  I
> was nominally responsible for the ARPAnet connection, so I had senior
> faculty on my case about how they all "needed" dedicated connections to
> their office (but of course they didn't want to pay for them).  This was
> the original inspiration for delivermail, which later became sendmail.
> 
>> We had three 780s in the CAD group in Cory and really did not like the
>> plugboard scheme. From my previous experience, I wanted something like
>> telnet or supdup, like we had been messing with at CMU and Tek.  Hence
>> my push to put the BBN code on the CAD systems and use an ethernet.   
>> Eric, please fill me in.   You must have been running the BBN code then
>> also, since Ing70 and then IngVax were the ArpaNet connection (via
>> a VHDH to the LBL IMP - UCB did not yet have its own IMP).   But I know
>> the CAD systems 4.1 networking stuff was done by me.
> 
> As I recall IngVax never had any ARPAnet service, and Ing70 was running
> the NCP code from San Diego, which could well have originated at BB&N,
> but I can't confirm that from memory.  Conversely, Ing70 was never on
> any "modern" networking technology such as 3Mbit ethernet (I don't think
> there were even NICs at that time).
> 
>> Its a little fuzzy now, but memory is that Bob Kriddle had run a Xerox 3
>> Meg cable in Cory, from my machine room over to the Ingres machine room
>> also; but I've forgotten the details.  BerkNet (i.e. serial links)
>> allowed email to flow on campus, but I'm thinking we were trying to make
>> that both more efficient and allow telnet/ftp [which might not have
>> happened until after the C/30 IMP was installed in Evan later).   [Since
>> all ARPAnet email followed through IngVax, Eric's history of dealing
>> with the header file format of the month in the old delivermail program
>> would force his writing sendmail - said history has been repeated here
>> and elsewhere previously].
> 
> Yes, modulo it being Ing70, not IngVax.
> 
>> But this thread got me thinking a little bit.   I've forgotten actual
>> LAN topology we had a UCB now. I know from the CAD hosts, we could talk
>> to the other hosts in our lab in Cory for sure, I want to say we could
>> talk to a few other hosts in Evans and Cory; as I know Sam would give me
>> code usually via some type of network connection, although sneaker-net
>> with 9-track tapes used a great deal too.   I want to say the connection
>> was over Kriddle's 3M Xerox cable (Eric do you remember what you had in
>> IngVax in those days).  I know we also a had real 10Meg cable in floor
>> our lab in Cory, plus at least one Xerox board on one of the systems,
>> another had a DEC interface in it, and Interlan boards in at least two
>> others another.   We must have even had a 3Com board in the third
>> system; as I remember hacking both the Interlan and 3Com drivers (I had
>> written a 3Com driver at Tek previous for VMS.  The Interlan board was
>> new, as was the DEC board; but I've forgotten what we got when).     The
>> original CAD 780 ('Coke')  must have had multiple interfaces in it, but
>> I really don't remember.
> 
> You would think I would remember more of the network situation around
> the INGRES project given that we had someone working on distributed
> databases (Ken Birman, now at Cornell I think, did something called
> COCANET).  However, I have no recollection at all about what the
> connection actually was.  It might be possible to pull some of Ken's old
> papers (late 70s/early 80s) and get more information there.
> 
> eric