[ih] inter IMP hackery [was Recently restored and a small ARPANET was run using simulated IMP hardware, ]

[vinton cerf]

I am pretty sure we did host/host or at least host/end-IMP (eg. send to
fake host) tests.
I generated traffic from the Sigma-7 and measured transfer rates to the
destination (fake host or possibly real-host).

We used statistical traffic generators in the Sigma-7 and IIRC there were
fake hosts that could generate traffic in accordance to statistical
parameters. We were able to collect host level and IMP level statistics
from the ARPANET. When Bob Kahn and Dave Walden came to visit UCLA in Jan
1970, I programmed a lot of different traffic patterns to test bob kahn's
hypotheses that there were certain weaknesses in the routing and flow
control algorithms of the IMPs.

vint




On Mon, Sep 7, 2020 at 2:36 PM Steve Crocker <steve at shinkuro.com> wrote:

> I don't think the NMC measured anything at the host level, but I could be
> wrong.  Vint and Len copied explicitly.
>
> Steve
>
>
> On Mon, Sep 7, 2020 at 2:30 PM Jack Haverty via Internet-history <
> internet-history at elists.isoc.org> wrote:
>
>> On 9/7/20 11:15 AM, Steve Crocker via Internet-history wrote:
>> > It would be interesting to know the
>> > transfer rate between MTIPs.
>> This is the kind of thing that I'd expect the ARPANET NMC (Network
>> Measurement Center at UCLA, as opposed to NOC - Network Operations
>> Center at BBN) might have been measuring.  I don't remember ever seeing
>> any results or raw data from Measurements, and don't know much about
>> that part of the History.   Were results published somewhere and did
>> such reports survive?
>> /Jack
>>
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>>
>