[ih] More topology

[Dave Crocker]

On 8/29/2021 12:54 PM, Jack Haverty via Internet-history wrote:
> The prominent exception to the "fuzzy peach" was transatlantic traffic, 
> which had to cross both the ARPANET and SATNET.   The gateway 
> interconnecting those two had to discard IP datagrams when they came in 
> faster than they could go out.   TCP would have to notice, retransmit, 
> and reorder things at the destination.


True gatewaying -- exchanges between systems with different semantics -- 
seems to be quite a good way of testing assumptions and overall robustsness.

For email, getting a message from one type of mail service to a 
recipient in another is not the interesting test.  Whether the recipient 
can normally and successfully use their Reply command, back to the 
original author is.

d/

-- 
Dave Crocker
Brandenburg InternetWorking
bbiw.net