At 3:36 PM 11/4/95, David R Conrad wrote:
>P.S. I believe the NSFNet routers were general purpose Unix machines
>(IBM RS6000s) with high speed serial interfaces.
Correct. Each serial interface has its own forwarder and sends packets
directly across the uChannel to the egress interface. The CPU doesn't see
the packets. There's no publically documented interface to the serial
interface, and certainly no /dev/nit. As a result, it would be no easier
to sniff packets on an NSFNET router than on your favorite router vendor's
(non-workstation based) router.