Ethernet names...

[Grant Taylor]

On 10/04/2018 11:26 AM, Paul Koning via cctalk wrote:
> That's sort of accurate.  A quick look shows some key differences: V2 adds 
> the "collision presence test" -- verifying the collision detect signal 
> is working.  There is also the "jabber timer" -- a watchdog timeout that 
> stops excessively long frames.  And V2 introduces the loopback protocol 
> (protocol type 90-00).

That mostly sounds like the frame formats are the same on the wire and 
that the differences are in the protocols that use said frame.

> The collision presence test is somewhat of an interoperability issue: 
> if you attach a V1 transceiver to a V2 NIC, the NIC would complain on 
> every transmit that it didn't get the collision test signal.

That makes me wonder about the "heartbeat" switch that I see on older 
AUI transceivers.



-- 
Grant. . . .
unix || die