[Info-vax] booting vaxstation off alpha

Johnny Billquist bqt at softjar.se
Mon Feb 11 19:31:47 EST 2013


On 2013-02-11 13:44, Stephen Hoffman wrote:
> On 2013-02-11 07:54:11 +0000, Hans Vlems said:
>
>> DECnet over DSSI works fine, provided you get the incantations right.
>> All I tried was CTERM and FAL and both worked as expected (reliable
>> albeit slow).
>> Another example of an undocumented, unsupported feature that works
>> alright.
>
> Not that there is even a remote chance of seeing DSSI gear around, nor
> any likelihood of IP over FC nor connections, but...
>
> If you ran any tests[1] with that, how well does that "albeit slow"
> connection perform as compared with slow Ethernet?  CI wasn't known for
> its network performance, as compared with DECnet over even then-current
> 10 Mb Ethernet, and usual recommendations back then had CI at higher
> cost as a backup connection.  I can't see DSSI being much better in that
> regard.

That sounds weird. Do you know why?
I mean, CI was after all two redundant full duplex 70 Mbit/s channels, 
compared to the half-duplex 10Mbit/s ethernet. Not to mention the fact 
that the MTU of CI is much larger.

	Johnny

-- 
Johnny Billquist                  || "I'm on a bus
                                   ||  on a psychedelic trip
email: bqt at softjar.se             ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol



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