[Simh] LAVC

[Johnny Billquist]

On 2017-03-11 17:18, Mark Pizzolato wrote:
> On Saturday, March 11, 2017 at 5:49 AM, Tim Stark wrote:
>> Thanks for many replies. I learned a lot about VAX clustering. I will use
>> multicast Ethernet for clustering.  I have more one question. Is that possible to
>> emulate HSC controllers with LAVC access?
>
> When Matt Burke and I were discussing the CI concept, we picked IP
> Multicast as transport for the very specific reason that all modern host
> systems will have natural user mode programming access to implement
> this functionality.  Attempting to create your own Ethernet multicast
> protocol (non-IP based) will have portability complexities on different
> platforms due to the fact different platforms have varying support (and
> potentially require privilege) to present and/or receive raw Ethernet
> frames to/from a LAN.

I don't know for sure, but I assume that Tim just meant that he will let 
LAVC do as LAVC does, without him doing anything.
And LAVC itself might be using ethernet multicasting.
This is no more an issue than DECnet communication, which also requires 
access to the raw ethernet.

	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