[HECnet] Decnet on RSX-11
Johnny Billquist
bqt at softjar.se
Sat Jun 8 18:13:03 PDT 2019
Since DECnet decides what MAC address you are supposed to have, they
*have* to have the same MAC address in simh, which is why I was pointing
out that if you actually had them on the same ethernet segment, you are
messed up. :-)
They have to have the same address because it is derived from the DECnet
address, and your machine only ever have one DECnet address. DECnet do
not have an address per interface, like IP do.
Johnny
On 2019-06-09 03:08, Kurt Hamm wrote:
> OK. I did have two ethernet adapters configured for each server. I
> disabled the second one. But, worse, in the simh ini file, both servers
> had the same MAC addresses associated with their ethernet adapters. I
> am not sure how this ever worked.
>
> I am still checking things and will start working on that PDP-11
> default thing shortly.
>
> Kurt
>
>
>
> On Sat, Jun 8, 2019 at 8:47 PM Johnny Billquist <bqt at softjar.se
> <mailto:bqt at softjar.se>> wrote:
>
> Oh, and by the way... Do you have two physical, separate ethernets?
> Because otherwise you might be in even more trouble, as you have two
> ethernet interfaces defined on MOE, and they both see LARRY. If you
> actually have two ethernet networks between the two machines, then
> everything is fine. Otherwise you are actually very messed up.
>
> Johnny
>
> On 2019-06-09 02:45, Johnny Billquist wrote:
> > Maybe not much comfort, but MOE isn't using the multinet link to
> LARRY
> > either, but is also talking over ethernet.
> >
> > Johnny
> >
> > On 2019-06-09 02:36, Kurt Hamm wrote:
> >> Ugh. Back to work.
> >>
> >> I did see some errors....
> >>
> >> Kurt
> >>
> >> On Sat, Jun 8, 2019, 8:35 PM Johnny Billquist <bqt at softjar.se
> <mailto:bqt at softjar.se>
> >> <mailto:bqt at softjar.se <mailto:bqt at softjar.se>>> wrote:
> >>
> >> Well, just taking a peek at CURLY, I can also tell that you
> have not
> >> managed to get the multinet links up and running, but are
> >> communicating
> >> with DECnet over ethernet. :-)
> >>
> >> Johnny
> >>
> >> On 2019-06-09 02:20, Kurt Hamm wrote:
> >> > That's it! Everything works great. I have the node list
> and can
> >> access
> >> > reachable nodes from the PDP-11.
> >> >
> >> > This is just really wonderful.
> >> >
> >> > As a thank you, I will leave the mailing list alone for a
> >> while. ha!
> >> >
> >> > Kurt
> >> >
> >> > On Sat, Jun 8, 2019 at 6:42 PM Johnny Billquist
> <bqt at softjar.se <mailto:bqt at softjar.se>
> >> <mailto:bqt at softjar.se <mailto:bqt at softjar.se>>
> >> > <mailto:bqt at softjar.se <mailto:bqt at softjar.se>
> <mailto:bqt at softjar.se <mailto:bqt at softjar.se>>>> wrote:
> >> >
> >> > Ok, a quick rundown on some of the more esoteric details
> >> about lines
> >> > and
> >> > circuits might be useful here.
> >> >
> >> > First of all, Kurt, you might want to redo the NETGEN
> and not
> >> set the
> >> > system up for DECnet routing. It takes a lot of
> resources,
> >> and if you
> >> > don't really want it, you are much better off with a
> system
> >> not even
> >> > generated for it.
> >> >
> >> > The question about remote nodes are just for an initial
> >> population of
> >> > your local nodename database. All you need there is
> really to
> >> define
> >> > MIM
> >> > (1.13). You can then copy the whole nodename database
> from
> >> MIM over to
> >> > your machine that way instead. Let me know if you
> want some
> >> details on
> >> > that step.
> >> >
> >> >
> >> > On 2019-06-08 22:25, Mark Matlock wrote:
> >> > > Kurt,
> >> > > If you want two circuits like UNA-0 and IP-0-0 I
> >> think you
> >> > have to
> >> > > be a routing node (but not an area router).
> >> >
> >> > Not really, but maybe. If you define multiple
> circuits, and
> >> are an
> >> > end-node, only one circuit will be active. But others can
> >> exist, and
> >> > the
> >> > system will fall back to some other circuit if the
> active one
> >> goes
> >> > down.
> >> > So it can be used as a back connection.
> >> >
> >> > However, even as an end-node, you can have several
> *lines*
> >> on and
> >> > active
> >> > at the same time. And this is a trick to use if you want
> >> > DECnet-over-IP,
> >> > but want to be an endnode. You need ethernet for
> TCP/IP to
> >> work, but
> >> > you
> >> > do not want DECnet to use the ethernet circuit.
> >> >
> >> > But you configure one IP line as well, and that is
> the one
> >> DECnet will
> >> > be using. Meanwhile, TCP/IP is using the ethernet line.
> >> >
> >> > It might sound a little confusing, but think about it
> for a
> >> second, and
> >> > I hope it becomes clear. Otherwise, just ask, and
> I'll try to
> >> > explain it
> >> > better.
> >> >
> >> > > Also, you should define all the nodes you want to
> talk
> >> to with
> >> > NCP in
> >> > > one of the startup files or do it with CFE but I
> prefer
> >> startup
> >> > so it’s
> >> > > simple to change.
> >> >
> >> > I would actually say that you wouldn't. Of course,
> there is
> >> nothing
> >> > wrong in doing this, but if you want the full HECnet
> nodename
> >> database,
> >> > it contains 700 nodes. That will take a while to type in.
> >> >
> >> > However, you can copy the nodename database from another
> >> DECnet node,
> >> > and then use this.
> >> >
> >> > But you need at least the nodename of someone where
> you will
> >> be copying
> >> > from to start with, which is why I suggested adding
> MIM at
> >> the start.
> >> >
> >> > After that, there is [5,54]NNC which is the nodename
> >> collector task.
> >> > Run
> >> > it, collect names from another node, and build a new
> database
> >> with
> >> > this.
> >> > Then stop and restart the node name server, and you
> have all
> >> the nodes
> >> > defined.
> >> >
> >> > (The node name server is managed by the command SCP.
> >> > So, SCP STOP followed by SCP START will do it.)
> >> >
> >> > Johnny
> >> >
> >> > --
> >> > Johnny Billquist || "I'm on a bus
> >> > || on a
> psychedelic trip
> >> > email: bqt at softjar.se <mailto:bqt at softjar.se>
> <mailto:bqt at softjar.se <mailto:bqt at softjar.se>>
> >> <mailto:bqt at softjar.se <mailto:bqt at softjar.se>
> <mailto:bqt at softjar.se <mailto:bqt at softjar.se>>> ||
> >> > Reading murder books
> >> > pdp is alive! || tryin' to stay
> hip" -
> >> B. Idol
> >> >
> >>
> >> -- Johnny Billquist || "I'm on a bus
> >> || on a psychedelic trip
> >> email: bqt at softjar.se <mailto:bqt at softjar.se>
> <mailto:bqt at softjar.se <mailto:bqt at softjar.se>> ||
> >> Reading murder books
> >> pdp is alive! || tryin' to stay hip" -
> B. Idol
> >>
> >
>
> --
> Johnny Billquist || "I'm on a bus
> || on a psychedelic trip
> email: bqt at softjar.se <mailto:bqt at softjar.se> ||
> Reading murder books
> pdp is alive! || tryin' to stay hip" - B. Idol
>
--
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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