7 Nov
2022
7 Nov
'22
7:10 p.m.
Mark,
If it helps I can bring up the bridge…
-Steve Davidson
SF:iP1
On Nov 7, 2022, at 12:42, Mark Wickens
<mark(a)wickensonline.co.uk> wrote:
Thanks for all the help.
I've installed pydecnet onto my HP microserver. It is running Ubuntu linux:
Linux hpm 5.4.0-131-generic #147-Ubuntu SMP Fri Oct 14 17:07:22 UTC 2022 x86_64 x86_64
x86_64 GNU/Linux
Also running on this machine is a simh instance called SIMVAX which is my 4.1 area
router. It is configured as DECnet Phase IV.
At some point in the past I was connected to Steve Davidsons bridge.declab.net:4711 via
the bridge.c software, however I suspect that hasn't been working for some time.
If I could get some help configuring pydecnet to work in a way which means I can then
take the HP Microserver with me and create a wifi to lan bridge, probably using a separate
PC, that would be great. Sorry, I've very rusty with all this and have been having to
rely on finger memory for some of the VMS commands it's been that long!
Regards, Mark.
On Mon, 7 Nov 2022 at 14:25, Paul Koning
<paulkoning(a)comcast.net> wrote:
So I'm puzzled. Why would IS-IS not work? If multicast semantics are implemented
correctly (i.e., the multicast messages are delivered to all stations other than the
sender), it should all just work. Multicast is no different from broadcast, and of course
broadcast works.
Is this just a case of some badly designed access points that don't understand how
LANs work? FWIW, I have once or twice turned on PyDECnet on a Wifi link. Of course that
doesn't work because of the HIORD stuff, but the multicast definitely do get
delivered, I get adjacency up and all that.
paul
--
M0NOM/P ADIF Processor
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To unsubscribe send an email to hecnet-leave(a)lists.dfupdate.se On Nov 6, 2022, at 6:24 PM, Johnny Billquist
<bqt(a)softjar.se> wrote:
I think all APs do multicasts over WiFi as unicasts to every client. WiFi could, I guess,
in theory do true multicasting, but since it's all acknowledged at the radio level,
and encryption and what not, WiFi do it all by unicasts. But that is basically hidden
away, and usually works fine.
Much worse is that with DECnet you want to change the MAC address, which WiFi gets really
messed up with, and it usually do not work well at all. And that especially gets messed up
when in combination with the multicasting.
I didn't know that IS-IS had problems over WiFi. I learned something new today. Cool.
Thanks.
Johnny
On 2022-11-07 00:17, Peter Lothberg wrote:
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To unsubscribe send an email to hecnet-leave(a)lists.dfupdate.se If you are to do native DECnet over WIFI, note
that Ethernet multicast
is a problem for WIFI and some AP's turns them in to unicasts to every client..
(This is the same problem as running IS-IS in your home network...)
-P
----- Original Message -----
> From: "Paul Koning" <paulkoning(a)comcast.net>
> To: "The Hobbyist DECnet mailing list" <hecnet(a)lists.dfupdate.se>
> Sent: Sunday, November 6, 2022 4:35:25 PM
> Subject: [HECnet] Re: Ad-hoc connection to hecnet?
> Indeed, for Phase IV and IV-plus. Fixed (obscurely) in IV-prime, and in Phase
> V.
>
> Some day I should implement IV-prime in PyDECnet. It's not all that hard.
>
> If you just want to use WiFi to run IP based tunnel type protocols, there is no
> issue. And if the router you're going to doesn't restrict the remote IP
> address for its traffic (in PyDECnet, you can only do that for TCP based
> protocols: Multinet and DDCMP) then you should be able to do "ad-hoc"
> connections just fine.
>
> paul
>
>
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--
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: bqt(a)softjar.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
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