[98961] in North American Network Operators' Group
DECNet Good Old Days (spun from ...network boundaries...)
daemon@ATHENA.MIT.EDU (James R. Cutler)
Sun Aug 26 19:22:46 2007
Date: Sun, 26 Aug 2007 19:19:41 -0400
To: nanog@merit.edu
From: "James R. Cutler" <james.cutler@consultant.com>
In-Reply-To: <46D1428D.3060704@peter-dambier.de>
Errors-To: owner-nanog@merit.edu
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Just for the record about DECNet:
At the peak of population, I managed naming and addressing
assignments for a DECNet network with just over 8000 nodes. Local
routers were mostly Digital Equipment, some wide area used
Cisco. After a major split in the network, the remaining 3500 or so
Phase IV nodes coexisted happily with AppleTalk, IPX, and IP hosts on
a Cisco backbone. My multiprotocol workstation was an Apple
Macintosh IIci. Of course, by now the routing network is all IP based
with several tens of thousands of routes in the default-free internal network.
Cutler
When I switch, it is from Windows to Mac OS X
At 8/26/2007 11:06 AM +0200, Peter Dambier wrote:
John Osmon wrote:
>I<snip>
>Years ago, I worked on a academic network where we had a mix
>of IPX, DECnet, Appletalk, and IP(v4). Not all of the routers
>actually routed each protocol -- DECnet wasn't routable, and I recall
>some routers that routed IPX, while bridging IP...
<Snip>
I remember old DECNET, DDCMP, IPX and NetBios days.
I used to have a couple of 19.2 kilobaud async lines, 2 arcnets and
an ethernet (thinwire technology but on RG13U cables, almost yellow wire
and UHF connectors - PL-259 like CB-radio).
DDCMP could route, IPX could and NetBios was riding on either IPX or
DDCMP so it did not matter.
<snip/>
In its best times the network was seeing some 1000 hosts. Everything
was running 10 MBit ethernet. there were 9 segments and no routers.
I have seen you could put some 30 NetBios PCs into a single segment
or more than 200 DECNET hosts if they were connected via switches and
thinwire transceivers.
Today without thinwire or yellow cable and with switches that can do
1 Gbit between switches and 100 Mbit to devices you should be able to
keep some 1000 hosts within a single switched network.
<snip/>
--
Peter and Karin Dambier
Cesidian Root - Radice Cesidiana
Rimbacher Strasse 16
D-69509 Moerlenbach-Bonsweiher
+49(6209)795-816 (Telekom)
+49(6252)750-308 (VoIP: sipgate.de)
mail: peter@peter-dambier.de
mail: peter@echnaton.arl.pirates
http://iason.site.voila.fr/
https://sourceforge.net/projects/iason/
http://www.cesidianroot.com/
-
James R. Cutler
james.cutler@consultant.com
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<font size=3>Just for the record about DECNet:<br><br>
At the peak of population, I managed naming and addressing assignments
for a DECNet network with just over 8000 nodes. Local routers were mostly
Digital Equipment, some wide area used Cisco. After a major split
in the network, the remaining 3500 or so Phase IV nodes coexisted happily
with AppleTalk, IPX, and IP hosts on a Cisco backbone. My
multiprotocol workstation was an Apple Macintosh IIci. Of course, by now
the routing network is all IP based with several tens of thousands of
routes in the default-free internal network.<br><br>
<x-tab> </x-tab>Cutler<br>
<x-tab> </x-tab>When I
switch, it is from Windows to Mac OS X<br><br>
At 8/26/2007 11:06 AM +0200, Peter Dambier wrote:<br>
John Osmon wrote:<br>
<blockquote type=cite class=cite cite="">I<snip><br>
Years ago, I worked on a academic network where we had a mix<br>
of IPX, DECnet, Appletalk, and IP(v4). Not all of the routers<br>
actually routed each protocol -- DECnet wasn't routable, and I
recall<br>
some routers that routed IPX, while bridging
IP...</blockquote><Snip><br>
I remember old DECNET, DDCMP, IPX and NetBios days.<br>
I used to have a couple of 19.2 kilobaud async lines, 2 arcnets and<br>
an ethernet (thinwire technology but on RG13U cables, almost yellow
wire<br>
and UHF connectors - PL-259 like CB-radio).<br><br>
DDCMP could route, IPX could and NetBios was riding on either IPX or<br>
DDCMP so it did not matter.<br>
<snip/><br>
In its best times the network was seeing some 1000 hosts. Everything<br>
was running 10 MBit ethernet. there were 9 segments and no
routers.<br><br>
I have seen you could put some 30 NetBios PCs into a single segment<br>
or more than 200 DECNET hosts if they were connected via switches
and<br>
thinwire transceivers.<br><br>
Today without thinwire or yellow cable and with switches that can do<br>
1 Gbit between switches and 100 Mbit to devices you should be able
to<br>
keep some 1000 hosts within a single switched network.<br>
<snip/><br>
-- <br>
Peter and Karin Dambier<br>
Cesidian Root - Radice Cesidiana<br>
Rimbacher Strasse 16<br>
D-69509 Moerlenbach-Bonsweiher<br>
+49(6209)795-816 (Telekom)<br>
+49(6252)750-308 (VoIP: sipgate.de)<br>
mail: peter@peter-dambier.de<br>
mail: peter@echnaton.arl.pirates<br>
<a href="http://iason.site.voila.fr/" eudora="autourl">
http://iason.site.voila.fr/<br>
</a><a href="https://sourceforge.net/projects/iason/" eudora="autourl">
https://sourceforge.net/projects/iason/<br>
</a><a href="http://www.cesidianroot.com/" eudora="autourl">
http://www.cesidianroot.com/<br><br>
</a></font><x-sigsep><p></x-sigsep>
<font face="Courier, Courier" size=3>-<br>
James R. Cutler<br>
james.cutler@consultant.com<br>
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