Paul Gilmartin wrote:
Can you envision running the Internet on SNA?
o 8-character flat namespace?
o No DNS?
Or am I mistaking attributes of VTAM for SNA? (But still, where's SNA's DNS?)
SNA isn't networking ... at least in the sense used by most of the rest
of the world. SNA is quite good at managing large number of terminals
... or things effectively emulating large number of terminals
http://www.garlic.com/~lynn/subnetwork.html#emulation
in heavily SNA centric environment, the term "peer-to-peer" networking
was invented to describe standard networking (as understood by most of
the rest of the world) differentiated from SNA communication
infrastructures.
in the early SNA days, my wife had co-authored peer-to-peer networking
architecture with Bert Moldow ... AWP39 (which never got announced as
product, sna group possibly viewed it as competition). Later, when she
was con'ed into going to POK to be in charge of loosely-coupled
architecture ... she originated "peer-coupled shared data"
http://www.garlic.com/~lynn/subtopic.html#shareddata
which didn't see a lot of uptake ... except for the guys doing IMS
hot-standby ... at least until parallel sysplex came along.
the closest thing to networking within any kind of SNA context was
AWP169 ... which the SNA organization non-concurred with announcing.
After some escalation, AWP169 announcement letter ... "APPN" was
carefully crafted to not imply any relationship between AWP169/APPN and
SNA.
I used to chide the person responsible for AWP169 that he was wasting
his time trying to craft networking into SNA context ... they were never
going to appreciate and/or accept him ... he would be much better off
spending his time working within a real networking context like the
internet.
note that the explosion in the internal corporate network in the 70s and
early 80s ... wasn't an SNA implementation either .... however it had a
form of gateway capability implemented in every node. slight drift ...
it was another product brought to you courtesy of the science center
http://www.garlic.com/~lynn/subtopic.html#545tech
as was virtual machines, the (smp) compare-and-swap instruction, the
invention of GML (original ancestor of sgml, html, xml, etc), and
numerous interactive technologies. i've also asserted that all the
performance measurement, modeling, workload profiling, etc, etc ...
evolved into what is now called capacity planning
http://www.garlic.com/~lynn/subtopic.html#benchmark
in any case (in part because of the gateway like function), the internal
network
http://www.garlic.com/~lynn/subnetwork.html#internalnet
was larger than arpanet/internet from just about the beginning until
possibly mid-85. the "arpanet" got its gateway capability with the great
switchover to internetworking protocol on 1/1/83.
http://www.garlic.com/~lynn/subnetwork.html#internet
recent thread that discussed the size of the internal network vis-a-vis
the size of the arpanet
http://www.garlic.com/~lynn/2006j.html#34 Arpa address
http://www.garlic.com/~lynn/2006j.html#45 Arpa address
http://www.garlic.com/~lynn/2006j.html#46 Arpa address
http://www.garlic.com/~lynn/2006j.html#49 Arpa address
http://www.garlic.com/~lynn/2006j.html#50 Arpa address
http://www.garlic.com/~lynn/2006j.html#53 Arpa address
http://www.garlic.com/~lynn/2006k.html#3 Arpa address
http://www.garlic.com/~lynn/2006k.html#8 Arpa address
http://www.garlic.com/~lynn/2006k.html#9 Arpa address
http://www.garlic.com/~lynn/2006k.html#10 Arpa address
http://www.garlic.com/~lynn/2006k.html#12 Arpa address
http://www.garlic.com/~lynn/2006k.html#40 Arpa address
http://www.garlic.com/~lynn/2006k.html#42 Arpa address
http://www.garlic.com/~lynn/2006k.html#43 Arpa address
misc. past posts mentioning awp39 and/or awp169 (appn):
http://www.garlic.com/~lynn/2004n.html#38 RS/6000 in Sysplex Environment
http://www.garlic.com/~lynn/2004p.html#31 IBM 3705 and UC.5
http://www.garlic.com/~lynn/2005p.html#8 EBCDIC to 6-bit and back
http://www.garlic.com/~lynn/2005p.html#15 DUMP Datasets and SMS
http://www.garlic.com/~lynn/2005p.html#17 DUMP Datasets and SMS
http://www.garlic.com/~lynn/2005q.html#27 What ever happened to Tandem
and NonStop OS ?
http://www.garlic.com/~lynn/2005u.html#23 Channel Distances
http://www.garlic.com/~lynn/2006h.html#52 Need Help defining an AS400
with an IP address to the mainframe
http://www.garlic.com/~lynn/2006j.html#31 virtual memory
http://www.garlic.com/~lynn/2006k.html#9 Arpa address
http://www.garlic.com/~lynn/2006k.html#21 Sending CONSOLE/SYSLOG To
Off-Mainframe Server
http://www.garlic.com/~lynn/2006l.html#4 Google Architecture
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