You guys are simply fantastic. Thanks for your time!
To wrap it up:?
No SNA in VM/370 including CE - full stop. The only way to reach it from a terminal or terminal emulation is to tn3270 to the Hercules console port.
A 3174 with a 2.4MB Floppy is equipped to boot large microcode with the features necessary to use tn3270 as a protocol to attach a CUT terminal to a mainframe's tn3270 port.?
This tn3270 traffic might be funnelled through a router like a Cisco (network bridge).?
There are working examples (config panels9 on how to configure a 3174 to connect the CUT terminal via tn3270.7
?
The intended topology of this fellow vintage mainframe guy is to connect the terminal (dunno if it is DFT or CUT) to the 3174, from there to the Cisco he owns via X.25 and from there via DLSw to Hercules (maybe over the Internet, I'd be happy to volunteer) and then into preferably VM/370 - which will not happen according to the information you guys provided due to the lack of SNA in VM/370. That fellow guy is also concerned about the SNA configuration (e.g. VTAM node config in MVS if the target was MVS) which shouldn't be too much of a problem if I was reading the information about 3705.c and DLSw support right.?
So I will come back to him and check?
- does he have a CUT terminal
- is his 3174 capable of communicating to a mainframe using tn3270 over TCP/IP -> 2.4MB Floppy for big microcode
I reckon the comms between the 3174 and the Cisco might well be X.25 instead of Token Ring. From the Cisco he would have to decide if he stays on local Ethernet or routes through the WAN to some hosted Hercules service.?
?
Now if his 3174 supports tn3270 via TCP/IP this would make the life a whole lot easier also for him - no SNA worries and VM/370 as a possible target. I'll let you know how this turned out.?
Thank you again for your insights!?
?
Michael
?
--
TK5? ? ? ? on Raspberry Pi 5 with Raspberry OS "bookworm"
TK4-? ? ? on Raspberry Pi 5 with Raspberry OS "bookworm"
VM/370 on Raspberry Pi 5 with Raspberry OS "bookworm"
Lime and limpid green, a second scene
Now fights between the blue you once knew
Floating down, the sound resounds
Around the icy waters underground
Jupiter and Saturn, Oberon, Miranda and Titania
Neptune, Titan, stars can frighten
(Syd Barrett of Pink Floyd)
Michael Grom