Re: Does Hercules support SNA?

On 9/11/19 8:50 PM, Grant Taylor gtaylor-gHMVqx8RTmrtC6uA/[email protected] 
[hercules-390] wrote:
> Does Hercules support SNA?

I'm replying to multiple messages in this one message to keep from 
spamming the list.



On 9/14/19 8:19 AM, ''Fish' (David B. Trout)' [email protected] 
[hercules-390] wrote:
> I don't know. I'm personally unfamiliar with SNA. Have you TRIED it?

No, not yet.  (See more details in my reply to Jon.)



On 9/14/19 9:08 AM, Ivan Warren [email protected] [hercules-390] wrote:
> There is an experimental SNA 3705 LU Type 4 Controler/NCP emulator 
> (with a fixed configuration).
> 
> Also CTCE supports may allow LU TYPE 5 between VTAM instances (but 
> it requires a VTAM with cross SSCP support).
> 
> There is however no known support/controler emulator for 3x74 
> configuration type C (SNA) controlers.

Interesting.

Thank you for the threads to pull at.



On 9/14/19 9:43 AM, Jon Perryman jperryma-yBeKhBN/[email protected] [hercules-390] wrote:
> SNA is a software feature. You would either need SNA control units 
> or emulators for those control units.. In theory, it should work but 
> it's not a hot topic for Hercules.

I thought I had read somewhere that it required something that Hercules 
didn't /yet/ have from an (emulated) hardware perspective.  I'll have to 
track that down.

> For MVS 3.8J, I believe cpu to cpu used a 37x5 controller. For 
> terminals, we used SNA 3274's.
> 
> For later release's, cpu to cpu used CTC's, escons and probably 
> several others that I can't remember. I believe in these cases, SNA 
> processing was actually in MVS instead of an SNA controller. At some 
> point, I believed IBM created anynet to allow SNA thru TCP..

Hum.

I need to track down what I was reading and see if it was possibly 
stated addressing specific versions of MVS / OS/390 / z/OS.



On 9/14/19 3:51 PM, Jon Perryman jperryma-yBeKhBN/[email protected] [hercules-390] wrote:
> Yes, the op asked if hercules works with SNA. I doubt that is the 
> actual question they had in mind but if they understand it's a software 
> thing, then they are closer to asking what they really want to know.

I realize that SNA is largely a software thing.  But I think there is an 
emulated hardware component as well.  Perhaps it's the lack of the 37x5 
controller emulation that you previously stated causing issues for MVS 3.8J.



Backstory:  I'm in the process of buying a P/390-E and it does support 
SNA over the emulated network components / controller (?).

I'm hoping to be able to install Personal Communications on test 
machines (x86 VMs) and establish SNA (DLC via 802.2 LLC) between the 
test machine and the P/390-E.

I'd also like to see if I can get an old copy of Microsoft SNA Server to 
talk to OS/390 (running on the P/390-E).

If I'm feeling particularly froggy, I'll even see if I can get an old 
version of Linux (2.3<ish> kernel?) to talk to the P/390-E

Pontificating this made me wonder if I could do something similar with 
Hercules.  Hence the question, "Does Hercules support SNA?".

*If* I could get SNA to work in Hercules, I might even be tempted to try 
to get the systems to talk to each other.

I am obviously *WAY* out of my depth here, but I'm trying to learn as I 
go.  I have many itches to scratch, and SNA (DLC via 802.2 LLC) is just 
one of them.  (There may even be some DLSw in there for giggles.)

Thank you all for the replies.



-- 
Grant. . . .
unix || die



[Non-text portions of this message have been removed]