I went back and read the first question again and realized that I misread
it. I thought Cory was asking how to convert an ip host to speak SDLC or
bisync. I see now that he just wanted to speak to an SNA host.
Just about every PC in our network has a tn3270 client running on it, either
Rhumba or Host Explorer, and those communicate via IP with the TN3270 Server
running on the Channel Interface Processor in our 7513, which is
channel-attached via escon connections to our mainframe.
That's a pricey solution, but if you need that functionality it does the job
quite well.
So, it appears you have some options depending on what you're actually
trying to accomplish. It's possible to make the PC speak SDLC over serial
lines, or you can use tn3270 over IP if you have a tn3270 server available.
John
>
>
> I continued looking into this and found some stuff out. I still hold to
> that I know almost nothing about SNA but heres what I think I learned
> today.. In order for an IP host to talk to an SNA mainframe you need a
> gateway and also some sort of software (like a 3270 emulator) on the IP
host
> to talk to the gateway. The gateway talks IP to the host and SNA to the
> mainframe. The only way to do this without needing a gateway is if you
use
> a Cisco 7000 series router with a card called an ESCON card which can
> function as a gateway. Heres a good link on what I learned. I'm still
> reading it but I thought you might find it interesting. It basically
talks
> about how SNA is on its way out the door being replaced by IP and how a
lot
> of businesses are doing the migration in 4 steps.
>
> http://www.cisco.com/warp/public/cc/so/neso/ibso/snaip_bc.htm
>
> Cory
>
>
> -----Original Message-----
> From: John Neiberger [mailto:[EMAIL PROTECTED]]
> Sent: Tuesday, January 23, 2001 8:49 PM
> To: Stull, Cory
> Subject: RE: sdlc question
>
>
> Wow, thanks! I appreciate the compliment. As I mentioned, I'm not much
of
> an SNA guy, I know just enough to be hazardous. That one server I talked
> about is the only time I've ever seen a Windows-type Intel-based server
> speak SDLC. It's completely vendor-controlled, we just hooked it up to
our
> network and like any of our other SNA devices at they configured it.
> Because of that, I have absolutely no idea what they have running under
the
> hood. I was basically handed a serial cable and they said "Connect this
to
> your router." :-) If I run across some info on it, though, I'll pass it
> along.
>
> John
>
> > Thanks John.. Always appreciate your help. Your a great contributor
to
> > this list.
> >
> > Cory
> >
> > -----Original Message-----
> > From: John Neiberger [mailto:[EMAIL PROTECTED]]
> > Sent: Tuesday, January 23, 2001 5:25 PM
> > To: [EMAIL PROTECTED]
> > Subject: Re: sdlc question
> >
> >
> > Yes, you can do this but I'm not sure of the details. We have
equipment
> > from another vendor in our network that does exactly what you're
talking
> > about. It's an NT server, but it's speaks SDLC on a serial port and
it
> > exists as a PU on our SNA network. The router port is configured in
the
> > same way we would configure it for IBM terminal controllers or our
> Automated
> > Teller Machines.
> >
> > At this point, though, IP is irrelevant so I don't know if this
answers
> your
> > question or not. In this case, you wouldn't really be converting it,
per
> > say, just adding different functionality. It's like asking "Can I
> convert
> > my BMW into a waffle iron?" Well...yes, but it will no longer
resemble a
> > car. :-)
> >
> > I hope that helps. I wish I had some more details to give you but I
> really
> > don't know that much about SNA.
> >
> > Regards,
> > John
> >
> > > legacy protocol guru's,
> > >
> > > Forgive my ingorance on this subject I know almost nothing about
SNA,
> > SDLC,
> > > BYSINC, etc...
> > >
> > >
> > > Can you take an ip host and convert it to speak to an sdlc or
bysinc
> > > mainframe like you would enable an ethernet host to speak token
ring?
> > >
> > > Thanks
> > >
> > > Cory
> > >
> > > _________________________________
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> >
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>
>
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