You always need a gateway.
75xx connects directly to Mainframe channel and has a TN3270 server, but
There are other non-cisco solutions, depending on what actually is installed, how many
users, $$.
If Mainframe has ethernet (3172, OSA card, or other) and NT+ SNA Server (microsoft) or
Communications Server (IBM) or Host on Demand (IBM).
- Novell for SSA ( you might also use it with TR)
- X25+Reflection+ SNA Server
Overall information on IP/SNA is best on IBM Website, they have a lot of people doing
this everyday.
John Neiberger wrote:
> 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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