From: brian@SJF.Novell.COM (Brian Meek)
Subject: Re: Dialup SLIP software for PCs?
Organization: Novell, Inc.
Date: Sat, 19 Dec 1992 07:06:24 GMT

In article <1992Dec12.111102.19923@newstand.syr.edu> cychiu@rodan.acs.syr.
edu (Chien-yuan  Chiu) writes:>In article <2b286ec7.2d55@lhn.gns.cri.nz> 
mdlcpgs@lhn.gns.cri.nz writes:>>I cant find an FAQ for this so perhaps 
someone can answer. I am>>looking for TCP implementation for PCs that will 
allow a dial-up>>SLIP connection to an Internet host. Have a LAN that needs 
Internet>>access but cant at this stage get a dedicated line. 
>>
>>The LAN is Lan Manager 2.1 and uses Microsoft Mail. Can these be used
>>to set it up?
>>	Thanks, Phil
>
>Me too!

I'm not sure that the Phil really wants a PC-based slip implementation 
as an automatic-dialup IP router for all of the users of the LAN.

A number of different choices are open to you here.  If there's a UNIX box 
handy on the local side, check out Morningstar's offerings... 
ftp.morninstar.com archives docs about PPP and SLIP, and a demo version for 
most flavors of UNIX.  A good PC-based solution is the NetWare MultiProtocol 
Router with the WAN Links option (though the support for async lines isn't 
quite done yet), and I've used the Telebit NetBlazer in a very happy way to 
accomplish this as well.  With the dialup router approach, Internet access 
from all nodes is available and it will run with your existing IP 
implementation.  

If a PC workstation-based SLIP implementation is really the way to go, 
Jason Leavitt wrote a timely article that can be found in a recent issue of 
Open Systems Today that describes 4 commercial offerings that provide for 
what you're after.  A technology that seems to be coming rapidly more 
popular.  The one I'm most familiar with of course is ours :-), and because  
it's made by Novell, you might not consider it for use in a LAN Manager site 
unless I described how it would work.  So here goes...

The v4.1 release of LAN WorkPlace for DOS can support up to 4 IP 
interfaces, one of which can be an ODI driver that comes in the box and 
provides automatic async dialup connection establishment for SLIP, CSLIP or 
PPP links.  In the LAN Manager scenario, it looks something like this:

         FTP/TELNET/etc        LAN Mananger Client
         --------------        -------------------
         Novell TCP/IP         MS NetBEUI
           |       |               | 
           |       |           ODINSUP v1.21 (an NDIS adapter)
         -----------------------------------------------------
           |       |   ODI Link Support Layer
           |       |               |
         -----------------------------------------------------
           |       ------ODI Link Driver (3C503.COM, whatever)
         SLIP_PPP.COM              |
           |                  LAN Adapter
         COM?:                     |
           |                  Ethernet/Token-Ring (TCP/IP & NetBEUI)
           |                   
         Modem ---> Internet                  
               
Here, most IP connections might be to hosts on the local Ethernet, but 
when an IP packet is destined for an Internet host, the SLIP_PPP driver
can dial the phone, establish the SLIP or PPP connection and make the 
connection.  LAN Mananger runs uninterrupted over NetBEUI, or it can be 
run over the Novell RFC NetBIOS of LAN WorkPlace.  

-- brian
___________________________________________________________________________
Brian Meek                      Novell, Inc. -- Desktop Systems Group
                                Internet mail:  brian@Novell.COM