Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!uunet!ncrlnk!ncrcce!mercer From: mercer@ncrcce.StPaul.NCR.COM (Dan Mercer) Newsgroups: comp.protocols.ibm Subject: Re: TCP/IP over SNA Message-ID: <1555@ncrcce.StPaul.NCR.COM> Date: 27 Sep 89 21:29:07 GMT References: <8909261253.AA07662@jade.berkeley.edu> Reply-To: mercer@ncrcce.StPaul.NCR.COM (Dan Mercer) Organization: NCR Comten, Inc. Lines: 64 In article <8909261253.AA07662@jade.berkeley.edu> "Kevin P. Kleinfelter"writes: :robert@peregrine.UUCP (Robert Young) writes: : :>In article <1079@ks.UUCP> drake@ibmarc.UUCP (Sam Drake) writes: :>>This isn't a commercial, but ... :>> :>>IBM's VM and MVS TCP/IP products can transport TCP/IP over SNA networks, :>>and there's a PRPQ available from IBM to allow the RT to do the same. :>> :>>Sam Drake / IBM Almaden Research Center : :[Stuff about connections suggested by IBM omitted.] : :>So far it looks like the IBM people we deal with are not completely sure :>about any clear solutions. :>Any clues would really be appreciated. : :O.K. I have spent quit a bit of time hashing this out with many different :people, and this is how it looks to me: : :1. You CAN send TCP/IP over SNA -- in SOME cases. : To attach SNA to TCP/IP (using AVAILABLE hardware/software) you : MUST have a host (i.e. a 370) and a host adapter (I think it is an : 8232). To route TCP/IP over SNA would look as follows: : :workstation---8232--370====(SNA NETW)===370--8232---workstation : :There are plans involving RT's and SDLC links, but they do not seem :(to me) to really be routing TCP/IP over an SNA network. : :2. The "normal" IBM communications hardware (3705, 3174, etc) do : not support TCP/IP connections. You have to attach to a host : at each end of your link. Future versions of the 3705 and 3174 : will probably support TCP/IP, according to an IBM employee : I met at an IBM class, but that is "unofficial." : :3. We don't like the above. We are looking at multiplexing TCP/IP and : SNA over our existing lines, or using an X.25 service, or : using other alternatives to running TCP/IP over SNA. If you find : a better solution, PLEASE POST! (Other people seem to be interested!) : :-- :Kevin Kleinfelter @ Management Science America, Inc (404) 239-2347 :gatech!nanovx!msa3b!kevin Try talking to your local NCR Comten representative for solutions to SNA and non-SNA networking problems. NCR Comten manufactures IBM plug compatible SNA front ends offering both channel and SDLC link attached connectivity. NCR Comten also has a wide ranging offering of connectivity products for non-SNA networks, connecting to both BSC and X.25 hosts. NCR Comten will shortly be offering a TCP-IP product. Initial link connectivity will be via X.25, but an Ethernet interface will also be provided. Your NCR Comten representative should be able to provide you with availability dates. -- Dan Mercer Reply-To: mercer@ncrcce.StPaul.NCR.COM (Dan Mercer)