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- Newsgroups: comp.protocols.ibm
- Path: sparky!uunet!wupost!cs.utexas.edu!sun-barr!apple!news.oc.com!matt
- From: matt@ra.oc.com (Matthew Lyle)
- Subject: Re: TCP/IP impact on a S/3090 M/F
- Message-ID: <1992Jul24.053119.7825@ra.oc.com>
- Organization: OpenConnect Systems, Dallas, TX
- References: <1992Jul23.160241.23996@inesc.pt> <1992Jul24.021550.16519@rice.edu> <1992Jul24.031725.5562@ra.oc.com> <1992Jul24.043232.20862@rice.edu>
- Date: Fri, 24 Jul 1992 05:31:19 GMT
- Lines: 52
-
- dboyes@is.rice.edu (David E Boyes) writes:
- >In article <1992Jul24.031725.5562@ra.oc.com> matt@ra.oc.com (Matthew Lyle) writes:
- >>dboyes@is.rice.edu (David E Boyes) writes:
- >>>As a side note, most heavy MVS sites I'm aware of use IBM's TCPIP
- >>>software, but purchase the hardware interfaces from other
- >>>vendors, such as Bus-Tech, Interlink, or OpenConnect Systems.
- >
- >>I've held my tongue this far, but can't let this pass.
- >>servers will not work with IBM's TCP/IP implementation. We have
- >>our own implementations of telnet, ftp, and smtp (to profs or snads)
- >>which work over our OCS servers.
- >
- >Oops; brain fault -- thanks for catching it. I was thinking of
- >your PC 3279G emulator that runs over various DOS TCP protocol
- >stacks (which I use and like a whole lot) and fingers overran brain.
-
- An affliction of which I am quite familiar with... :)
-
- >The point was that few sites I know of buy true-blue IBM
- >controllers for this purpose -- the other vendors generally produce
- >hardware that outperforms the IBM offering by a significant
- >margin -- but many run the IBM software offering with these 3rd
- >party controllers for compatibility and application development.
- >The 3172 is not as fast as it could be, and it's considerably
- >more expensive than most of the other 3rd party options.
-
- >>Needless to say we feel that our
- >>products will outperform IBM's and they definitely utilize far fewer
- >>mainframe resources than IBM's.
-
- >Undoubtedly, they do, but you must agree that it moves the tuning
- >issue from OS tuning for general performance to an access method
- >tuning problem, which is considerably more difficult to approach
- >and measure for someone who may not be familiar with all the gory
- >details. I'm *not* saying that your approach is wrong; it simply
- >changes the nature of the problem, albeit to one that a site with
- >a extensive investment in SNA *should* be relatively familiar with.
-
- In general if our customers require tuning it is done within VTAM. The
- majority of our sites work run with our recommended BIND images. Tuning
- issues really come up most often when someone wants to run FTP's through
- the same PU that they have 3270 traffic. I does change the nature of
- the problem, as you say, from OS tuning to VTAM tuning.
-
- >--
- >David Boyes
- >dboyes@rice.edu
- --
- Matthew Lyle matt@oc.com
- Technical Support Specialist matt@utdallas.bitnet
- West/SW/SE/Mid Atlantic Region (*Phew*)
- OpenConnect System, Dallas, Texas (214) 490-4090
-