Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!sun-barr!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!usc!ucsd!ucbvax!lib.UUCP!thesis1.hsch.utexas.EDU From: thesis1.hsch.utexas.EDU@lib.UUCP (Jay Maynard) Newsgroups: comp.protocols.ibm Subject: Re: IBM Mainframe SNA to TCP/IP Hosts; X-windows, etc Message-ID: <9012012326.AA11156@lilac.berkeley.edu> Date: 1 Dec 90 22:36:08 GMT Sender: daemon@ucbvax.BERKELEY.EDU Reply-To: Jay Maynard Organization: The Internet Lines: 27 In article <12720003@hpspdra.HP.COM> bc@hpspdra.HP.COM (Bill Crandall) writes: >You might try to reconfigure your host so that it doesn't send >a Write Structured Field. Look in the hostgen. >Or check the Query Reply sent by your 3270 emulator to make sure >that it's not telling the host that it supports WSFs. There's a bit >in the Query Reply that indicates that (although it might be >disguised as a "Reserved" bit -- make sure all "Reserved" bits >are turned off). We ran afoul of one other gotcha: Run a VTAM trace on the failing session. Look at the query reply, and make sure it isn't lying about its capabilities. If not, then your host program may be making invalid assumptions about the terminal's capabilities, and acting as though some unspecified capability is there when it wasn't mentioned in the query reply, just because none of the standard terminals acts that way. Case in point: FTP Software's PC/TCP sends query replies saying only that it supports extended highlighting and colors, and no other extended datastream functions. PHOENIX 7.1.1 got that reply and assumed (incorrectly) that the device supported the 3270DS WSF, as well...and things broke. (This is fixed in PHOENIX 7.2, BTW.) If your application makes invalid assumptions, complain at your vendor. -- Jay Maynard, EMT-P, K5ZC, PP-ASEL | Never ascribe to malice that which can jmaynard@thesis1.hsch.utexas.edu | adequately be explained by stupidity. "...flames are a specific art form of Usenet..." -- Gregory C. Woodbury Brought to you by Super Global Mega Corp .com