Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!uunet!seismo!uwvax!oddjob!gargoyle!ihnp4!inuxc!iuvax!pur-ee!uiucdcs!uxc.cso.uiuc.edu!german From: german@uxc.cso.uiuc.edu Newsgroups: comp.sys.ibm.pc Subject: Re: Help with 3COM Ethernet network and Message-ID: <174200063@uxc.cso.uiuc.edu> Date: Wed, 19-Aug-87 13:54:00 EDT Article-I.D.: uxc.174200063 Posted: Wed Aug 19 13:54:00 1987 Date-Received: Sat, 22-Aug-87 10:59:46 EDT References: <18598J5U@PSUVM> Lines: 15 Nf-ID: #R:<18598J5U@PSUVM>:-16:uxc.cso.uiuc.edu:174200063:000:751 Nf-From: uxc.cso.uiuc.edu!german Aug 19 12:54:00 1987 One possible cuprit would the the interrupt level of the ethernet card conflicting with that of the COM port you are using. I am not positive that the AT&T 6300's COM ports would use the same interrupt level, but on the IBM PC & PC/ATs COM1 is IRQ 4 and COM2 is IRQ 3. You would probably want to use IRQ 2 on the ethernet cards unless that conflicted with some other piece of hardware in the machine. (3270 emulation cards for example) I have not tried your exact configuration, but this is the type of problem you run accross from time to time when dealing the PC networks. Greg German (german@uxc.CSO.UIUC.EDU) (217-333-8293) US Mail: Univ of Illinois, CSO, 1304 W Springfield Ave, Urbana, IL 61801 Office: 181 Digital Computer Lab.