cohend@roadkill.rtp.dg.com (Dave Cohen) (03/15/90)
I was following the discussions about a 3com 3c503 problem which caused DOS to lock-up, but never saw a resolution. I have been booting, loading the packet drivers, locking up, then rebooting and reloading for some time now (it always seems to work the second time). Did anyone out there ever stumble across a cause/solution to this behavior ? Thanks.
IJAH400@INDYVAX.IUPUI.EDU ("James A. Harvey") (03/17/90)
I meant to send this to the pcip list also but didn't... In article <1338@xyzzy.UUCP>, Dave Cohen <cohend@dg-rtp.dg.com> writes: >I was following the discussions about a 3com 3c503 problem which caused >DOS to lock-up, but never saw a resolution. I have been booting, >loading the packet drivers, locking up, then rebooting and reloading >for some time now (it always seems to work the second time). Did >anyone out there ever stumble across a cause/solution to this >behavior ? Thanks. I noticed a regular timing interval for the lockups in our environment, which now appears to be due to the presence of Cisco routers running a protocol (IGRP) for which an IP broadcast packet is transmitted every 90 seconds. Further investigation seems to indicate that any broadcast packet received after driver loading (after a boot from poweroff) seems to cause the problem. At least, it does for me. I used ARP broadcasts caused by PINGing a non-existant station; this locks it up real quick (no sense in having to wait 90 seconds :-). Warm-booting seems to be the only way out at the present time. A cold boot from the poweroff state seems to be required to reproduce the problem consistently. So far I've gotten the impression from those familiar with the code that they haven't been able to reproduce the problem, which would make it rather difficult to fix. I'm working on it but only have a limited amount of time to spend on the problem. If anyone hears about a fix for this can you let me know? Please? Many thanks in advance. - Jim Harvey IUPUI Computing Services, DEC Systems Group Internet: ijah400@indyvax.iupui.edu BITNET: ijah400@indyvax Disclaimer: Opinions expressed here are mine, not necessarily those of Indiana University "If you don't know where you're going, you'll probably end up somewhere else"