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Newsgroups: comp.os.386bsd.bugs Path: sserve!newshost.anu.edu.au!munnari.oz.au!network.ucsd.edu!usc!howland.reston.ans.net!torn!mcshub!todd From: todd@flex.eng.mcmaster.ca (Todd Pfaff) Subject: Re: PPP crash and burn. Message-ID: <1993May28.035129.9447@mcshub.dcss.mcmaster.ca> Keywords: PPP, SLIP, 16450, COM driver Sender: todd@flex.eng.mcmaster.ca Nntp-Posting-Host: flex1.eng.mcmaster.ca Organization: McMaster University References: <1thd31$gbj@turin.research.otc.com.au> <C7MqE4.8uy@zap.uniforum.qc.ca> <BRESSLER.93May27174534@sola.cat-ufg.de> Date: Fri, 28 May 1993 03:51:29 GMT Lines: 44 In article <BRESSLER.93May27174534@sola.cat-ufg.de> bressler@cat-ufg.de (Stefan Bressler) writes: >Great! Your diff saved this problem. But another problem remains at >least on my machine: Sometimes when ppp traffic is high, the system >panics. It seems to be some error in vm_fault. I have experienced a similar problem except there is no indication of a panic; the system just reboots. Nothing is logged to indicate what caused the reboot. I'm running: 486/66 16MB RAM 386bsd + pk0.2.3 PPP 1.2 I haven't installed any COM driver patches and I have 16450 UARTs. I'm having other problems with PPP (and SLIP) which I think may be related to 16450s and/or lack of COM driver updates since I regulary get silo overflows. I have established a PPP or SLIP link (PC->modem(9600 bps + MNP 5) ->terminal server->Sun workstation) and have successfully used telnet and rlogin over this PPP/SLIP connection. The results have been flaky at best. Sooner or later (usually sooner :-) my telnet/rlogin locks up. I can sometimes bring a SLIP link back to life using the slcont script included with the dialup-slip package. If I try to run remote xterm to display on my XFree86 server I get the xterm window but no shell output ever arrives. I've traced the remote xterm process and see that it's waiting in a select call. Another problem: I don't get any response if I ping the Sun at the other end of the SLIP/PPP link. I know that there is an option in some SLIP implemtations to drop ICMP packets but I haven't (knowingly) configured this option. Why would I be able to telnet if I can't ping the remote host? Can anyone tell me if my problems will be resolved by using 16550 UARTs or installing COM driver patches? -- -- Todd Pfaff \ Internet: todd@flex.eng.mcmaster.ca Dept. of Mechanical Engineering \ Voice: (416) 525-9140 x2902 McMaster University \ FAX: (416) 572-7944