From owner-freebsd-questions Sun Dec 13 17:35:06 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id RAA09460 for freebsd-questions-outgoing; Sun, 13 Dec 1998 17:35:06 -0800 (PST) (envelope-from owner-freebsd-questions@FreeBSD.ORG) Received: from awfulhak.org (awfulhak.force9.co.uk [195.166.136.63]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id RAA09452 for ; Sun, 13 Dec 1998 17:35:01 -0800 (PST) (envelope-from brian@Awfulhak.org) Received: from keep.lan.Awfulhak.org (keep.lan.Awfulhak.org [172.16.0.8]) by awfulhak.org (8.8.8/8.8.8) with ESMTP id BAA19718; Mon, 14 Dec 1998 01:34:55 GMT (envelope-from brian@Awfulhak.org) Received: from keep.lan.Awfulhak.org (localhost [127.0.0.1]) by keep.lan.Awfulhak.org (8.9.1/8.9.1) with ESMTP id BAA22429; Mon, 14 Dec 1998 01:36:10 GMT (envelope-from brian@keep.lan.Awfulhak.org) Message-Id: <199812140136.BAA22429@keep.lan.Awfulhak.org> X-Mailer: exmh version 2.0.2 2/24/98 To: John Matthews cc: questions@FreeBSD.ORG, brian@Awfulhak.org Subject: Re: PPP Serial I/O hangs (unable to receive) In-reply-to: Your message of "Sun, 13 Dec 1998 16:43:12 MST." <199812132343.QAA01800@nethawk.qtscorp.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Mon, 14 Dec 1998 01:36:10 +0000 From: Brian Somers Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > I am noticing something strange and I wondering if anyone can make any > suggestions to help furhter isolate a problem I'm seeing with the Serial I/O > hanging within PPP. What I'm noticing is that if I am loading the ppp > interface with a bidirectional traffic load, the serial port will lock > up almost always within 5 to 10 minutes. It looks like it's on the receive > side only. PPP will still transmit packets out and I've prooved to myself > that they are getting out. This also happens with pppd so my guess is that > it's in the kernel sio driver somewhere. This seems to happen with FreeBSD > 2.2.6 as well as the recent 3.0 release. I'm using an Courier-I ISDN modem > with StarTek 16650 UARTS clocked at 230,400 bps but the problem also ocurrs > with some NS16550AFN UARTS that I have. I know it's not the hardware because > I can run the DOS based IPROUTE software beautifully on the same hardware > without any problems. Dos anyone have any suggestions? I hate to ``pass the buck'', but it sounds suspiciously like there may be a problem with the remote ppp (maybe a routing thing?). As you point out, the only thing that ppp & pppd share is the sio driver, and I'd be surprised if that came up with the ability to send stuff but not receive... (yeah, I know, famous last words). > John Matthews -- Brian Don't _EVER_ lose your sense of humour ! To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message