Date: Sun, 13 Dec 1998 16:43:12 -0700 (MST) From: John Matthews <matthews@mail.qtscorp.com> To: questions@FreeBSD.ORG Cc: brian@Awfulhak.org Subject: PPP Serial I/O hangs (unable to receive) Message-ID: <199812132343.QAA01800@nethawk.qtscorp.com>
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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? John Matthews To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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