From owner-freebsd-questions Thu Nov 13 04:41:16 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id EAA10871 for questions-outgoing; Thu, 13 Nov 1997 04:41:16 -0800 (PST) (envelope-from owner-freebsd-questions) Received: from awfulhak.demon.co.uk (awfulhak.demon.co.uk [158.152.17.1]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id EAA10846 for ; Thu, 13 Nov 1997 04:41:08 -0800 (PST) (envelope-from brian@awfulhak.org) Received: from gate.lan.awfulhak.org (localhost [127.0.0.1]) by awfulhak.demon.co.uk (8.8.7/8.8.7) with ESMTP id MAA15701; Thu, 13 Nov 1997 12:28:40 GMT (envelope-from brian@gate.lan.awfulhak.org) Message-Id: <199711131228.MAA15701@awfulhak.demon.co.uk> X-Mailer: exmh version 2.0zeta 7/24/97 To: Joseph Stein cc: freebsd-questions@FreeBSD.ORG, brian@awfulhak.net Subject: Re: FCS error? In-reply-to: Your message of "Thu, 13 Nov 1997 02:52:27 PST." <199711131052.CAA01027@shasta.wstein.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Thu, 13 Nov 1997 12:28:40 +0000 From: Brian Somers Sender: owner-freebsd-questions@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk > > Phase: HDLC errors -> FCS: 1 ADDR: 0 COMD: 0 PROTO: 0 [.....] > > Phase: HDLC errors -> FCS: 3 ADDR: 0 COMD: 0 PROTO: 0 > > Can somebody (Brian ??? :) tell me please, what an FCS error is, and if > tere is any solution to combatting it? > > I am using FreeBSD-STABLE, recently built (yesterday, 12-Nov from sources > current at 23:00 11-Nov), and have been getting a LOT of these (even before > the rebuild). > > They seem to occur about the same time that I get (either) silo or interrupt > level overflows. [.....] Each lump of ppp data is framed with a couple of initial bytes and a sum at the end. An FCS error is when the sum doesn't add up. It's normally due to flow control, sio overflows or the fact that you're not talking to a ppp program (perhaps ppp has exited and you're trying to parse login prompts). > joe -- Brian , , Don't _EVER_ lose your sense of humour....