From owner-freebsd-questions  Sat Oct  3 00:37:19 1998
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Received: (from majordom@localhost)
          by hub.freebsd.org (8.8.8/8.8.8) id AAA11494
          for freebsd-questions-outgoing; Sat, 3 Oct 1998 00:37:19 -0700 (PDT)
          (envelope-from owner-freebsd-questions@FreeBSD.ORG)
Received: from abc.xyz.net (froggy.anchorage.ptialaska.net [208.151.119.238])
          by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id AAA11477
          for <questions@FreeBSD.ORG>; Sat, 3 Oct 1998 00:37:10 -0700 (PDT)
          (envelope-from groggy@iname.com)
Received: from localhost (localhost [127.0.0.1])
	by abc.xyz.net (8.8.8/8.8.8) with SMTP id XAA02621;
	Fri, 2 Oct 1998 23:37:38 -0800 (AKDT)
	(envelope-from groggy@iname.com)
Date: Fri, 2 Oct 1998 23:37:38 -0800 (AKDT)
From: Steve Howe <groggy@iname.com>
X-Sender: abc@abc.xyz.net
To: Stacy Olivas <olivassq@naf-navy.misawa.af.mil>
cc: questions@FreeBSD.ORG
Subject: Re: PPP question
In-Reply-To: <Pine.BSF.3.96.981003154738.4820A-100000@naf-navy.misawa.af.mil>
Message-ID: <Pine.BSF.3.96.981002233438.2359E-100000@abc.xyz.net>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Sender: owner-freebsd-questions@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.ORG


> Today, I was using a windows routing program to test some things out, and
> sure enough, 10 minutes into the connection I started to see FCS error
> messages.

> My question isL
> What is an FCS errr, what causes it and how can it be fixed?

FCS = frame check sequence.

it's used by HDLC (the layer below PPP), nothing
more than a form of checksum.  if it is bad, it means
your frames of data are corrupt.  usually a result of
line noise, overruns, etc.

it can be fixed by making good physical connections
and by using quality hardware, with sizable buffering.


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-questions" in the body of the message