From mboxrd@z Thu Jan 1 00:00:00 1970 From: carlsonj@workingcode.com Date: Fri, 15 Oct 2004 18:55:15 +0000 Subject: Re: absolutely baffled as to why PPP link doesn't allow pings Message-Id: <16752.7443.381436.601249@carlson.workingcode.com> List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ppp@vger.kernel.org Robert P. J. Day writes: > well, we're making progress, although not the way i would have liked. > as a simple test, we just hooked up the serial ports of the systems > direct connect with a serial cable, and PPP worked just dandy. > > putting the modems back in the circuit re-introduced the problem. so > it could be the modems or the initialization strings we're using. > back to the drawing board ... That certainly points in a different direction. One possibility is that you're running into flow control problems or transparency issues with the modems. If they're like USR modems, then "AT&F1" usually does the trick. If they're not, then see the manual. :-/ Two things to try: "asyncmap 0xa0000" and "noasyncmap". The former will escape XON/XOFF characters, on the theory that the modems are eating those characters by default. The latter will escape all control characters. -- James Carlson