From owner-freebsd-questions Sat Feb 28 02:07:22 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id CAA19761 for freebsd-questions-outgoing; Sat, 28 Feb 1998 02:07:22 -0800 (PST) (envelope-from owner-freebsd-questions@FreeBSD.ORG) Received: from Kitten.mcs.com (Kitten.mcs.com [192.160.127.90]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id CAA19753 for ; Sat, 28 Feb 1998 02:07:17 -0800 (PST) (envelope-from font@Jupiter.Mcs.Net) Received: from Jupiter.Mcs.Net (font@Jupiter.mcs.net [192.160.127.88]) by Kitten.mcs.com (8.8.7/8.8.2) with ESMTP id EAA27814 for ; Sat, 28 Feb 1998 04:07:17 -0600 (CST) Received: from localhost (font@localhost) by Jupiter.Mcs.Net (8.8.7/8.8.2) with SMTP id EAA09762 for ; Sat, 28 Feb 1998 04:07:16 -0600 (CST) Date: Sat, 28 Feb 1998 04:07:16 -0600 (CST) From: Font To: questions@FreeBSD.ORG Subject: Unexplainable? delay when ftping Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG When ftp'ing from home into work over ppp, I'll notice the modem lights inactive for several moments during file transfer. This makes the transfers much less efficient. The modem doesn't seem to be retraining, because if I do something else like ping the ftp server, the response comes back right away, between the file transfer pauses. The ftp server is running 2.2.5-RELEASE, the ftp client is running 2.2.5-RELEASE. The ftp server has an Intel EtherExpress Pro/100B on a 10baseT network with MTU 1500. The ppp server is a Livingston PortMaster 2e with Framed-MTU = 1500. If, over the same ppp connection, I ftp to an Internet host, I can get the expected transfer rate (2.5+ K/s on a compressed file), but from a host on my LAN I'm only getting 1.7-1.9 K/s on the same files. Would packet fragmentation cause a several-second delay in the middle of an ftp session? I did try setting the MTU down to 576 on the PM2e and in my ppp.conf, to no avail. Or are both the client and server in the exchange waiting for something hopefully provided by the other, some kind of ACK that takes a while to sync up on again? I find it wacky, but I'd like to learn what causes this. Plus (and you knew this was coming if you read any of my PortMaster confusion posts, problem which ended up being a misconfigured firewall delaying DNS resolution for extremely long periods of time), Win95 and MacOS don't have this problem when connected over the same PM2e/modem/ftp server. Suggestions welcome. I feel like the anti-Doug White, someone who asks too many questions and answers too few. :-( dw A bug in my MUA causes news.announce.newusers font to be sent to beneficiaries and senders of UCE/SPAM. @ mcs.net Wishes are like dishes. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message