From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 26 Jan 2001 13:02:03 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 26 Jan 2001 13:01:53 -0500 Received: from pop.gmx.net ([194.221.183.20]:15719 "HELO mail.gmx.net") by vger.kernel.org with SMTP id ; Fri, 26 Jan 2001 13:01:42 -0500 Message-ID: <3A71BB68.21B998AB@gmx.de> Date: Fri, 26 Jan 2001 19:01:12 +0100 From: Martin Rauh X-Mailer: Mozilla 4.6 [de] (WinNT; U) X-Accept-Language: de MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: Packet loss in IP/UDP Stack? Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi folks, It seems that we are loosing packets in the UDP stack. Somebody might think that this is not astonishing, but the packets are not lost at the network layer. They seem to get lost in the IP/UDP Layer of the receiving box. We have got the following configuration: Two linux boxes (P4, 733 MHz, 256 MB RAM, kernel 2.4.0) are directly connected with two syskonnect sk98xx gigabit ethernet cards. We are sending a file from one host to the other with UDP. About half of the file is lost in the receiving application. But according to the statistics in /proc/net/dev no errors (fifo, frame, dropped...) occured in the network layer. Even the transmitted and received data at the network layer (tx-bytes, -packets) are identical to the amount of the transfered file (plus network overhead). Doas anybody know where the loss occurs? Is there a loss at the network layer or in the higher protocol layers? Many Thanks, Martin Rauh - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/