From owner-freebsd-net Thu May 10 23:45:18 2001 Delivered-To: freebsd-net@freebsd.org Received: from imo-m04.mx.aol.com (imo-m04.mx.aol.com [64.12.136.7]) by hub.freebsd.org (Postfix) with ESMTP id 0DEB137B422 for ; Thu, 10 May 2001 23:45:17 -0700 (PDT) (envelope-from raviprasad20@netscape.net) Received: from raviprasad20@netscape.net by imo-m04.mx.aol.com (mail_out_v30.10.) id n.7.152f078 (16216) for ; Fri, 11 May 2001 02:45:10 -0400 (EDT) Received: from netscape.com (aimmail02.aim.aol.com [205.188.144.194]) by air-in01.mx.aol.com (v77_r1.37) with ESMTP; Fri, 11 May 2001 02:45:10 -0400 Date: Fri, 11 May 2001 02:45:10 -0400 From: raviprasad20@netscape.net To: freebsd-net@freebsd.org Subject: size of data to ip layer from tcp layer Mime-Version: 1.0 Message-ID: <2001AD8D.5466FCF3.9513E96F@netscape.net> X-Mailer: Franklin Webmailer 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Hi, This is regarding the size of data from TCP/UDP layer to the ip layer. The number of bytes sent from tcp layer to ip layer to send depends on the tcp MSS (maxium segment size).For an ethernet this size is 1460 bytes. Based on the above my understanding is this. a) Since MSS is 1460 bytes the maximum number of bytes sent from TCP to ip layer cannot exceed this value. b) The maximum sized packet that can be received by ip layer from ethernet device is 1460 bytes. c) In case the packet is fragmented at the sending end, at the receiving after reassembly the maximum packet size cannot exceed 1460 bytes. Please mail me if my understanding is correct. Also whether for ipv6 there is any change. regards ravi prasad __________________________________________________________________ Get your own FREE, personal Netscape Webmail account today at http://webmail.netscape.com/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message