From mboxrd@z Thu Jan 1 00:00:00 1970 From: thomas yang Subject: Re: Ethernet CRC questions Date: Thu, 31 Dec 2009 00:19:45 +0800 Message-ID: References: <1262108376.5941.5.camel@localhost> <1262169433.2247.15.camel@localhost> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: netdev@vger.kernel.org To: Ben Hutchings Return-path: Received: from mail-px0-f189.google.com ([209.85.216.189]:46147 "EHLO mail-px0-f189.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752506AbZL3QTq convert rfc822-to-8bit (ORCPT ); Wed, 30 Dec 2009 11:19:46 -0500 Received: by pxi27 with SMTP id 27so6931976pxi.4 for ; Wed, 30 Dec 2009 08:19:45 -0800 (PST) In-Reply-To: <1262169433.2247.15.camel@localhost> Sender: netdev-owner@vger.kernel.org List-ID: >> >> Does the Ethernet frame CRC (generate and verify in hardware) =A0mak= e >> the TX / RX =A0rate =A0a little smaller , and a longer end-to-end =A0= delay ? > > Relative to what? > Relative to the Ethernet frame without CRC appending / verifying . In IEEE 802.3 standard, all network devices should append/verify CRC? >> =A0Could I disable CRC appending / verifying =A0in the network card = driver >> =A0 on all of my nodes (machines) ? > > Maybe if you want switches to discard everything you send... > So, I should disable CRC appending / verifying on all kinds of network devices in my network? In this way I will TX/RX packets more faster ? -- Thomas