From owner-freebsd-net Fri Nov 30 13: 4:26 2001 Delivered-To: freebsd-net@freebsd.org Received: from pcslink.com (pcslink.com [206.43.160.1]) by hub.freebsd.org (Postfix) with ESMTP id 918EF37B416 for ; Fri, 30 Nov 2001 13:04:12 -0800 (PST) Received: (from ryan@localhost) by pcslink.com (8.9.3/8.9.2) id OAA33617 for freebsd-net@freebsd.org; Fri, 30 Nov 2001 14:04:12 -0700 (MST) (envelope-from ryan) Date: Fri, 30 Nov 2001 11:04:12 -1000 From: Ryan Mooney To: freebsd-net@freebsd.org Subject: Capturing packets w/ bad CRC's? Message-ID: <20011130110412.D2514@pcslink.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0i Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Hello, I'm trying to write an ethernet level network tester to test a wireless gigabit product the company I'm working for has developed. I need to be able to get packets off a Gig-E interface that have bad CRC checksums so I can see how badly mangled they are. I've tried using pcap and ng_ether int: lowerboth of which are giving me just the "good" packets. Right now they are being discarded somewhere below the bpf interface. I'm not sure where, I've read through a bunch of the *if* code, but I don't see it there. I did see some stuff in the 100Mb cards, but thats not really going to work here, since I'm pushing ~600Mb/s on the box doing the packet generation.. I'm using ti and sk cards (either/or...) If anyone knows how I can get the bad packets to examine them, I'd much appreciate it. Thanks. -- >-=-=-=-=-=-=-<>-=-=-=-=-=-<>-=-=-=-=-=-<>-=-=-=-=-=-<>-=-=-=-=-=-=-< Ryan Mooney ryan@pcslink.com <-=-=-=-=-=-=-><-=-=-=-=-=-><-=-=-=-=-=-><-=-=-=-=-=-><-=-=-=-=-=-=-> To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message