From owner-freebsd-net@FreeBSD.ORG Tue Feb 26 17:14:24 2008 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id B96701065670 for ; Tue, 26 Feb 2008 17:14:24 +0000 (UTC) (envelope-from dave@raven.za.net) Received: from elektra.opteqint.net (elektra.opteqint.net [209.25.178.105]) by mx1.freebsd.org (Postfix) with ESMTP id B8A7713C46A for ; Tue, 26 Feb 2008 17:14:24 +0000 (UTC) (envelope-from dave@raven.za.net) Received: from [41.242.10.56] (helo=DHA12123) by elektra.opteqint.net with esmtpsa (TLSv1:AES128-SHA:128) (Exim 4.66 (FreeBSD)) (envelope-from ) id 1JU3Nm-000DIv-IM for freebsd-net@freebsd.org; Tue, 26 Feb 2008 09:14:25 -0800 From: "Dave Raven" To: References: In-Reply-To: Date: Tue, 26 Feb 2008 19:14:12 +0200 Message-ID: <03cb01c8789b$04aade30$0e009a90$@za.net> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: Ach4k6OA5ASSj4aBTSahndewAHd0bwABx+iw Content-Language: en-us Subject: RE: Hping/Ping X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 26 Feb 2008 17:14:24 -0000 Hello again, Also, if I use tethereal to sniff for icmp packets to the host I'm pinging I see them all even though I am getting drops -- 23 packets transmitted, 22 packets received, 4% packet loss The last two lines of my tethereal -- 45 22.214610 x.x.x.x -> y.y.y.y ICMP Echo (ping) request 46 22.215133 y.y.y.y -> x.x.x.x ICMP Echo (ping) reply 46/2 (request/reply) = 23. So 23 packets actually went out and returned, yet I still get drops? Thanks again Dave -----Original Message----- From: Dave Raven [mailto:dave@raven.za.net] Sent: Tuesday, February 26, 2008 6:21 PM To: 'freebsd-net@freebsd.org' Subject: Hping/Ping Hi all, I have a problem where my machine is dropping packets and pings after a few days of running (under load). The reason I'm mailing the -net list is because I seem to have tracked down something I'm just not sure where to look now. If I use ping I get 5% drops -- 872 packets transmitted, 827 packets received, 5% packet loss round-trip min/avg/max/stddev = 0.168/2.263/357.140/20.485 ms If I use hping (to the exact same ip with icmp as well) I get none -- 875 packets tramitted, 875 packets received, 0% packet loss round-trip min/avg/max = 0.2/2.5/357.2 ms Is there some buffer filling up? Where can I look to try get more information. Any help/suggestions would be muchly appreciated Thanks Dave