From mboxrd@z Thu Jan 1 00:00:00 1970 From: jamal Subject: Re: [iproute2] tc action mirred question Date: Wed, 16 Sep 2009 08:28:19 -0400 Message-ID: <1253104099.4584.9.camel@dogo.mojatatu.com> References: <404956.88336.qm@web111607.mail.gq1.yahoo.com> <1252376168.5244.11.camel@dogo.mojatatu.com> <313388.35529.qm@web111617.mail.gq1.yahoo.com> <1252534266.4119.5.camel@dogo.mojatatu.com> <204967.7557.qm@web111613.mail.gq1.yahoo.com> <1252671940.25158.5.camel@dogo.mojatatu.com> <510605.34044.qm@web111611.mail.gq1.yahoo.com> <1252704524.25158.42.camel@dogo.mojatatu.com> <833118.87017.qm@web111618.mail.gq1.yahoo.com> Reply-To: hadi@cyberus.ca Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: linux netdev To: Xiaofei Wu Return-path: Received: from mail-yw0-f180.google.com ([209.85.211.180]:37848 "EHLO mail-yw0-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758890AbZIPMav (ORCPT ); Wed, 16 Sep 2009 08:30:51 -0400 Received: by ywh10 with SMTP id 10so3497117ywh.1 for ; Wed, 16 Sep 2009 05:30:55 -0700 (PDT) In-Reply-To: <833118.87017.qm@web111618.mail.gq1.yahoo.com> Sender: netdev-owner@vger.kernel.org List-ID: On Mon, 2009-09-14 at 06:44 -0700, Xiaofei Wu wrote: > On node A I run 'ping 192.168.1.215'(IP addr of node C eth0) on node A, one request 'only' get one reply. It's strange. > On node B, > window1: 'tcpdump -i wlan1 -n -e', I can see the mirroring packets. > window2: 'tcpdump -i wlan2 -n -e', I see noting. > It seems that node B didn't forward the mirroring packects. So I did anotner experiment to check it. > I am sure node B can forward packets. But it didn't forward the mirroring packets, why? (something wrong > with the mirroring packets?) > Please put some effort - these are things you can resolve on your own. Many possibilities on node B: - run netstats to see forwarding stats - run ping from node B to .215 to see if you can reach it. - check ARP tables - add explicit route to .215 - check rpfilter cheers, jamal