From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michele Petrazzo - Unipex srl Subject: vlan lost tag Date: Sat, 07 Jun 2008 18:29:40 +0200 Message-ID: <484AB774.3020608@unipex.it> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit To: netdev@vger.kernel.org Return-path: Received: from relay0.fra.interoute.net ([212.23.33.89]:42200 "EHLO relay0.fra.interoute.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1762912AbYFGQzg (ORCPT ); Sat, 7 Jun 2008 12:55:36 -0400 Received: from debian-srv (unknown [89.202.235.9]) by relay0.fra.interoute.net (Postfix) with ESMTP id 7E223BEE4 for ; Sat, 7 Jun 2008 16:29:40 +0000 (UTC) Received: from [192.168.1.103] (michele [192.168.1.103]) by debian-srv (Postfix) with ESMTP id 4BAF77082F for ; Sat, 7 Jun 2008 18:29:40 +0200 (CEST) Sender: netdev-owner@vger.kernel.org List-ID: Hi all, (I hope that this is the right ml, since vlan one seem to be closed). I have a problem with two linux-box configured with a vlan and a HP switch (1700 serie): I configure the switch with the port 2 and 4 (where pcs are connected) for only allow to pass the tag 16, configure both linux-box with vlan 16, but the communication starts but doesn't end. My tests: pc1 -> ping pc2 pc1 -> tcpdump -> vlan 16, p 0, arp who-has pc2 tell pc1 (nothing other, or better, one per second :) ) pc2 -> tcpdump -> arp who-has pc2 tell pc1 pc2 -> tcpdump -> arp reply pc2 is-at XXXX (the mac) And no other traffic. Like you can see, on the pc2, there is no "vlan" string into the tcpdump output... If I try to start the communication from the pc2, it's the same. The packet leave with the vlan 16 and arrive without it. Can be a switch problem? Another try that I do was to disable the switch vlan control (hp call it "vlan aware enabled port") for my two ports and now the traffic shown by tcpdump are both with "vlan 16" and the communication works!!! What can be? Thanks, Michele