From owner-freebsd-current@FreeBSD.ORG Mon Nov 8 13:45:23 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id A477A16A4CE for ; Mon, 8 Nov 2004 13:45:23 +0000 (GMT) Received: from expert.ukrtel.net (expert.ukrtel.net [195.5.6.10]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8384543D2F for ; Mon, 8 Nov 2004 13:45:21 +0000 (GMT) (envelope-from astesin@ukrtelecom.net) Received: from hoexch005.sl.ukrtelecom.net (sltrans.ukrtel.net [195.5.37.133]) by expert.ukrtel.net (Netscape Messaging Server 3.5) with ESMTP id AAA478D for ; Mon, 8 Nov 2004 15:46:07 +0200 Received: from hoexc010.ho.ukrtelecom.net (hoexc010.ukrtelecom.net [10.10.1.10]) by hoexch005.sl.ukrtelecom.net with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2653.13) id WP8G73LP; Mon, 8 Nov 2004 15:48:20 +0200 Received: by hoexc010.ukrtelecom.net with Internet Mail Service (5.5.2653.19) id ; Mon, 8 Nov 2004 15:45:19 +0200 Message-ID: <1152675CA9EDD71187130002B3CE5ADA10660EB1@hoexc010.ukrtelecom.net> From: astesin@ukrtelecom.net To: freebsd-current@freebsd.org Date: Mon, 8 Nov 2004 15:45:18 +0200 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-Type: text/plain; charset="iso-8859-1" Subject: em0, VLAN and bpf(?) trouble w/RELENG_5 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 08 Nov 2004 13:45:23 -0000 Dear FreeBSD developers, I'we run unto a big problem with RELENG_5, built at Thu Nov 4 15:07:44 2004. Hardware is P-IV 3.0 (HTT off in BIOS), Intel S875WP1E motherboard, Promise SATA RAID onboard (1+0 setup, works fine), and 2 onboard LANs: em0 and fxp0. em0 is in 802.11q VLAN trunk mode, connected to Cisco Catalyst 2950T. vlan0 is configured on top of em0 and acts as an Internet connection of the box, it has a /30 IPv4 address block ("mini-ether") configured (2 addresses used, one is at vlan0, other is Cisco router on the other side). The problem. From time to time, vlan0 stops passing packets at all. At this moments, Catalyst stops seeing MAC of vlan0 (it's the same MAC as em0) in the mantione VLAN (untagged VLAN is also configured at em0 and works fine!). This means that `show mac-address-table vlan XX' command on Catalyst don't show the MAC. The problem can be easily repeated manually. It's enough just to issue a command like `trafshow -I vlan0' of `tcpdump -I vlan0' and voila! vlan0 is out of business, no packets are going through. System is Ok at the same time, no panic, no freeze, just no packets through vlan0 that's it. Rebooting the box cures the problem (for some amount of time). Am I doing something wrong? Or is this a bug somewhere? In 4.* vlans worked without a glitch... Thanks, Andrew