From owner-freebsd-net Fri Oct 25 7:53:24 2002 Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4F0FA37B434 for ; Fri, 25 Oct 2002 07:53:19 -0700 (PDT) Received: from smtp.ericx.net (ethel.ericx.net [204.128.227.33]) by mx1.FreeBSD.org (Postfix) with SMTP id 6222843E65 for ; Fri, 25 Oct 2002 07:53:18 -0700 (PDT) (envelope-from ericx@vineyard.net) Received: from fortiva (FORTIVA.VINEYARD.NET [204.17.195.104]) by smtp.ericx.net (Postfix) with SMTP id 13926163A3; Fri, 25 Oct 2002 10:53:12 -0400 (EDT) Message-ID: <008101c27c36$2d46fb60$68c311cc@vineyard.net> From: "Eric W. Bates" To: "Markko Merzin" Cc: References: Subject: Re: VLAN problems with replies to broadcast Date: Fri, 25 Oct 2002 10:52:44 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 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 ----- Original Message ----- From: "Markko Merzin" To: "Charlie Root" Cc: Sent: Thursday, October 24, 2002 4:16 PM Subject: Re: VLAN problems with replies to broadcast > On Wed, 23 Oct 2002, Charlie Root wrote: > > > The fxp is plugged into an SMC Tigerswitch. The SMC is configured to > > pass VLAN's 5, 10 and 20. > > .... > > > Can anyone suggest some tests I might try or further reading? > > Try SMC Tigerswitch printed manual. Some of the Tigerswitch series models > cannot handle same mac-address in different VLANs. The SMC documentation is a bit lacking. However, this is only a problem with packets in response to a broadcast packet. In my limited understanding I find the behaviour a bit bizarre. ICMP pings will work from a remote windoze machine tagged as VLAN 10 as the packets pass into the switch until it's ARP entry for the freebsd box expires or I deliberately delete it. The arp request shows up at the FreeBSD machine, but the arp-reply back to the Windows machine doesn't get there. Can I trust tcpdump's output? It gives every indication there is a well formed arp-reply packet going back with the correct tag. > -- > Markko > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message