From owner-freebsd-current@FreeBSD.ORG Thu Feb 5 16:49:43 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 66D8116A4CE for ; Thu, 5 Feb 2004 16:49:43 -0800 (PST) Received: from odin.ac.hmc.edu (Odin.AC.HMC.Edu [134.173.32.75]) by mx1.FreeBSD.org (Postfix) with ESMTP id 9F72E43D5C for ; Thu, 5 Feb 2004 16:49:35 -0800 (PST) (envelope-from brdavis@odin.ac.hmc.edu) Received: from odin.ac.hmc.edu (IDENT:brdavis@localhost.localdomain [127.0.0.1]) by odin.ac.hmc.edu (8.12.10/8.12.3) with ESMTP id i160nR2h026183; Thu, 5 Feb 2004 16:49:27 -0800 Received: (from brdavis@localhost) by odin.ac.hmc.edu (8.12.10/8.12.3/Submit) id i160nQu9026182; Thu, 5 Feb 2004 16:49:26 -0800 Date: Thu, 5 Feb 2004 16:49:26 -0800 From: Brooks Davis To: mrcpu@cdsnet.net Message-ID: <20040206004924.GB20813@Odin.AC.HMC.Edu> References: <20040203213456.GT50677@backmaster.cdsnet.net> <200402051417.00117.sam@errno.com> <20040206003112.GU50677@backmaster.cdsnet.net> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="TakKZr9L6Hm6aLOc" Content-Disposition: inline In-Reply-To: <20040206003112.GU50677@backmaster.cdsnet.net> User-Agent: Mutt/1.5.4i X-Virus-Scanned: by amavisd-milter (http://amavis.org/) on odin.ac.hmc.edu cc: Sam Leffler cc: current@freebsd.org Subject: Re: VLAn support for atheros/Prism? 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: Fri, 06 Feb 2004 00:49:43 -0000 --TakKZr9L6Hm6aLOc Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Feb 05, 2004 at 04:31:12PM -0800, mrcpu@cdsnet.net wrote: > Well, I'm just looking through the specs of the microtik stuff, and they > say they have vlan support over wireless now. >=20 > I can fudge the VLAn support, at the cost of a reduced MTU using the > "software emulation" vlan tagging, or whatever it is that FreeBSD does, > and bridge those packets, but that's not the same as true hardware VLAN > tagging. You've got a serious misconception about how vlans work. The only hardware support that is required is support for a wire MTU of 1504 bytes so the tag fits on the packet without reducing payload size. Some interfaces have support for removing the tag from the packet for you and indicating the tag out of band, but that's only an optimization. -- Brooks --=20 Any statement of the form "X is the one, true Y" is FALSE. PGP fingerprint 655D 519C 26A7 82E7 2529 9BF0 5D8E 8BE9 F238 1AD4 --TakKZr9L6Hm6aLOc Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) iD8DBQFAIuSSXY6L6fI4GtQRAgztAJ4zWITbV82wFWePEbfQrWzoyRgv3wCfdR20 rRQwzls2il2mfuyUHuDHYFY= =yLN6 -----END PGP SIGNATURE----- --TakKZr9L6Hm6aLOc--