From owner-freebsd-net Fri Mar 30 19:55:46 2001 Delivered-To: freebsd-net@freebsd.org Received: from whizzo.transsys.com (whizzo.TransSys.COM [144.202.42.10]) by hub.freebsd.org (Postfix) with ESMTP id 58EA837B71A for ; Fri, 30 Mar 2001 19:55:44 -0800 (PST) (envelope-from louie@whizzo.transsys.com) Received: from whizzo.transsys.com (localhost.transsys.com [127.0.0.1]) by whizzo.transsys.com (8.11.3/8.11.0) with ESMTP id f2V3tf299146; Fri, 30 Mar 2001 22:55:41 -0500 (EST) (envelope-from louie@whizzo.transsys.com) Message-Id: <200103310355.f2V3tf299146@whizzo.transsys.com> X-Mailer: exmh version 2.3.1 01/18/2001 with nmh-1.0.4 To: Brett Glass Cc: freebsd-net@FreeBSD.ORG X-Image-URL: http://www.transsys.com/louie/images/louie-mail.jpg From: "Louis A. Mamakos" Subject: Re: Transition from modem PPP to PPPoE References: <4.3.2.7.2.20010330201802.00dc8f00@localhost> In-reply-to: Your message of "Fri, 30 Mar 2001 20:27:38 MST." <4.3.2.7.2.20010330201802.00dc8f00@localhost> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Fri, 30 Mar 2001 22:55:41 -0500 Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org > while I'm not intimately familiar with PPPoE, it's obvious that > it cannot use IP addresses for its underlying communication; it must use > MAC addresses and have its own DLC mechanism. This suggests that its > packets probably have a unique Ethertype. Does anyone know offhand what > that type is, so that we can instruct the bridges to allow it through? > (Currently, the bridges only allow TCP, UDP, ICMP, and ARP and block > types such as IPX.) Yes, it uses two different registered ethernet types (which I/UUNET paid $5000 to the IEEE to get) and they are (from RFC-2516): The ETHER_TYPE is set to either 0x8863 (Discovery Stage) or 0x8864 (PPP Session Stage). See http://www.ietf.org/rfc/rfc2516.txt for more details on the protocol, if you care. louie To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message