From owner-freebsd-net Wed Jan 23 21: 0:43 2002 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 6747F37B445 for ; Wed, 23 Jan 2002 21:00:37 -0800 (PST) Received: from whizzo.transsys.com (#6@localhost.transsys.com [127.0.0.1]) by whizzo.transsys.com (8.11.6/8.11.6) with ESMTP id g0O50ZE96971; Thu, 24 Jan 2002 00:00:35 -0500 (EST) (envelope-from louie@whizzo.transsys.com) Message-Id: <200201240500.g0O50ZE96971@whizzo.transsys.com> X-Mailer: exmh version 2.5 07/13/2001 with nmh-1.0.4 To: "Tony Williams" Cc: freebsd-net@FreeBSD.ORG X-Image-URL: http://www.transsys.com/louie/images/louie-mail.jpg From: "Louis A. Mamakos" Subject: Re: Question on PPPoE References: In-reply-to: Your message of "Thu, 24 Jan 2002 04:14:21 GMT." Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Thu, 24 Jan 2002 00:00:35 -0500 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 We put the session ID in the protocol so that you could support multiple simultanous PPP sessions from the same host over a single Ethernet (bridged ethernet over DSL in most cases) to the session concentrator platform. Imagine one PPP session for Internet access; perhaps another for some corporate telework sort of thing. I don't know of anyone that actually has deployed services which have taken advantage of this, but we didn't want to preclude that sort of use. Louis Mamakos > Hi, > > I have a question regarding PPPoE protocol and code. I recently > changed from dial up to a PPPoE service through a DSL provider > and was successful in setting the FreeBSD 4.2 box up! > > Out of curiousity, I went through some of the code in netgraph and > the rfc specification, but unable to follow the necessity for the > Session ID. the protocol says the peer mac address and the session > id determines a unique session. From one peer, one can have only one > internet connection and mac addresses are unique. Why then the session > id also included in the protocol. What is the advantage of having > session id, it is not there in normal dial up PPP and who uses it? > > In my case, the ISP did not mention anything about the session id > and I have only one session from the PC, i assume > > Thanks > -Tony > > > _________________________________________________________________ > Chat with friends online, try MSN Messenger: http://messenger.msn.com > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-net" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message