From owner-freebsd-net Wed Nov 15 12:38:14 2000 Delivered-To: freebsd-net@freebsd.org Received: from ihemail2.firewall.lucent.com (ihemail2.lucent.com [192.11.222.163]) by hub.freebsd.org (Postfix) with ESMTP id 93E8637B4CF for ; Wed, 15 Nov 2000 12:38:11 -0800 (PST) Received: from ihemail2.firewall.lucent.com (localhost [127.0.0.1]) by ihemail2.firewall.lucent.com (Pro-8.9.3/8.9.3) with ESMTP id PAA26978 for ; Wed, 15 Nov 2000 15:38:11 -0500 (EST) Received: from mhmail.mh.lucent.com (h135-3-115-8.lucent.com [135.3.115.8]) by ihemail2.firewall.lucent.com (Pro-8.9.3/8.9.3) with ESMTP id PAA26952; Wed, 15 Nov 2000 15:38:10 -0500 (EST) Received: from lucent.com (positron.micro.lucent.com [192.19.56.129]) by mhmail.mh.lucent.com (8.8.8+Sun/EMS-1.5 sol2) id PAA00444; Wed, 15 Nov 2000 15:38:08 -0500 (EST) Message-ID: <3A12F3DE.4B3951D9@lucent.com> Date: Wed, 15 Nov 2000 15:36:46 -0500 From: "Gary T. Corcoran" Reply-To: gcorcoran@lucent.com Organization: Lucent Microelectronics - Client Access Broadband Systems X-Mailer: Mozilla 4.73 [en] (Win95; U) X-Accept-Language: en MIME-Version: 1.0 To: Julian Elischer Cc: Alex Pilosov , freebsd-net@FreeBSD.ORG Subject: Re: netgraph/atm References: <3A126A2D.7F43B120@elischer.org> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Julian Elischer wrote: > > My question is whether there are any boards that can give us the > physical > interface to a DSL line so that we can run this ATM code over a DSL > line? > It's one thing having the software but the bits need to get out of the > system somehow. You mean other than the Lucent DSL boards (which none of you appear to have?) ? :-) No, I haven't had time to look into netgraph'ifying my driver, and I'm getting pulled in another direction now... :( > One thing I just thought about, is that if we are simulating an > ethernet interface and bridging the packets using mac/llc > then wouldn;t we require that we have some unique MAC address > for that virtual interface so that things don't break? Yes, absolutely. The Lucent DSL boards get a unique MAC address programmed into them by the OEM or the board manufacturer, so that they will work properly in the ethernet bridging modes (where they appear as an ethernet card to the PC when in those modes). > (can we just always use broadcast?) No. Only broadcast packets use the broadcast address. > are the packets multiplexed using destination MAC address? I'm not sure what you're asking here. In the usual case where you're only using one VC, the packets are sent through the channel one at a time, in the order they come down to the driver. For multiple VCs, we learn which MAC destination is connected to which particular VC, and only send the packet on that VC. Broadcast packets go out over all active VC's. Gary To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message