From mboxrd@z Thu Jan 1 00:00:00 1970 From: Benjamin LaHaise Subject: announce: Babylon PPP (scalable L2TP) 2.0 beta 1 Date: Tue, 1 Jan 2008 18:00:42 -0500 Message-ID: <20080101230042.GH13328@kvack.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii To: netdev@vger.kernel.org Return-path: Received: from kanga.kvack.org ([66.96.29.28]:52989 "EHLO kanga.kvack.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754902AbYAAXBC (ORCPT ); Tue, 1 Jan 2008 18:01:02 -0500 Content-Disposition: inline Sender: netdev-owner@vger.kernel.org List-ID: Hello all, This is an announcement for a new beta release of a decently scalable L2TP stack for Linux. It is based off of the Babylon PPP stack created by SpellCaster back in the '98-'00 timeframe. Right now there are lots of rough edges (especially in terms of documentation), but it works well enough for many purposes. The main difference between the Babylon PPP stack and pppd is that the Babylon code uses a single process for controlling all PPP sessions established throughout the system, which uses significantly less memory and processing power per connection. Practically speaking, a mid range system can terminate thousands of sessions without breaking a sweat. Features - entirely GPLed - can terminate thousands of sessions - includes kernel mode multihop for L2TP - can act as an LAC or LNS - has gigawords accounting for sessions - includes Radius client support - already in use to terminate real L2TP traffic for 2 ISPs. - works on x86/x86-64. Not expected to work on architectures where unaligned memory accesses are problematic. Non-Features - Uses its own kernel mode PPP stack for L2TP and PPPoE. The exact direction for this is open to discussions, but will require lots of work to address the scalability issues. - PPPoE support is not well integrated at present. It works for dial out (kernel mode via drivers/pppoe/pppoed and kernel/bab_pppoe.o) or PPPoE->L2TP conversion (userspace), but not incoming calls as-is. - device nodes are still a work in progress - packaging needs improvement - the kernel code is not at all ready for merging as it needs fairly major cleanup in several areas The README.l2tp file gives a rough description of what is needed to get things going on recent 2.6 kernels, but I've only been testing 2.6.22.5 for this release. Questions/comments are appreciated. The source can be had via git clone http://www.kvack.org/~bcrl/babylon.git/.git . Cheers, -ben -- "Time is of no importance, Mr. President, only life is important." Don't Email: .