From owner-freebsd-hackers Fri Jun 28 09:10:39 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id JAA10420 for hackers-outgoing; Fri, 28 Jun 1996 09:10:39 -0700 (PDT) Received: from etinc.com (etinc.com [204.141.244.98]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id JAA10414 for ; Fri, 28 Jun 1996 09:10:36 -0700 (PDT) Received: from dialup-usr11.etinc.com (dialup-usr11.etinc.com [204.141.95.132]) by etinc.com (8.6.12/8.6.9) with SMTP id MAA24888; Fri, 28 Jun 1996 12:19:14 -0400 Date: Fri, 28 Jun 1996 12:19:14 -0400 Message-Id: <199606281619.MAA24888@etinc.com> X-Sender: dennis@etinc.com X-Mailer: Windows Eudora Version 2.0.3 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: Mark Tinguely From: dennis@etinc.com (Dennis) Subject: Re: Frame relay and ATM support: virtual interface per vpi? Cc: hackers@freebsd.org Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk >I was proposing a "atmdump" to a student interested in doing something >in the network tool area. Since ATM adapters' SAR reconstitutes AAL >packets (and a person couldn't keep up with the construction of >AAL packets from cell in software) that they leave and report the >PDUs with the recieved summary header (and trailer if appropriate). > >In this way, a person can save raw packets, display header, or control >information just like "tcpdump". I would prefer to treat all the virtual >circuits as one interface to have the ability to display everything >and use command line filters to restrict the view just like "tcpdump". Its nice to have an option at the hardware level to do filters on a per connection basis. On a fast ATM link, you could be passing up a ton of data for user-level filtering. We just added per DLCI debugging because its just unworkable to filter everything at T1 speeds. Dennis > >--mark. > > ---------------------------------------------------------------------------- Emerging Technologies, Inc. http://www.etinc.com Synchronous Communications Cards and Routers For Discriminating Tastes. 56k to T1 and beyond. Frame Relay, PPP, HDLC, and X.25 for BSD/OS, FreeBSD and LINUX