Date: Tue, 3 Sep 1996 12:44:30 +0200 (MET DST) From: Luigi Rizzo <luigi@labinfo.iet.unipi.it> To: hackers@freebsd.org Subject: A simulation environment... Message-ID: <199609031044.MAA07164@labinfo.iet.unipi.it>
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For those of you interested in networkin protocols: I am pleased to announce the availability of "dummynet", a simple environment for the evaluation of network protocols on a single system using real traffic generators (e.g. FTP, WWW servers, etc.) and still accounting for limited-size queues, bandwidth limitations and communication delays. Dummynet requires minimal modifications to the OS (300 lines of kernel code, intercepting calls to ip_output() and tcp_input() in the case of a TCP version) and does not interfere with ordinary system activities (I use it on my own workstation). A report and source code for FreeBSD (easily portable to other BSD-derived systems) are available from http://www.iet.unipi.it/~luigi/research.html Feedback and suggestions are appreciated. Luigi ==================================================================== Luigi Rizzo Dip. di Ingegneria dell'Informazione email: luigi@iet.unipi.it Universita' di Pisa tel: +39-50-568533 via Diotisalvi 2, 56126 PISA (Italy) fax: +39-50-568522 http://www.iet.unipi.it/~luigi/ ====================================================================
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