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Welcome to Netkit version 2.8. WHAT IS NETKIT -------------- Netkit is a self-contained environment that makes it easy and costless to emulate complex network configurations on a single host machine. The idea underlying Netkit is that each network device is implemented by a virtual machine running the appropriate software. Virtual machines can then be interconnected as desired by configuring virtual collision domains. Interconnected machines may be organized to form a laboratory (lab), which can be used to emulate the behavior of a particular service or protocol (e.g., DNS). The configuration of the lab can be saved to ease its distribution and replication. Netkit, in itself, is an open source project aiming at integrating different other open source products. See the THANKS section for a brief list of the software resources integrated into Netkit. The project was born (and is still carried on) with the main purpose of supporting teaching of networking subjects with realistic experiences. SYSTEM REQUIREMENTS ------------------- Netkit virtual machines can be configured in a flexible way, so that you can decide how many system resources on the host machine should be allocated to them. System requirements are not very strict. Netkit can run on a personal computer with: - An i386/amd64 architecture (read: Pentiums and AMDs are fine). For best performance, CPU frequency should be above 600MHz. Netkit works fine also on slower systems, but this may impact usability. If your host runs a 64-bit OS, you may need to install 32-bit compatibility libraries (most notably, libc6-i386 and ia32-libs). - At least 256MB of RAM (this mainly depends on the requirements of the Linux installation you are using: Netkit virtual machines may consume slightly more than 32MB each). - At least 1GB of free hard disk space (this is required to install the virtual machines filesystem that is distributed with Netkit); even if not explicitly required, it is *strongly* recommended that Netkit is installed on an ext2/ext3 partition. Not doing so is likely to result in performance losses and/or malfunctions. - A Linux operating system installation running a 2.6 kernel (2.4 kernels may still be supported though); the installation should be capable of running a graphical session (read: should include a configured X server); this is not strictly required, but it eases running multiple virtual machines a lot. Due to the particular nature of the User Mode Linux kernel (which Netkit is based on), Netkit cannot be natively run on operating systems which are different from Linux. DOCUMENTATION ------------- Netkit documentation is available in two separate forms: the Netkit environment is fully described by man pages (you can start your reading from 'man netkit'), while some other documentation and the description of the labs are provided as slides. Standard Netkit documentation is included in the Netkit package itself. Additional documentation can be downloaded from http://www.netkit.org/. BUG REPORTING ------------- Being an integration of different software products, Netkit is a somewhat complex product. We are doing our best to make it be a stable, fast, solid and reliable product. However, due to the complex interactions between the various components, misbehaviors or malfunctions may occur in the presence of particular configurations. We put our effort in trying to fix these bugs as fast as possible (remember that this is not the only activity in our lives ;) ). In turn, we expect users to signal them so that we can improve the quality of Netkit as time goes on. Please make sure you have carefully read the documentation (including man pages and FAQs, if available) before submitting a bug report. Instructions for doing this are provided in the man pages. Bug reports should be sent to <firstname.lastname@example.org> or submitted for public discussion to <email@example.com>. CREDITS AND CONTACTS -------------------- This distribution has been released by the Computer Networks (CompuNet) Research Group at the University of Roma Tre (http://www.dia.uniroma3.it). People involved in the project include (but are not limited to): Giuseppe Di Battista Maurizio Patrignani Stefano Pettini Maurizio Pizzonia Fabio Ricci Massimo Rimondini The project has been carried on in the past with significant contributions from the Linux User Group "LUG Roma Tre" (http://www.lugroma3.org). Apart from people from CompuNet and from the LUG, another special mention is due for contributions provided by Andrea Cecchetti, Lorenzo Colitti, Federico Mariani, and Flavia Picard. The current official Netkit site is http://www.netkit.org/. Here you can find the Netkit distribution itself and also some additional resources (e.g., some labs). Contact information is provided as well. You can reach the Netkit team by writing to <firstname.lastname@example.org> or by subscribing to the mailing list <email@example.com>. THANKS ------ Netkit is a software integration project. Hence, we would like to thank at least the following people for having made all this possible: - Linus Torvalds for Linux - All the people working on the Linux kernel - James R. Leu and Ramon Casellas for their work on MPLS routing - Jeff Dike, Paolo Giarrusso, and the other contributors for User Mode Linux specific resources - Kunihiro Ishiguro, Paul Jakma, and the other developers for the Zebra/Quagga routing daemon - Lennert Buytenhenk and the other people working on bridge sources and utilities at http://bridge.sourceforge.net - many many others...