RELEASE_NOTES
author Tom Henderson <tomh@tomh.org>
Mon, 15 Dec 2008 07:25:27 -0800
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		ns-3 RELEASE NOTES
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This file contains ns-3 release notes (most recent releases first).
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All of the ns-3 documentation is accessible from the ns-3 website: 
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http://www.nsnam.org
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including tutorials:
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http://www.nsnam.org/tutorials.html
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Release 3.3 (pending)
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=====================
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Availability
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------------
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This release is immediately available from:
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http://www.nsnam.org/releases/ns-3.3.tar.bz2
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Supported platforms
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-------------------
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ns-3.2 has been tested on the following platforms:
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  - linux x86 gcc 4.2, 4.1, and, 3.4.6.
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  - linux x86_64 gcc 4.3.2, 4.2.3, 4.2.1, 4.1.3, 3.4.6
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  - MacOS X ppc and x86
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  - cygwin gcc 3.4.4 (debug only)
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Not all ns-3 options are available on all platforms; consult the
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wiki for more information:
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http://www.nsnam.org/wiki/index.php/Installation
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New user-visible features
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-------------------------
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  a) Emulated Net Device
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     A new net device has been added as enabling technology for ns-3 emulation
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     scenarios.  See src/devices/emu and examples/emu-udp-echo.cc for details.
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  b) ICMP Support
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     Support for several ICMP messages has been added to ns-3.  See 
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     src/internet-stack/icmpv4.h for details.
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  c) IPv6 Address Support
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     New clases to support IPv6 addresses has been added to the system.  This
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     is enabling technology for fuller IPv6 support scheduled for ns-3.4.
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  d) A flow-id tag has been added to the contributed code section
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  e) Star topologies can be created from the topology helper functions
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  f) The global routing code has been made dynamic (not just limited to
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     (pre-simulation computation) and supports stub network interfaces and 
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     bridge net devices 
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  g) A MatchContainer has been added to the configuration subsystem
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API changes from ns-3.2
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-----------------------
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API changes for this release are documented in the file CHANGES.html
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Known issues
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------------
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ns-3 build is known to fail on the following platforms:
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  - gcc 3.3 and earlier
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  - optimized builds on gcc 3.4.4 and 3.4.5
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  - optimized builds on linux x86 gcc 4.0.x
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  - optimized builds on Ubuntu 8.10 alpha 5 x86 gcc4.3.2
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  - MinGW
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The IPv4 API defined in src/node/ipv4.h is expected to undergo major changes 
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in preparation of the merge of the IPv6 API and implementation.
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Future releases
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---------------
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Our next release, which is expected to happen in 2 to 4 months from now, will
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feature the merging of some of our projects currently in development including
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fuller IPv6 support, and IPv4 and routing protocol refactoring, and some smaller
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features such as an object naming facility and a new Global ARP package.
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Release 3.2
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===========
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Availability
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------------
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This release is immediately available from:
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http://www.nsnam.org/releases/ns-3.2.tar.bz2
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Supported platforms
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-------------------
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ns-3.2 has been tested on the following platforms:
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  - linux x86 gcc 4.2, 4.1, and, 3.4.6.
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  - linux x86_64 gcc 4.3.2, 4.2.3, 4.2.1, 4.1.3, 3.4.6
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  - MacOS X ppc and x86
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  - cygwin gcc 3.4.4 (debug only)
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Not all ns-3 options are available on all platforms; consult the
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wiki for more information:
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http://www.nsnam.org/wiki/index.php/Installation
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New user-visible features
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-------------------------
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  a) Learning bridge (IEEE 802.1D)
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    It is now possible to bridge together multiple layer 2 devices to
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    create larger layer 2 networks. The Wifi and Csma models support
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    this new mode of operation. (contributed by Gustavo Carneiro)
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  b) Python bindings
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    It is now possible to write simulation scripts in python using our 
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    python bindings (contributed by Gustavo Carneiro).
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  c) Real-time simulator
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    It is now possible to run simulations synchronized on the real-world
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    wall-clock time (contributed by Craig Dowell).
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  d) Network Simulation Cradle
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    It is now possible to use the Network Simulation Cradle 
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    (http://www.wand.net.nz/~stj2/nsc/) in ns-3 and run simulations 
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    using various versions of kernel TCP network stacks. (contributed
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    by Florian Westphal as part of his Google Summer of Code work)
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  e) A statistics framework
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    Joseph Kopena contributed a statistics framework which can be used
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    keep track of simulation data in persistent storage across multiple 
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    runs (database and ascii file backends are available).
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    More information on the wiki:
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    http://www.nsnam.org/wiki/index.php/Statistical_Framework_for_Network_Simulation
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API changes from ns-3.1
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-----------------------
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API changes for this release are documented in the file CHANGES.html
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Known issues
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------------
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ns-3 build is known to fail on the following platforms:
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  - gcc 3.3 and earlier
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  - optimized builds on gcc 3.4.4 and 3.4.5
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  - optimized builds on linux x86 gcc 4.0.x
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  - optimized builds on Ubuntu 8.10 alpha 5 x86 gcc4.3.2
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  - MinGW
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The IPv4 API defined in src/node/ipv4.h is expected to undergo major changes 
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in preparation of the merge of the IPv6 API and implementation.
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Future releases
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---------------
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Our next release, which is expected to happen in 2 to 4 months from now, will
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feature the merging of some of our projects currently in development: IPv6, 
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emulation, and synchronous posix sockets.
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Release 3.1 (2008/06/30)
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========================
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The first ns-3 stable release
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-----------------------------
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This release is immediately available from:
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http://www.nsnam.org/releases/ns-3.1.tar.bz2
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We dedicate this initial ns-3 release to our late contributor and friend, 
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Federico Maguolo.
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What is ns-3 ?
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--------------
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ns-3 is a new discrete-event network simulator designed for supporting network
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research and education. ns-3 features a solid, well documented C++ core and 
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models for TCP/IP (IPv4), several link types including WiFi, and mobility 
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models.
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ns-3 is an open source project released under the GNU GPLv2 license which 
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allows anyone to use ns-3 without having to pay any license fee or royalties. 
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ns-3 is actively seeking new contributors to extend the range of supported 
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models and/or to maintain existing models.
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Where to get more information about ns-3
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----------------------------------------
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All the ns-3 documentation, is accessible from the ns-3 website: 
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http://www.nsnam.org
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Including, tutorials:
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http://www.nsnam.org/tutorials.html
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Supported platforms
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-------------------
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ns-3 is regularly tested on the following platforms:
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  - linux x86 gcc 4.2, 4.1, and, 3.4.6.
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  - linux x86_64 gcc 4.1.3, 4.2.1, 3.4.6
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  - MacOS X ppc and x86
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  - cygwin gcc 3.4.4 (debug only)
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Known issues
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------------
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ns-3 is known to fail on the following platforms:
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  - gcc 3.3 and earlier
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  - optimized builds on gcc 3.4.4 and 3.4.5
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  - optimized builds on linux x86 gcc 4.0.x
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The IPv4 API defined in src/node/ipv4.h is expected to undergo major changes 
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in preparation of the merge of the IPv6 API and implementation.
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Future releases
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---------------
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Our next release, which is expected to happen in 2 to 4 months from now, will
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feature the merging of some of our projects currently in development: python 
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scripting, IPv6, emulation, a statistics framework and synchronous posix 
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sockets.
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Release 3.0.13 (2008/06/02)
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===========================
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- point to point links generate ppp pcap traces
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- point to point links support asymmetrical data rates.
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- generate doxygen documentation for all attributes and trace sources
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- add ConfigStore and GtkConfigStore to contrib module
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- socket API now support tx and rx buffers: implemented for UDP and TCP
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- ARP cache now supports per-entry pending queues
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- lots of bugfixes and implementation and API cleanups
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Warning: among API changes in this release, Application::Start and 
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Application::Stop now interprets the time argument as a relative
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instead of absolute simulation time, to align with how Simulator::Schedule
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behaves.  Any code that calls these APIs in the middle of the simulation 
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will need to be adapted.  
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The API of Simulator::StopAt (time) has also changed.  Now it is 
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called Simulator::Stop (time), and takes a relative time, instead of 
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absolute.
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Release 3.0.12 (2008/04/07)
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===========================
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    - Add Attribute support to the TypeId metadata system and add
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attribute support to all in-tree models
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    - Add a mid-level helper API to build simulation topologies 
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and perform simple ascii and pcap link-level tracing.
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    - Large amount of structural changes to accomodate the needs
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of the upcoming python bindings
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    - new rate control algorithm (RRAA) and a jakes propagation model
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in the 802.11 model (Federico Maguolo).
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    - regression test framework added
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    - TCP delayed acknowledgements and multitasking server
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Release 3.0.11 (2008/02/15)
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===========================
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    - Initial port of GTNetS TCP implementation (initial version 
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that does not support multitasking or delayed acknowledgments yet, 
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but supports a reliable stream service)
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    - Changes to the ns-3 object model to create a TypeId-based 
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metadata system
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    - lots of bug fixes throughout the system
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    - tutorial updates
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Release 3.0.10 (2008/01/15)
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===========================
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   - Add tutorial document content;
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   - Valgrind option for "waf" tool;
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   - Doxygen organization changes.
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Release 3.0.9 (2007/12/15)
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==========================
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   - A 802.11 model ported from Yans. This model supports:
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       * a rather extensive PHY model
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       * log-distance and friis propagation model
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       * a simple set of rate control algorithms (ARF, Ideal, 
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         AARF, constant-rate)
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       * adhoc and infrastructure mode (beacon+assoc)
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   - Use smart pointer for Packet in the APIs
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   - A new contrib directory with helper classes: 
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     EventGarbageCollector, Gnuplot
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   - Tracing support for Applications
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   - many bugs fixed
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   - A simple error model
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   - Source files for ns-3 tutorial
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  - OLSR routing protocol
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  - A timer class
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  - Additional mobility models (random waypoint, random 2D walk)
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  - A mobility visualization tool 
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Release 3.0.6 (2007/09/15)
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  - Static multicast IPv4 routing
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  - Logging overhaul (NS_LOG macros)
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  - Refactoring of tracing subsystem
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  - Tutorial document started
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Release 3.0.5 (2007/08/15)
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  - Refactoring to support win32-based unix environments (Cygwin, mingw)
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  - "Packet socket" for allowing applications to access NetDevices directly
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  - Generalized, polymorphic Address class
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  - Add CSMA NetDevice model (from Emmanuelle Laprise)
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  - Modularize IPv4 routing support (from Gustavo Carneiro)
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  - Add mobility framework and basic mobility models 
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  - Global unicast centralized routing 
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Release 3.0.4 (2007/07/15)
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  - Enable waf as the default build system.
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  - Per-packet metadata:  a system to track which headers and trailers 
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    are added to a packet
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  - Simplifications to point-to-point devices and channel
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Release 3.0.3 (2007/06/15)
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  - Enable Waf for release tarballs: users can now build ns-3
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    with the "waf" tool. See doc/build-waf.txt.
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  - Add support for variable time precision: it is now possible
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    to run a simulation with an accuracy which is higher or lower
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    than a nanosecond: seconds, milliseconds, microseconds, 
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    femtoseconds and picoseconds are supported.
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  - Optimize and rework the COM framework, solidify the component 
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    manager
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  - Many small API cleanups
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Release 3.0.2 (2007/05/18)
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==========================
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  - Implement a new memory management infrastructure based
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    on reference counting and smart pointers (the latter being
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    optional)
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  - Implement a COM-like framework with support for QueryInterface
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    to provide object extensibility
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  - Add support for a BSD-style socket API for user applications
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Release 3.0.1 (2007/03/31)
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  - First public release; not yet pre-alpha.
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  - Simple UDP-based simulation script (examples/simple-p2p.cc)