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ns-3 RELEASE NOTES
This file contains ns-3 release notes (most recent releases first).
All of the ns-3 documentation is accessible from the ns-3 website:
http://www.nsnam.org including tutorials: http://www.nsnam.org/tutorials.html
Consult the file CHANGES.html for more detailed information about changed
API and behavior across ns-3 releases.
Release 3.11
===========
Availability
------------
This release is not yet available.
Supported platforms
-------------------
ns-3.11 has been tested on the following platforms. Not all features are
available on all platforms; check the Installation page on the project wiki.
- Linux x86_64 Ubuntu 11.04
- g++-4.5.2
- Linux i686 Ubuntu 11.04
- g++-4.5.2, g++-4.4.5
- Linux x86_64 Fedora Core 15
- g++-4.6.0
- Linux x86_64 Fedora Core 14
- g++-4.5.3, g++-4.4.6, g++-4.3.4
- Linux x86_64 Fedora Core 10
- g++-3.4.6, 4.0.4, 4.1.2, 4.2.4, 4.3.2, 4.4.0
New user-visible features
-------------------------
- The build system has been modularized, and the source code reorganized,
to allow for modular libraries instead of a single monolithic ns-3
library. User programs now link a number of smaller, per-module
libraries depending on the dependencies expressed to the build system.
Source code is now being maintained in individual modules with
consistent directory structures.
- Python bindings have also been modularized, and the bindings are now
generated into a 'ns' namespace instead of 'ns3' for the old
(monolithic) bindings. By default the bindings are now modular, with
a backward compatibility layer for older programs.
- By default, example and test programs are disabled from the build.
Users can enable them via the use of a waf command at configure time,
or automatically through the use of a new .ns3rc file.
- int64x64_t is a new type which allows portable and easy to write arithmetic
calculations that require a high degree of fractional precision.
- An interface to the Click Modular Router and an Ipv4ClickRouting
class has been added, to allow a node to use Click for external routing.
- An interface to an OpenFlow software implementation distribution has
been added to allow the simulation of OpenFlow switches in ns-3.
- ns-3 coding style requirements have been applied to the entire coding
base, resulting in a large number of whitespace changes. The coding
style has been automatically enforced by running a style checking
program (utils/check-style.py) that uses the uncrustify (v. 0.58)
program to apply changes.
- Some documentation reorganization to split documentation between
the ns-3 manual (primarily focusing on the ns-3 core) and a new
"model library" document has been started.
Bugs fixed
----------
The following lists many of the bugs fixed or small feature additions
since ns-3.10, in many cases referencing the Bugzilla bug number.
- bugfix: CsmaNetDevice ErrorModel not discarding packet
- bugfix: do not call RouteOutput() twice
- Workaround gccxml bug scanning Seconds(0) as default value
- Copy a bug fix from ns3modulescan.py into ns3modulescan-modular.py
- Modular Python bindings work (many bug fixes, more modules tested)
- Modular bindings: bug fixes, more verbose scanning
- ./waf --apiscan: fix bug in detection of whether the per-module
- Remove the 'Modules to build' debug print
- CsmaNetDevice ReceiveErrorModel was not dropping the packet
- Several "set but not used" bugs for newer compilers quick-fixed
- bug 445 - Is the class name Scalar in nstime.h appropriate?
- bug 699 - TestCase::DoRun probably should not return a bool
- bug 957 - Issue with test.py
- bug 1017 - node --> internet-stack --> node
- bug 1018 - mobility --> helper --> mobility circular dependency
- bug 1019 - common --> node --> common circular dependency
- bug 1038 - Time::Get*Seconds () return signed integer while actually returning unsigned.
- bug 1040 - Olsr and multiple interfaces
- bug 1042 - AODV RERR implosion (missing RERR_RATELIMIT)
- bug 1044 - Seconds (1e-9) creates Time that is not IsPositive ()
- bug 1047 - Multicast routes on nodes with >16 interfaces
- bug 1048 - suggested MatrixPropagationLossModel::SetLoss() API change
- bug 1049 - Issues with OLSR HNA messages sent by multiple gateways
- bug 1052 - olsr::RoutingProtocol::LinkTupleUpdated incorrect detection of asymetric link with multiple interface nodes
- bug 1054 - ipv6 InternetStackHelper EnablePcapIpv6All() broken
- bug 1056 - CSMA: padding not handled correctly for LLC encapsulation
- bug 1058 - InternetStackHelper pitfall: calling Install before adding routing protocols
- bug 1060 - Setting NqStaWifiMac Active Probing true, crashes simulation
- bug 1061 - Title level inconsistent in click.rst
- bug 1062 - rescale-pdf not working
- bug 1064 - Correct Friis propagation loss equation in spectrum module
- bug 1066 - Set Radiotap modulation type flags correctly
- bug 1069 - ApWifiMac unduly calls RegularWifiMac::Receive and crashes
- bug 1070 - csma/ipv6 examples duplicate NS_LOG_COMPONENT_DEFINE
- bug 1072 - crash upon call to Packet::AddAtEnd of fragmented packets
- bug 1075 - Python examples fail when static built is enabled
- bug 1076 - Waf gives an error if you enable only a single module
- bug 1078 - PacketTagList::Add performs NS_ASSERT counting one byte too few
- bug 1079 - MPI code doesn't compile
- bug 1081 - wutils.py refers to the old directory for visualizer module
- bug 1083 - scratch doesn't work when only some modules are enabled
- bug 1085 - Build failed: list index out of range
- bug 1086 - sanity check for not calling Object::Dispose () twice
- bug 1087 - Call MPI_Finalize to exit MPI environment
- bug 1088 - Code in scratch directory assumes all modules are enabled
- bug 1089 - lwip build issue
- bug 1090 - WifiMacQueue is not accessible through the attribute path
- bug 1092 - Problem building FreeBSD stack with g++ 4.5.2 (Ubuntu)
- bug 1094 - Object::GetObject upon dlopen
- bug 1097 - AODV routing entry set to be VALID mistakenly.
- bug 1098 - when to show users which modules are enabled?
- bug 1101 - Sqlite stats disappeared from configuration file src/wscript
- bug 1103 - Useless assignment in omnet-data-output.cc
- bug 1105 - Move topology helpers into separate per-device modules
- bug 1106 - Remove "CanvasLocation" dependencies in p2p helpers
- bug 1108 - test.py -e option needs repair
- bug 1110 - Sort alphabetically and display "Modules built" in columns
- bug 1117 - bindings failures on selected platforms
- bug 1122 - spectrum-value test should check tolerance on a per-value basis
- bug 1125 - ./waf --enable-modules fails
- bug 1131 - Bug in Ipv4L3Protocol::RemoveAddress()
- bug 1133 - DSDV: Possible bug in settling time calc
- bug 1142 - Wrong 802.11p Slot time
- bug 1146 - help string for test.py with disabled tests
Known issues
------------
In general, known issues are tracked on the project tracker available
at http://www.nsnam.org/bugzilla/
Release 3.10
===========
Availability
------------
This release is available from:
http://www.nsnam.org/releases/ns-allinone-3.10.tar.bz2
Supported platforms
-------------------
ns-3.10 has been tested on the following platforms. Not all features are
available on all platforms; check the Installation page on the project wiki.
- Linux i686 Ubuntu 10.10
- g++-4.4.5
- Linux x86_64 Ubuntu 8.04.4
- g++-3.4.6, g++-4.2.4
- Linux x86_64 Fedora Core 12
- g++-4.4.4
- Linux x86_64 Fedora Core 10
- g++-3.4.6, 4.0.4, 4.1.2, 4.2.4, 4.3.4, 4.4.0
- OS X Snow Leopard
- g++-4.2.1
- OS X powerpc Leopard
- g++-4.0, g++-4.2
New user-visible features
-------------------------
- NS-3 PyViz, a live simulation visualizer, has been added. The
visualizer interacts with a running simulation, such that it uses no
trace files. It can be most useful for debugging purposes, i.e. to
figure out if mobility models are what you expect, where packets are
being dropped, etc. There is also a builtin interactive python console
that can be used to debug the state of the running objects. Although
it is mostly written in Python, it works both with Python and pure C++
simulations.
- Wi-Fi MAC high classes have been reorganised in attempt to
consolidate shared functionality into a single class. This new
class is RegularWifiMac, and it derives from the abstract
WifiMac, and is parent of AdhocWifiMac, StaWifiMac, ApWifiMac,
and MeshWifiInterfaceMac. The QoS and non-QoS class variants are
no longer, with a RegularWifiMac attribute "QosSupported"
allowing selection between these two modes of
operation.
- Support for IEEE 802.11g (specifically, rates with Modulation
Class ERP-OFDM) has been added to the wifi module. The new
WifiModes have names of the form ErpOfdmRatexxMbps, where xx is
the rate in Mbps (one of 6, 9, 12, 18, 24, 36, 48, 54), and a
WifiPhyStandard enumeration WIFI_PHY_STANDARD_80211g has been
added to allow configuration of a Wi-Fi STA supporting ERP-OFDM,
HR/DSSS, and DSSS rates (which some call an "802.11b/g" station).
- Two attributes were added to WaypointMobilityModel. The first
"LazyNotify" (default false), if enabled to true, will suppress
course change notifications if there are no position updates.
The second, "InitialPositionIsWaypoint" (default false), if enabled,
will allow an initial call to SetPosition () (before any waypoints
have been added) to be treated as the first waypoint.
- Regression testing is now completely performed within test.py
rather than a separate "./waf --regression" that consults
reference traces in the ns-3.x-ref-traces directory. In most
cases, the example programs whose traces were included in
ns-3.x-ref-traces have a corresponding test called from the
test.py program. It is still possible to write trace-based
regression tests but they are now called from the test.py
program.
- New BulkSendApplication sends data as fast as possible up to
MaxBytes or unlimited if MaxBytes is zero. Think OnOff, but
without the "off" and without the variable data rate. This
application only works with SOCK_STREAM and SOCK_SEQPACKET
sockets, for example TCP sockets and not UDP sockets.
- Extensions to the energy models: 1) a new Rakhmatov Vrudhula
non-linear battery model, 2) additional support for modeling
energy consumption in WiFi devices, 3) an example for how to add
energy models to a WiFi-based simulation (in examples/energy/
directory).
- New methods to print IPv4 routing tables to an output stream.
- A replacement implementation for TCP for IPv4. TcpSocketBase
now replaces TcpSocketImpl. There are subclasses defined for
TCP Tahoe, Reno, NewReno, and the original RFC793 without
congestion control.
- Energy support for UAN module and Li-Ion energy model.
Now each network node can have an associated energy source
from which it consumes energy. The user can specify a custom
energy model for the underwater transducer, with default values
set for WHOI acoustic transducer. Li-Ion battery model added
into energy models folder.
- Destination-Sequenced Distance Vector (DSDV) routing protocol
is a proactive, table-driven routing protocol for MANETs
developed by Charles E. Perkins and Pravin Bhagwat in 1994.
This implementation is for IPv4 routing and was contributed
by ResilNets Research Group.
- A novel model to simulate LTE networks has been added. It focuses
mainly on modeling the E-UTRA part of the system, with a particular
attention on the aspects related to the channel, PHY and MAC layers.
The most important features available at this moment are (i) a basic
implementation of both the UE and the eNB devices, (ii) RRC and
entities for both the UE and the eNB, (iii) an Adaptive Modulation
and Coding (AMC) scheme for the downlink, (iv) the management of the
data radio bearers (with their QoS parameters), the MAC queues and
the RLC instances, (v) Channel Quality Indicator (CQI) management,
(vi) support for both uplink and downlik packet scheduling,
(vii) a PHY layer model with Resource Block level granularity, and
(viii) a channel model with the outdoor E-UTRAN propagation loss
model.
- Project documentation has been converted from GNU Texinfo to Sphinx.
Bugs fixed
----------
The following lists many of the bugs fixed or small feature additions
since ns-3.9, in many cases referencing the Bugzilla bug number
- bug 824 - TCP should implement FastRecovery by default
- bug 852 - Add support for 802.11g devices
- bug 892 - WaypointMobilityModel incompatible with MobilityHelper::Install
- bug 893 - Lazy CourseChange notification for WaypointMobilityModel
- bug 903 - TapBridge does not shut down properly
- bug 953 - WiMAX channel scanning overflow
- bug 967 - Need to decouple Ipv4L4Protocols from Ipv4L3Protocol
- bug 978 - Consolidate Wi-Fi MAC high functionality
- bug 979 - Multi-octet fields in Wi-Fi headers have wrong endianness
- bug 981 - use a cache to keep track of received MPDUs under block ack
- bug 983 - handle correctly ADDBA response action frames in QadhocWifiMac
- bug 984 - EmuNetDevice should use DIX encapsulation by default
- bug 985 - WiMAX Invalid management message type on wimax-simple
- bug 988 - MacRxMiddle::SequenceControlSmaller method
- bug 990 - Error with an NS_ASSERT at uan-phy-gen.cc
- bug 991 - InterferenceHelper assertion failure
- bug 992 - Unusual (possibly incorrect assertion) in Packet::Deserialize
- bug 993 - MinstrelWifiManager::UpdateStats useless if clause
- bug 994 - PointToPointGridHelper useless if clauses
- bug 995 - Useless (possibly incorrect) comparison of unsigned int
- bug 1004 - module header not rebuilt
- bug 1005 - GetSocket() methods for OnOffApplication and PacketSink
- bug 1009 - decouple m_finSequence (TcpSocketImpl) from tx sequence numbers
- bug 1012 - UAN Throp propagation model bug
- bug 1015 - GetChannelFrequencyMhz() does not match with standard
- bug 1022 - inappropriate ASSERT in tcp-socket-impl.cc
- bug 1025 - wimax-ipv4 script exists with signal SIGSEGV when nbSS>20
- bug 1027 - RocketfuelTopologyReader is not working at all
- bug 1029 - v4Ping application endian issues
- bug 1030 - routing/aodv example fixed
- bug 1031 - Wifi hidden terminal example does not work
- bug 1032 - Unable to specify multiple Compiler/Linker flags
Known issues
------------
In general, known issues are tracked on the project tracker available
at http://www.nsnam.org/bugzilla/
Windows XP 32 bit Cygwin 1.7.7 does not seem to work because of a
problem (reported elsewhere) in linking large libraries.
Release 3.9
===========
Availability
------------
This release is immediately available from:
http://www.nsnam.org/releases/ns-allinone-3.9.tar.bz2
Supported platforms
-------------------
ns-3.9 has been tested on the following platforms:
- Ubuntu 10.04 LTS 32/64-bit gcc-4.4.3
- Fedora Core 12 64-bit gcc-4.4.3
- Ubuntu 9.10 32-bit gcc-4.4.1
- Ubuntu 8.04 LTS 64-bit gcc-4.2.4
- Fedora Core 5 32-bit gcc-4.1.1
- Mac OS X Leopard powerpc gcc-4.0.1
- Windows Cygwin 1.7.5
Not all ns-3 options are available on all platforms; consult the
wiki for more information:
http://www.nsnam.org/wiki/index.php/Installation
New user-visible features
-------------------------
- A reorganisation of the construction of Wi-Fi transmit rates has
been undertaken with the aim of simplifying the task of
supporting further IEEE 802.11 PHYs. This work has been completed
under the auspices of Bug 871. A consequence of this work is that
WifiModes have a new (hopefully future-proof) naming, and
simulations which specify rates by name will need updating. The
list of new rate names is given in the error message produced
when an attempt is made to use any invalid rate name (including
those that were previously valid).
- A new OFDM error rate model for WiFi (NistErrorRateModel); this model
has been validated in clear-channel testbed tests. For 802.11b, it
uses the same underlying model as the YansErrorRateModel, but it differs
from YansErrorRateModel for OFDM modes (802.11a/g). The default
YansWifiPhyHelper has been changed to use this model.
- A new NS-2 mobility trace reader supports BonnMotion, SUMO, TraNS,
etc. traces.
- An energy model for nodes and devices, including an energy source
model and device energy models allowing energy-aware devices
to notify the energy source about energy consumption.
- Rocketfuel topology dataset support for existing topology reader
Rocketfuel project:
http://www.cs.washington.edu/research/networking/rocketfuel/
- Underwater Acoustic Network (UAN) model, split in to three parts, the
channel, PHY, and MAC models to enable researchers to model a variety
of underwater network scenarios.
- the Spectrum framework, which provides support for spectrum-aware
Channel and PHY layer modeling. It features a set of classes that
allows the mathematical representation of frequency dependent
phenomena. Some example channel, propagation and device
implementations that make use of this framework are also
included.
Bugs fixed
----------
The following lists many of the bugs fixed or small feature additions
since ns-3.8, in many cases referencing the Bugzilla bug number
- IPv4 global routing code; stub networks were assumed to be /24
and added as /24 networks even if the mask is actually different
- OLSR was generating messages on non-OLSR interfaces
- ICMPv4 objects not properly registered; affected serialization code
- bug 231 - SocketAddressTag needs to be removed from a packet before
forwarding the packet to the user
- bug 385 - Add a generic "sequence number" class
- bug 473 - [PATCH] Alternative ns-2 trace reader
- bug 665 - Need Tutorial Sectino on Config Path and Tracing Use
- bug 671 - add packet-info-tag.cc for IP_PKTINFO/IPV6_PKTINFO
- bug 702 - Global routing doesn't respond to interface events
- bug 799 - Interference helper is too slow
- bug 800 - Erroneous packet sender while using aloha or cw mac in uan module
- bug 802 - Minstrel algorithm causes segmentation fault
- bug 826 - Using uint64_t instead of Time in DcfManager
- bug 828 - PacketSocket::Close does not unregister protocol handler
- bug 842 - ns-3-dev crashes using block acks
- bug 843 - Most wifi examples change BeaconInterval to unrealistic values
- bug 844 - YansWifiPhy::GetPowerDbm off-by-one problem when calculating Tx
power
- bug 846 - packet.cc triggers deprecated warning
- bug 853 - Rates for Wi-Fi control responses are incorrectly selected
- bug 854 - Support DROP_QUEUE reason-code in Ipv4FlowProbe
- bug 858 - support MSG_PEEK in IPv4/IPv6 raw socket
- bug 861 - Forwarding drops (due to no route found) were not being logged
in IPv4 or IPv6 ascii traces
- bug 869 - suggested test framework enhancements
- bug 871 - naming for WifiPhyStandard
- bug 873 - Queue occupancy counter not decremented in WifiMacQueue::Remove()
- bug 874 - wrong modulation type is selected in the forwardBurst method
- bug 875 - "frame includes FCS" flag should be set in Radiotap frame header
- bug 879 - source address selection for AODV using DeferredRouteRequest
- bug 881 - Reorganise to allow wider use of WifiInformationElement
- bug 890 - several rate adaptation algorithms not tested by test.py
- bug 900: RawTextConfigLoad::Default does not load configurations
- bug 901 - Optimize Mac48Address < != and ==
- bug 902 - TCP: handle out-of-order packets during connection shutdown
- bug 905 - WimaxNetDevice loses packet uid, tags, and memory optimization
- bug 906 - NSC TCP socket fork did not copy txbuffersize over
- bug 908 - test.py should exit if waf dies
- bug 910 - Change Wi-Fi "AccessClass" to something closer to the standard
- bug 911 - IPv4/v6 multicast forwarding not going to all output interfaces
- bug 913 - Queue Enqueue/Drop trace sources behavior unintuitive
- bug 916 - EnableAsciiAll ("prefix") does not work for YansWifiPhyHelper
- bug 918 - samples/main-packet-header.cc is broken
- bug 919 - minstrel does not pass valgrind tests
- bug 921 - Inconsistent declaration of class/struct Object in object.h
- bug 922 - Inconsistent declaration of class/struct in
wifi-remote-station-manager.h
- bug 923 - Inconsistent declaration of class/struct in mac-low.h
- bug 924 - Inconsistent declaration of class/struct in <xxx>-wifi-managers
- bug 925 - Various IPv6 cc files trigger deprecated warning
- bug 926 - olsr handling of multicast packets
- bug 927 - SimpleOfdmWimaxChannel RxPower computation
- bug 930 - examples/topology-read/topology-example-sim.cc uses variable
length array
- bug 931 - Abnormal exit reports SIGSEGV on failure
- bug 932 - Support IP_HDRINCL option for Ipv4RawSocket
- bug 933 - Flushing ostream and files on abnormal program exit
(ASSERT, ABORT and FATAL_ERROR)
- bug 936 - Waf build error for python bindings on "AccessClass"
- bug 937 - bugs in ns-3 wimax
- bug 939 - EmuNetDevice uses too much memory when reading packet bursts
- bug 940 - AODV fails to set up a correct path
- bug 941 - Wifi Dcf attributes not reachable through configuration namespace
- bug 943 - Add a SO_BROADCAST socket option
- bug 944 - change default ErrorRateModel from YansErrorRateModel to
NistErrorRateModel
- bug 946 - Rocketfuel topology dataset support for topology reader
- bug 949 - Node::NonPromiscReceiveFromDevice reports a meaningless
destination address to user callbacks
- bug 950 - PointToPointNetDevice says promisc support is not implemented
but it is
- bug 955 - Install NSC for NS3 in a Itanium Architecture (ia64) with Linux 2.6.16.6
- bug 956 - Bindings failure in core (traced-value) with older gcc
- bug 958 - WiFi uses wrong default values for MTU, FragmentationThreshold
and RtsCtsThreshold
- bug 959 - Simulation never finishes when using RealtimeSimulatorImpl
- bug 960 - V4Ping does not generate checksum
- bug 961 - Problem with MPI activation
- bug 964 - AODV does not work with host addressed interfaces
- bug 965 - Problem building /src/core/callback.cc
- bug 966 - AODV originates new RREQ on each packet, when doesn't have
valid route
- bug 969 - No SocketList is present in UdpL4Protocol class
- bug 971 - fix AODV header Print functions
- bug 972 - [flow monitor] assertion fails in pv4-flow-probe.cc
Known issues
------------
Release 3.8
===========
Availability
------------
This release is immediately available from:
http://www.nsnam.org/releases/ns-allinone-3.8.tar.bz2
Supported platforms
-------------------
ns-3.8 has been tested on the following platforms:
- linux x86 gcc 4.4.0, 4.3.2, 4.2, 4.1.1, 4.1 and 3.4.6 (debug and optimized)
- linux x86_64 gcc 4.4.0, 4.3.2, 4.2.4, 4.2.3, 4.2.1, 4.1.3, 3.4.6 (debug and optimized)
- MacOS X ppc gcc 4.0.x and 4.2.x (debug and optimized)
- cygwin gcc 4.3.4 (debug and optimized)
Not all ns-3 options are available on all platforms; consult the
wiki for more information:
http://www.nsnam.org/wiki/index.php/Installation
New user-visible features
-------------------------
a) WiMAX net device: Allow to simulated IEEE 802.16 point to multi-point based networks
b) Distributed simulation for point-to-point networks using the Message
Passing Interface (MPI) standard.
c) Matrix propagation loss model uses a two-dimensional matrix of path loss indexed
by source and destination nodes.
d) Topology read system: Allows quick and easy creation of large topologies by reading
Inet or Orbis files
e) Gauss-Markov mobility model: Adds 3-d adaptation of Gauss-Markov mobility model which
has both memory and variability
f) Steady-state random waypoint mobility model: Based on random waypoint mobility (RWM) model for case when
speed, pause and position are uniformly distributed random variables. However, initial values of these
parameters are not from uniform distribution but from stationary distribution of RWM model.
g) Two-ray ground propagation loss model: Calculates the crossover distance under which Friis is used.
The antenna height is set to the nodes z coordinate, but can be added to using the model parameter
SetHeightAboveZ, which will affect ALL stations
API changes from ns-3.7
-----------------------
API changes for this release are documented in the file CHANGES.html.
Bugs fixed
----------
The following lists many of the bugs that were fixed since ns-3.7, in
many cases referencing the Bugzilla bug number
- bug 155 - std::ostream & os" parameters not Python friendly
- bug 184 - GtkConfigStore do not support ConfigureDefault
- bug 407 - OLSR is missing HNA support
- bug 414 - No ReceiveErrorModel in SimpleNetDevice
- bug 602 - WifiRemoteStation lacks information about the access class of outgoing packets
- bug 622 - [PATCH] Friendly names for pcap traces
- bug 683 - Helper methods for pcap tracing with explicit filenames
- bug 706 - Backoff counting when starting NS.
- bug 720 - TapBridge creation fails from a script outside the ns3 tree
- bug 731 - Send function in point-to-point-net-device fails to check the return value of the Dequeue function
- bug 747 - Listening TCP socket closes on RST
- bug 748 - Cloned TCP socket uses wrong source address
- bug 772 - AODV is unable to correctly buffer packets waiting for route reply
- bug 777 - AODV ignores specified outgoing interface in RouteOutput()
- bug 778 - OLSR ignores specified outgoing interface in RouteOutput()
- bug 787 - Addition of Two Ray Ground model to propagation loss model and tests
- bug 788 - OLSR_NEIGH_HOLD_TIME should be 3 times OLSR_REFRESH_INTERVAL
- bug 789 - [PATCH] Globalrouting externalroutes to use the new GetRootExitDirections()
- bug 794 - Ipv4Mask constructor for "/yy"-notation is wrong
- bug 796 - TCP bug in ns-3-dev branch : Crash detected during retesting of Chord on ns-3-dev branch
- bug 797 - Enhancements to src/core/random-variable.cc/h
- bug 801 - ns-3.7 and SVN not coexisting nicely
- bug 802 - Minstrel algorithm causes segmentation fault
- bug 804 - null-pointer references in 3.7 internet stack
- bug 806 - TCP doesn't work over a CSMA link
- bug 807 - ns2-mobility-helper.cc: node id parsed wrong
- bug 809 - Missing Python binding for Ipv4GlobalRouting::GetRoute
- bug 810 - In TCP, Socket::GetSockName() does not return the local socket address
- bug 812 - Assert when getting socket in RecvReply for AODV
- bug 813 - Nqos AP sends packet to non associated STA
- bug 814 - Function logging causing assert in wireless examples
- bug 815 - waf shell file descriptor leak
- bug 816 - tap-creator deadlock when python bindings enabled
- bug 817 - Pareto rng constructors using scale and shape instead of mean and shape
- bug 818 - TCP Socket implementation does not set ACK flag on retransmits
- bug 819 - Build break when gtk not installed
- bug 820 - Bad things happen in test.py when logging is enabled
- bug 821 - AODV asserts with function logging enabled
- bug 822 - Move Mtu attribute from NetDevice base class to subclasses
- bug 825 - UDP-Client-server's packet loss counter not properly reset
- bug 828 - PacketSocket::Close does not unregister protocol handler
- bug 829 - TCP unbound memory problem (pending data)
- bug 833 - OnOffApplication with PacketSocket: sniffs all traffic
- bug 834 - Incorrect signature of Ipv4FlowProbe::DropLogger
- bug 835 - Unlimited receive queues in sockets == evil
- bug 836 - Delay is incremented over time with BsUplinkSchedulerSimple and BsUplinkSchedulerRtps
- bug 838 - ns-3 can't compile on MacOS with 32bit processor
- bug 839 - TestSuite wimax-ss-mac-layer crashes on Darwin 9.8.0 Power Macintosh
- bug 840 - BS scheduler does not support fragmentation for UGS flows
- bug 841 - Multicast transmission breaks with QoS Wifi
- bug 844 - YansWifiPhy::GetPowerDbm off-by-one problem when calculating Tx power
- bug 847 - Segfaults on BaseStationNetDevice with OnOffApplication and rtPS sched
- bug 849 - stray patch files in lwip directory
- bug 850 - Ipv4GlobalRouting::LookupGlobal bug
- bug 855 - waf dies badly when switching from debug to optimized build or vice versa
- bug 856 - initialize vbl
- bug 857 - Link-Local Multicast handle in Ipv4 Output processing
- bug 859 - Output interface estimation for the source address bound socket in IPv4 Raw socket
- bug 860 - waf sometimes dies while executing ns3header or gen_ns3_module_header tasks in case of
parallel jobs
- bug 862 - NotifyInterfaceUp() Adds network route even when netmask is /32
- bug 863 - Wrong Scalar arithmetics
- bug 864 - Invalid return value in UdpSocketImpl::Send and Ipv4RawSocketImpl::Send
- bug 865 - Ipv4RawSocketImpl::RecvFrom does not return from address all the time.
- bug 866 - WiMAX mobility models not aggregated to Node
- bug 867 - Minor bug in Ipv4L3Protocol::Send()
- bug 868 - invalid packet size after Ipv4L3Protocol::Send
- bug 872 - ns3::PcapFileWrapper::Write explodes stack
- bug 873 - Queue occupancy counter not decremented in WifiMacQueue::Remove()
- bug 876 - Tcp socket does not handle ShutdownRecv correctly
- bug 877 - python bindings broken with multiple inheritance ?
- bug 880 - Node sending a packet to itself via 127.0.0.1 aborts
- bug 885 - Error in Ascii tracing in Python examples
- bug 888 - Writing ascii trace to addtional tests fails
- bug 891 - WiMAX device helper does not include propagation loss model by default
- bug 894 - ./waf --run error message upon segfault
- bug 895 - SimpleOfdmWimaxPhy SNR computation
- bug 899 - EmuNetDevice::SetPromiscReceiveCallback not implemented
Known issues
------------
ns-3 builds have been known to fail on the following platforms:
- gcc 3.3 and earlier
- optimized builds on gcc 3.4.4 and 3.4.5
- optimized builds on linux x86 gcc 4.0.x
Release 3.7
===========
Availability
------------
This release is immediately available from:
http://www.nsnam.org/releases/ns-allinone-3.7.tar.bz2
Supported platforms
-------------------
ns-3.7 has been tested on the following platforms:
- linux x86 gcc 4.4.0, 4.3.2, 4.2, 4.1.1, 4.1 and 3.4.6 (debug and optimized)
- linux x86_64 gcc 4.4.0, 4.3.2, 4.2.4, 4.2.3, 4.2.1, 4.1.3, 3.4.6 (debug and optimized)
- MacOS X ppc gcc 4.0.x and 4.2.x (debug and optimized)
- cygwin gcc 3.4.4 (debug only), gcc 4.3.2 (debug and optimized)
Unofficially supported platform
-------------------
- mingw gcc 3.4.5 (debug only)
Not all ns-3 options are available on all platforms; consult the
wiki for more information:
http://www.nsnam.org/wiki/index.php/Installation
New user-visible features
-------------------------
a) Ad hoc On-Demand Distance Vector (AODV) routing model (RFC 3561)
b) IPv6 extensions support to add IPv6 extensions and options. Two
examples (fragmentation and loose routing) are available.
c) NetAnim interface: Provides an interface to the Qt-based NetAnim
animator, which supports static, point-to-point topology-based
packet animations.
d) New topology helpers have been introduced
- PointToPointDumbbellHelper
- PointToPointGridHelper
- PointToPointStarHelper
- CsmaStarHelper
e) Equal-cost multipath for global routing: Enables quagga's equal
cost multipath for Ipv4GlobalRouting, and adds an attribute that
can enable it with random packet distribution policy across
equal cost routes.
f) Binding sockets to devices: A method analogous to a SO_BINDTODEVICE
socket option has been introduced to class Socket
g) Object::DoStart: Users who need to complete their object setup at
the start of a simulation can override this virtual method, perform their
adhoc setup, and then, must chain up to their parent.
h) Ipv4::IsDestinationAddress method added to support checks of whether a
destination address should be accepted as one of the host's own
addresses.
i) UniformDiscPositionAllocator added; distributes uniformly the nodes
within a disc of given radius.
j) ChannelNumber attribute added to YansWifiPhy. Now it is possible to
setup wifi channel using WifiPhyHelper::Set() method.
k) WaypointMobilityModel provides a method to add mobility as a set of
(time, position) pairs
l) 802.11p WiFi standards
m) UDP Client/Server application
n) Support transactions in the SQLite output interface, making it usable for larger amounts of data
API changes from ns-3.6
-----------------------
API changes for this release are documented in the file CHANGES.html.
Bugs fixed
----------
The following lists many of the bugs that were fixed since ns-3.6, in
many cases referencing the Bugzilla bug number
- bug 752: Object::DoStart is not executed for objects created at t > 0
- bug 767: Incorrect modulation for 802.11a modes
- bug 725: wifi fragmentation and RTS cannot be used at the same time
- bug 782: CreateTap () requires IP address in modes other than
CONFIGURE_LOCAL.
- bug 769: Queue::GetTotalReceived{Bytes,Packets}() broken
- bug 738 ReceiveErrorModel called too late
- Fix NSC improper response to FIN
- Fixed bug in serialization of PbbAddressBlock.
- Fix bug 780 (problem in RoutingTableComputation with asymetric links),
while adding debugging methods to OLSR.
- bug 759: Ipv6 uses wrong outgoing interface.
- bug 770: IPv6 size calculation for unknown options is wrong.
- bug 771: Radvd does not set ttl value.
- Fix bug 606: Arp depends on IP routing system
- pad out CSMA payloads to 46 bytes if needed
- Drop CSMA packets with CRC errors, rescan, dox tweaks
- Add FCS capability to CSMA
- Mesh:Dot11s: fixed airtime metric
- Get emu working again: Add Dix/Llc option, add and use contextual
realtime schedule ops, don't refcount realtime simulator impl
- bug 695 - DcfManager::UpdateBackoff () uses slow HighPrecision::Div()
- bug 674 - EIFS is not handled correctly in DcfManager::GetAccessGrantStart
- bug 739 - OLSR: Strange HTime value in HELLO messages
- bug 746 - UDP source address is not set to bound address
- bug 735 Update Olsr for local delivery
- bug 740 OLSR MprCompute () works wrong: fixed
- bug 729 Enable IPv6 over PPP.
- bug 645: fixes for opening stats file with OMNeT++
- bug 689: default energy detection and CCA thresholds are changed to be
more realistic.
- bug 733: OLSR MPR Computation give incorrect result
- Mesh: HWMP: fixed proactive routes
- Mesh: fixed FLAME PATH_UPDATE procedure, fixed mesh.cc
Known issues
------------
ns-3 builds have been known to fail on the following platforms:
- gcc 3.3 and earlier
- optimized builds on gcc 3.4.4 and 3.4.5
- optimized builds on linux x86 gcc 4.0.x
Release 3.6
===========
Availability
------------
This release is immediately available from:
http://www.nsnam.org/releases/ns-allinone-3.6.tar.bz2
Supported platforms
-------------------
ns-3.6 has been tested on the following platforms:
- linux x86 gcc 4.4.1, 4.2, 4.1, and, 3.4.6.
- linux x86_64 gcc 4.4.0, 4.3.2, 4.2.3, 4.2.1, 4.1.3, 3.4.6
- MacOS X ppc and x86 (gcc 4.0.x and 4.2.x)
- cygwin gcc 3.4.4 (debug only), gcc 4.3.2 (debug and optimized)
Not all ns-3 options are available on all platforms; consult the
wiki for more information:
http://www.nsnam.org/wiki/index.php/Installation
New user-visible features
-------------------------
a) 802.11 models:
- Add an implementation of the minstrel rate control algorithm
(Duy Nguyen for gsoc)
- AthstatsHelper: enables the wifi device to produce periodic
reports similar to the ones generated by madwifi's
athstats tool (Nicola Baldo)
- 10MHz and 5MHz channel width supported by 802.11a model
(Ramon Bauza and Kirill Andreev)
- Channel switching support. YansWifiPhy can now switch among
different channels (Ramon Bauza and Pavel Boyko)
b) IPv6 models:
- IPv6 interface;
- IPv6 layer;
- IPv6 raw socket;
- Static IPv6 routing;
- ICMPv6 layer;
- Some ICMPv6 error messages (destination unreachable, ...);
- Neighbor Discovery Protocol (NS/NA, RS/RA, redirection);
- Ping6 application (send Echo request);
- Radvd application (send RA);
- Examples (ping6, simple-routing-ping6, radvd, radvd-two-prefix,
icmpv6-redirect).
c) Wireless Mesh Networking models:
- General multi-interface mesh stack infrastructure (devices/mesh module).
- IEEE 802.11s (Draft 3.0) model including Peering Management Protocol and HWMP.
- Forwarding Layer for Meshing (FLAME) protocol.
d) Nix-vector routing:
- Ipv4NixVectorHelper
- Examples (nix-simple, nms-p2p-nix)
e) New Test Framework
- Use test.py instead of ./waf check or ./waf --regression
- Previous unit tests have been ported to new framework.
- Examples are tested for run-ability.
f) A new Flow Monitor module
- To very easily measure flow metrics in a simulation
- No need to use trace callbacks or parsing trace files
API changes from ns-3.5
-----------------------
API changes for this release are documented in the file CHANGES.html.
Known issues
------------
ns-3.6 build is known to fail on the following platforms:
- gcc 3.3 and earlier
- optimized builds on gcc 3.4.4 and 3.4.5
- optimized builds on linux x86 gcc 4.0.x
Release 3.5
===========
Availability
------------
This release is immediately available from:
http://www.nsnam.org/releases/ns-allinone-3.5.tar.bz2
Supported platforms
-------------------
ns-3.5 has been tested on the following platforms:
- linux x86 gcc 4.2, 4.1, and, 3.4.6.
- linux x86_64 gcc 4.4.0, 4.3.2, 4.2.3, 4.2.1, 4.1.3, 3.4.6
- MacOS X ppc and x86 (gcc 4.0.x and 4.2.x)
- cygwin gcc 3.4.4 (debug only), gcc 4.3.2 (debug and optimized)
- mingw gcc 3.4.5 (debug only)
Not all ns-3 options are available on all platforms; consult the
wiki for more information:
http://www.nsnam.org/wiki/index.php/Installation
New user-visible features
-------------------------
a) 802.11 MAC:
- EDCA multi-qos-class support (Mirko Banchi)
- 802.11n initial support for A-MSDU frame aggregation (Mirko Banchi)
- aarf-cd and cara rate control algorithms (Federico Maguolo)
b) 802.11 PHY:
- 802.11b PHY support (Gary Pei)
- Nakagami propagation loss model (Timo Bingmann)
- radiotap and prism headers for PCAP output (Nicola Baldo)
c) RandomVariable:
- GammaVariable and ErlangVariable (Timo Bingmann)
- ZipfVariable (Francesco Malandrino)
d) UdpEcho: allows setting the payload of echo packets
e) Ipv4/Ipv4RoutingProtocol: allow fine-grained control over
routing policy and arbitrary composition of routing protocols
API changes from ns-3.4
-----------------------
API changes for this release are documented in the file CHANGES.html. The
internal API and composition of the IPv4 stack underwent significant
refactoring in this release cycle.
Known issues
------------
ns-3 build is known to fail on the following platforms:
- gcc 3.3 and earlier
- optimized builds on gcc 3.4.4 and 3.4.5
- optimized builds on linux x86 gcc 4.0.x
Future releases
---------------
Our next release, which is expected to happen in 2 to 4 months from now, will
feature the merging of some of our projects currently in development including
fuller IPv6 support, some smaller features such as a new Global ARP
package, and possibly a new Testing and Validation suite.
Release 3.4
===========
Availability
------------
This release is immediately available from:
http://www.nsnam.org/releases/ns-allinone-3.4.tar.bz2
Supported platforms
-------------------
ns-3.4 has been tested on the following platforms:
- linux x86 gcc 4.2, 4.1, and, 3.4.6.
- linux x86_64 gcc 4.3.2, 4.2.3, 4.2.1, 4.1.3, 3.4.6
- MacOS X ppc and x86
- cygwin gcc 3.4.4 (debug only)
Not all ns-3 options are available on all platforms; consult the
wiki for more information:
http://www.nsnam.org/wiki/index.php/Installation
New user-visible features
-------------------------
a) Wifi models: Timo Bingman contributed a ThreeLogDistance and a Nakagami
propagation loss model based on the ns-2 models. Fabian Mauchle contributed
multicast support.
b) Object Name Service: A facility allowing ns-3 Objects to be assigned
names has been added.
c) Tap Bridge: A second option for integrating ns-3 with real-world hosts
has been added. This allows for real hosts to talk over ns-3 net devices
and simulated networks.
d) A new build option (ns-3-allinone) has been provided to make it easier for
users to download and bulid commonly used ns-3 configurations.
e) The ns-3 calendar queue scheduler has been ported to ns-3.
f) XML support has been added to the ConfigStore.
API changes from ns-3.3
-----------------------
API changes for this release are documented in the file CHANGES.html
Known issues
------------
ns-3 build is known to fail on the following platforms:
- gcc 3.3 and earlier
- optimized builds on gcc 3.4.4 and 3.4.5
- optimized builds on linux x86 gcc 4.0.x
- optimized builds on Ubuntu 8.10 alpha 5 x86 gcc4.3.2
- MinGW
The IPv4 API defined in src/node/ipv4.h is expected to undergo major changes
in preparation of the merge of the IPv6 API and implementation.
Future releases
---------------
Our next release, which is expected to happen in 2 to 4 months from now, will
feature the merging of some of our projects currently in development including
fuller IPv6 support, and IPv4 and routing protocol refactoring, and some smaller
features such as a new Global ARP package and possibly a new Testing and Validation
suite,
Release 3.3
===========
Availability
------------
This release is immediately available from:
http://www.nsnam.org/releases/ns-3.3.tar.bz2
Supported platforms
-------------------
ns-3.3 has been tested on the following platforms:
- linux x86 gcc 4.2, 4.1, and, 3.4.6.
- linux x86_64 gcc 4.3.2, 4.2.3, 4.2.1, 4.1.3, 3.4.6
- MacOS X ppc and x86
- cygwin gcc 3.4.4 (debug only)
Not all ns-3 options are available on all platforms; consult the
wiki for more information:
http://www.nsnam.org/wiki/index.php/Installation
New user-visible features
-------------------------
a) Emulated Net Device
A new net device has been added as enabling technology for ns-3 emulation
scenarios. See src/devices/emu and examples/emu-udp-echo.cc for details.
b) ICMP Support
Support for several ICMP messages has been added to ns-3. See
src/internet-stack/icmpv4.h for details.
c) IPv6 Address Support
New clases to support IPv6 addresses has been added to the system. This
is enabling technology for fuller IPv6 support scheduled for ns-3.4.
d) A flow-id tag has been added to the contributed code section
e) Star topologies can be created from the topology helper functions
f) The global routing code has been made dynamic (not just limited to
(pre-simulation computation) and supports stub network interfaces and
bridge net devices
g) A MatchContainer has been added to the configuration subsystem
API changes from ns-3.2
-----------------------
API changes for this release are documented in the file CHANGES.html
Known issues
------------
ns-3 build is known to fail on the following platforms:
- gcc 3.3 and earlier
- optimized builds on gcc 3.4.4 and 3.4.5
- optimized builds on linux x86 gcc 4.0.x
- optimized builds on Ubuntu 8.10 alpha 5 x86 gcc4.3.2
- MinGW
The IPv4 API defined in src/node/ipv4.h is expected to undergo major changes
in preparation of the merge of the IPv6 API and implementation.
Future releases
---------------
Our next release, which is expected to happen in 2 to 4 months from now, will
feature the merging of some of our projects currently in development including
fuller IPv6 support, and IPv4 and routing protocol refactoring, and some smaller
features such as an object naming facility and a new Global ARP package.
Release 3.2
===========
Availability
------------
This release is immediately available from:
http://www.nsnam.org/releases/ns-3.2.tar.bz2
Supported platforms
-------------------
ns-3.2 has been tested on the following platforms:
- linux x86 gcc 4.2, 4.1, and, 3.4.6.
- linux x86_64 gcc 4.3.2, 4.2.3, 4.2.1, 4.1.3, 3.4.6
- MacOS X ppc and x86
- cygwin gcc 3.4.4 (debug only)
Not all ns-3 options are available on all platforms; consult the
wiki for more information:
http://www.nsnam.org/wiki/index.php/Installation
New user-visible features
-------------------------
a) Learning bridge (IEEE 802.1D)
It is now possible to bridge together multiple layer 2 devices to
create larger layer 2 networks. The Wifi and Csma models support
this new mode of operation. (contributed by Gustavo Carneiro)
b) Python bindings
It is now possible to write simulation scripts in python using our
python bindings (contributed by Gustavo Carneiro).
c) Real-time simulator
It is now possible to run simulations synchronized on the real-world
wall-clock time (contributed by Craig Dowell).
d) Network Simulation Cradle
It is now possible to use the Network Simulation Cradle
(http://www.wand.net.nz/~stj2/nsc/) in ns-3 and run simulations
using various versions of kernel TCP network stacks. (contributed
by Florian Westphal as part of his Google Summer of Code work)
e) A statistics framework
Joseph Kopena contributed a statistics framework which can be used
keep track of simulation data in persistent storage across multiple
runs (database and ascii file backends are available).
More information on the wiki:
http://www.nsnam.org/wiki/index.php/Statistical_Framework_for_Network_Simulation
API changes from ns-3.1
-----------------------
API changes for this release are documented in the file CHANGES.html
Known issues
------------
ns-3 build is known to fail on the following platforms:
- gcc 3.3 and earlier
- optimized builds on gcc 3.4.4 and 3.4.5
- optimized builds on linux x86 gcc 4.0.x
- optimized builds on Ubuntu 8.10 alpha 5 x86 gcc4.3.2
- MinGW
The IPv4 API defined in src/node/ipv4.h is expected to undergo major changes
in preparation of the merge of the IPv6 API and implementation.
Future releases
---------------
Our next release, which is expected to happen in 2 to 4 months from now, will
feature the merging of some of our projects currently in development: IPv6,
emulation, and synchronous posix sockets.
Release 3.1 (2008/06/30)
========================
The first ns-3 stable release
-----------------------------
This release is immediately available from:
http://www.nsnam.org/releases/ns-3.1.tar.bz2
We dedicate this initial ns-3 release to our late contributor and friend,
Federico Maguolo.
What is ns-3 ?
--------------
ns-3 is a new discrete-event network simulator designed for supporting network
research and education. ns-3 features a solid, well documented C++ core and
models for TCP/IP (IPv4), several link types including WiFi, and mobility
models.
ns-3 is an open source project released under the GNU GPLv2 license which
allows anyone to use ns-3 without having to pay any license fee or royalties.
ns-3 is actively seeking new contributors to extend the range of supported
models and/or to maintain existing models.
Where to get more information about ns-3
----------------------------------------
All the ns-3 documentation, is accessible from the ns-3 website:
http://www.nsnam.org
Including, tutorials:
http://www.nsnam.org/tutorials.html
Supported platforms
-------------------
ns-3 is regularly tested on the following platforms:
- linux x86 gcc 4.2, 4.1, and, 3.4.6.
- linux x86_64 gcc 4.1.3, 4.2.1, 3.4.6
- MacOS X ppc and x86
- cygwin gcc 3.4.4 (debug only)
Known issues
------------
ns-3 is known to fail on the following platforms:
- gcc 3.3 and earlier
- optimized builds on gcc 3.4.4 and 3.4.5
- optimized builds on linux x86 gcc 4.0.x
The IPv4 API defined in src/node/ipv4.h is expected to undergo major changes
in preparation of the merge of the IPv6 API and implementation.
Future releases
---------------
Our next release, which is expected to happen in 2 to 4 months from now, will
feature the merging of some of our projects currently in development: python
scripting, IPv6, emulation, a statistics framework and synchronous posix
sockets.
Release 3.0.13 (2008/06/02)
===========================
- point to point links generate ppp pcap traces
- point to point links support asymmetrical data rates.
- generate doxygen documentation for all attributes and trace sources
- add ConfigStore and GtkConfigStore to contrib module
- socket API now support tx and rx buffers: implemented for UDP and TCP
- ARP cache now supports per-entry pending queues
- lots of bugfixes and implementation and API cleanups
Warning: among API changes in this release, Application::Start and
Application::Stop now interprets the time argument as a relative
instead of absolute simulation time, to align with how Simulator::Schedule
behaves. Any code that calls these APIs in the middle of the simulation
will need to be adapted.
The API of Simulator::StopAt (time) has also changed. Now it is
called Simulator::Stop (time), and takes a relative time, instead of
absolute.
Release 3.0.12 (2008/04/07)
===========================
- Add Attribute support to the TypeId metadata system and add
attribute support to all in-tree models
- Add a mid-level helper API to build simulation topologies
and perform simple ascii and pcap link-level tracing.
- Large amount of structural changes to accomodate the needs
of the upcoming python bindings
- new rate control algorithm (RRAA) and a jakes propagation model
in the 802.11 model (Federico Maguolo).
- regression test framework added
- TCP delayed acknowledgements and multitasking server
Release 3.0.11 (2008/02/15)
===========================
- Initial port of GTNetS TCP implementation (initial version
that does not support multitasking or delayed acknowledgments yet,
but supports a reliable stream service)
- Changes to the ns-3 object model to create a TypeId-based
metadata system
- lots of bug fixes throughout the system
- tutorial updates
Release 3.0.10 (2008/01/15)
===========================
- Add tutorial document content;
- Valgrind option for "waf" tool;
- Doxygen organization changes.
Release 3.0.9 (2007/12/15)
==========================
- A 802.11 model ported from Yans. This model supports:
* a rather extensive PHY model
* log-distance and friis propagation model
* a simple set of rate control algorithms (ARF, Ideal,
AARF, constant-rate)
* adhoc and infrastructure mode (beacon+assoc)
- Use smart pointer for Packet in the APIs
- A new contrib directory with helper classes:
EventGarbageCollector, Gnuplot
- Tracing support for Applications
- many bugs fixed
Release 3.0.8 (2007/11/15)
==========================
- A simple error model
- Source files for ns-3 tutorial
Release 3.0.7 (2007/10/15)
==========================
- OLSR routing protocol
- A timer class
- Additional mobility models (random waypoint, random 2D walk)
- A mobility visualization tool
Release 3.0.6 (2007/09/15)
==========================
- Static multicast IPv4 routing
- Logging overhaul (NS_LOG macros)
- Refactoring of tracing subsystem
- Tutorial document started
Release 3.0.5 (2007/08/15)
==========================
- Refactoring to support win32-based unix environments (Cygwin, mingw)
- "Packet socket" for allowing applications to access NetDevices directly
- Generalized, polymorphic Address class
- Add CSMA NetDevice model (from Emmanuelle Laprise)
- Modularize IPv4 routing support (from Gustavo Carneiro)
- Add mobility framework and basic mobility models
- Global unicast centralized routing
Release 3.0.4 (2007/07/15)
==========================
- Enable waf as the default build system.
- Per-packet metadata: a system to track which headers and trailers
are added to a packet
- Simplifications to point-to-point devices and channel
Release 3.0.3 (2007/06/15)
==========================
- Enable Waf for release tarballs: users can now build ns-3
with the "waf" tool. See doc/build-waf.txt.
- Add support for variable time precision: it is now possible
to run a simulation with an accuracy which is higher or lower
than a nanosecond: seconds, milliseconds, microseconds,
femtoseconds and picoseconds are supported.
- Optimize and rework the COM framework, solidify the component
manager
- Many small API cleanups
Release 3.0.2 (2007/05/18)
==========================
- Implement a new memory management infrastructure based
on reference counting and smart pointers (the latter being
optional)
- Implement a COM-like framework with support for QueryInterface
to provide object extensibility
- Add support for a BSD-style socket API for user applications
Release 3.0.1 (2007/03/31)
==========================
- First public release; not yet pre-alpha.
- Simple UDP-based simulation script (examples/simple-p2p.cc)
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