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RELEASE_NOTES
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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-dev
=============
Availability
------------
This release is not yet available.
Supported platforms
-------------------
This release is intended to work on systems with the following minimal
requirements (Note: not all features available on all platforms):
This release has been tested on the following platforms:
New user-visible features
-------------------------
- (buildings) A new position allocator has been added to the buildings module.
The allocator places nodes randomly but in a manner that rejects positions
that are located within buildings defined in the scenario.
Bugs fixed
----------
- Bug 2901 - Add CommandLine::Parse (const std::vector<std::string>> args)
- Bug 2461 - CommandLine should handle non-option arguments
- Bug 2801 - FdNetDevice device MTU is not set correctly
Known issues
------------
In general, known issues are tracked on the project tracker available
at http://www.nsnam.org/bugzilla/
Release 3.28
============
Availability
------------
This release is available from:
https://www.nsnam.org/release/ns-allinone-3.28.tar.bz2
Supported platforms
-------------------
This release is intended to work on systems with the following minimal
compiler requirements (other compilers supporting C++11 may also work):
- g++-4.9 or later
- Apple LLVM version 7.0.2 or later
- clang-3.3 or later
In addition, a Python 2.7 (Python 2 series) or Python 3.4 (Python 3 series)
or later is required.
This release has been tested on the following platforms:
- Ubuntu 17.10 (64 bit) with g++-7.2.0 and Python 2.7.14
- Ubuntu 16.04 (64 bit) with g++-5.4.0 and Python 2.7.12
- Fedora Core 27 (64 bit) with g++-7.3.1 and Python 2.7.14
- Fedora Core 26 (64 bit) with g++-7.3.1 and g++-7.1.1, and Python 2.7.14
- CentOS/RHEL 7.4 (64-bit) with g++-6.3.1 and Python 3.5.1
- Note: the default g++ version (4.8) must be upgraded
- CentOS/RHEL 6.8 (64-bit) with g++-4.9.2 and Python 2.7.13
- Note: the default g++ version (4.4) must be upgraded
- Note: the default Python version (2.6) must be upgraded
- OS X Sierra 10.12.6 with Xcode 9.2, Apple LLVM version 9.0.0, Python 2.7.13
- OS X Yosemite 10.10.5 with Xcode 7.2.1, Apple LLVM vers. 7.0.2, Python 2.7.10
New user-visible features
-------------------------
- (tcp) Added TCP-LP as a congestion control module
- (tcp) When TCP SACK is enabled, the third rule defined in RFC 6675 regarding the next segment to transmit is followed
- (tcp) Separated the CongestionWindow trace into a CongestionWindow trace and a CongestionWindowInflated trace, where the latter tracks window inflation during loss recovery as defined by the Reno algorithm
- (tcp) Implemented the core functionality of TCP Pacing.
- (lr-wpan) Extended addressing mode is now supported.
- (internet) Ipv[4,6]AddressGenerator can now check if an address or a network is already allocated.
- (internet) Ipv6AddressHelper has more pedantic checks, but more than one such helper can now be used in a program.
- (lte) UEs can now use IPv6 to send and receive traffic.
- (uan) The UAN module now supports an IP stack
- (uan) Added some examples for running raw, IPv4, IPv6, and 6LoWPAN over UAN
- (traffic-control) Added a FIFO queue disc (FifoQueueDisc) and the Token Bucket Filter (TbfQueueDisc).
Bugs fixed
----------
- Bug 1745 - There can be only one Ipv6AddressHelper in a script
- Bug 1783 - tcp: Experiencing drops during fast recovery causes TCP's congestion window to blow up. Not anymore.
- Bug 2107 - lte: Enable PCAP for S1 and X2 point-to-point links
- Bug 2152 - lte: Fix uplink HARQ retx. out of synch at the MAC layer
- Bug 2151 - lte: Generate correct redundancy version in uplink HARQ
- Bug 2277 - lte: EpcTftClassifier::Classify blindly assumes that a packet has a L4 header
- Bug 2505 - network: Avoid asserts in Header/Trailer deserialization
- Bug 2653 - tcp: Avoid saving smaller TS in case of packet reordering
- Bug 2656 - wifi: Minstrel and MinstrelHt provide different results for 802.11a/b/g
- Bug 2754 - lte: Incorrect arguments passed to Asn1Header::SerializeInteger
- Bug 2764 - wifi: WifiSpectrumModelId doesn't distinguish 11ax from legacy
- Bug 2766 - core: Modify logging for int64x64 to avoid stack overflow
- Bug 2768 - lte: LteUeNetDevice has a null MAC address
- Bug 2774 - wifi: Wifi Transmitter Sends ADDBA Request Continuously Even After Transmitting Delba Frame
- Bug 2791 - wifi: Interference Helper gives negative trace value for Interference Power
- Bug 2807 - energy: GetTotalEnergyConsumption is not updated correctly
- Bug 2809 - wifi: Wifi doesn't fully stop when energy is depleted
- Bug 2813 - wifi: OFDM 10 MHz and 5 MHz PHYs do not have correct subcarrier frequency spacings
- Bug 2820 - wifi: segmentation fault when Rrpaa wifi manager is used
- Bug 2821 - lte: Set correct limit for UL retx. in Round Robin scheduler
- Bug 2824 - ICMP opcode fr fragment timeout drop is wrong
- Bug 2826 - wifi: Management frames should be sent using the lowest basic rate
- Bug 2827 - wifi: Active scanning not working with 802.11n/ac/ax
- Bug 2828 - OLSR simple P2P example produces wrong results
- Bug 2831 - wifi: runtime channel width switch has no effect
- Bug 2832 - tcp: Partial ACK triggering repeated retransmission
- Bug 2836 - wifi: Missing VHT information in radiotap header when A-MPDU is used
- Bug 2838 - wifi: ht-wifi-network crashes with RTS/CTS enabled and frequency set to 2.4GHz
- Bug 2840 - lte: Wrong configuration of eNBs and UEs
- Bug 2843 - spectrum, wifi: Incorrect channel width and center frequency provided for non-HT PPDUs when building SpectralDensity
- Bug 2848 - wifi: Association ID not correctly set upon association
- Bug 2849 - lte: Received RLC and PDCP PDUs are missing in the stats files
- Bug 2854 - wifi: Fix 802.11ax channel width capabilities
- Bug 2856 - wifi: Correct bugs and improve logging in MinstrelHt
- Bug 2859 - tcp: calculation of BytesInFlight during partial recovery is fixed
- Bug 2866 - tcp: Removed VS warnings on TcpSocketBase
- Bug 2872 - csma: Packet copy in CsmaChannel breaks netanim tracing
- Bug 2873 - tcp: Potential SIGFPE in TcpYeah
- Bug 2874 - tcp: Corrected interpretation of RFC 6675 for IsLost check
- Bug 2875 - tcp: Use Rule3 of RFC6675 only with SACK enabled
- Bug 2876 - tcp: Do not shrink adv window after we send the FIN
- Bug 2877 - wifi: Wrong data types for CWmin and CWmax
- Bug 2885 - lte: Tests fail for CQA and PSS testsuites
- Bug 2890 - internet: Icmpv4 "ECHO" is defined in system-wide headers
- Bug 2898 - lte: Coding issue in function RrcAsn1Header::DeserializeRachConfigCommon
- Bug 2899 - lte: Inconsistent type for variable cellForWhichToReportCGI
- wifi: Fix wrong guard band for SpectrumWifiPhy DSSS/HR-DSSS
Known issues
------------
In general, known issues are tracked on the project tracker available
at http://www.nsnam.org/bugzilla/
Release 3.27
============
Availability
------------
This release is available from:
https://www.nsnam.org/release/ns-allinone-3.27.tar.bz2
Supported platforms
-------------------
This release is intended to work on systems with the following minimal
requirements (Note: not all features available on all platforms):
- g++-4.9 or later (Note: this is an upgraded requirement from ns-3.26)
- Apple LLVM version 7.0.2 or later
- clang-3.3 or later
- Python 2.7 (Python 2 series) or Python 3.4 (Python 3 series) or later
This release has been tested on the following platforms:
- Ubuntu 17.04 (64 bit) with g++-6.3.0
- Ubuntu 16.04 (64 bit) with g++-5.4.0
- Ubuntu 14.04.5 (64 bit) with g++-4.9.4
- Note: the default g++ version (4.8) must be upgraded
- Fedora Core 26 (64 bit) with g++-7.1.1
- Fedora Core 22 (64 bit) with g++-5.3.1
- CentOS/RHEL 7.4 (64-bit) with g++-6.3.1
- Note: the default g++ version (4.8) must be upgraded
- CentOS/RHEL 6.8 (64-bit) with g++-4.9.2
- Note: the default g++ version (4.4) must be upgraded
- Note: the default Python version (2.6) must be upgraded
- OS X Sierra 10.12.6 with Xcode 9.0 and Apple LLVM version 9.0.0
- OS X El Capitan 10.11.6 with Xcode 8.2.1 and Apple LLVM version 8.0.0
- OS X Yosemite 10.10.5 with Xcode 7.2.1 and Apple LLVM version 7.0.2
- Windows 10 Linux Subsystem with g++-5.4.0
New user-visible features
-------------------------
- (build) Modules can also be located in contrib/ directory (as well as src/)
- (core) Logging timestamp precision has been improved
- (lte) LTE carrier aggregation feature according to 3GPP Release 10 is now supported.
- (traffic-control) CsmaNetDevice, SimpleNetDevice and WifiNetDevice support flow control.
- (traffic-control) Added support for queue discs to mark packets, and ECN support has been added to RED
- (traffic-control) A multi-queue aware queue disc modelled after Linux mq
- (traffic-control) Added support for detailed statistics output of queue discs
- (traffic-control) Added support for tracing queue sojourn times
- (tcp) The SACK option and the RFC 6675 loss recovery algorithm are now supported.
- (tcp) A LEDBAT model has been added.
- (wifi) 802.11ax High Efficiency (HE) physical layer modes are now supported.
- (wifi) A new RRPAA rate control mechanism has been added.
- (wifi) A new trace source for TXOP duration is now supported
- (wifi) Frame capture effect can now be modelled
- (uan) World Ocean System Simulation (WOSS) integration, and new PER models
Bugs fixed
----------
- Bug 1034 - wifi: No trace source for packet dropping from WifiMacQueue
- Bug 2007 - uan: Remove deprecation on SetRxThresholdDb
- Bug 2048 - lte: Fix scheduler resource allocation when CQI==0 (out of rante)
- Bug 2133 - tcp: Avoid assert when receiving data in FIN_WAIT_1 or _2 states
- Bug 2214 - tcp: Use of ScheduleNow only in selected part of the code
- Bug 2221 - network: Remove constraint on size of ns3::Packet Tag objects
- Bug 2256 - tcp: bytes in flight now updated in TcpTxBuffer
- Bug 2263 - tcp: Support processing of multiple TCP options
- Bug 2285 - tcp: Loss of ack of SYN can cause improper connection setup
- Bug 2367 - wifi: BlockAckManager does not remove iterators to freed items
- Bug 2450 - propagation: LogDistancePropagationLossModel is not continuous
- Bug 2456 - lte: MemberCschedSapProvider and Member CschedSapProvider templates
- Bug 2464 - spectrum: Store spectrum conversion matrix in CSR format
- Bug 2467 - spectrum: Do not schedule StartRx for receivers on other models
- Bug 2471 - wifi: unable to disable Block Ack agreement for 802.11n
- Bug 2477 - wifi: DCF manager assert
- Bug 2485 - traffic-control: Check queue full before checking RED thresholds
- Bug 2491 - wifi: replace DcfManager::MY_DEBUG
- Bug 2492 - uan: Make use of RxGain attribute in UanPhyGen class
- Bug 2511 - wifi: HT Greenfield is not working
- Bug 2512 - traffic-control: Byte mode not configured correctly for RED test
- Bug 2513 - core: ParetoRandomVariable needs a "scale", not a "mean" attribute
- Bug 2518 - build: Suppress printing of list of modules for Python programs
- Bug 2519 - lte: m_windowOffsetsMap.end () dereference
- Bug 2520 - examples: TCP variant not configured in wifi-tcp.cc
- Bug 2521 - internet: Include ipv6-option.h in wscript
- Bug 2523 - lte: Generate the RLC PDU properly
- Bug 2527 - internet: PrintRoutingTable adds an optional Time::Units parameter
- Bug 2528 - wifi: 802.11n RIFS cannot be enabled
- Bug 2529 - wifi: Missing trace for Block ACK timeout or missing MPDUs
- Bug 2530 - aodv: Rename aodv::SetBalckListTimeout to aodv::SetBlackListTimeout
- Bug 2531 - lte: Set HARQ feedback default value to avoid false retrasmissions
- Bug 2532 - wifi: Inconsistencies between 802.11n MCS and NSS value in TXVECTOR
- Bug 2533 - wifi: Provide better 802.11n/ac PHY abstraction for SIMO/MISO/MIMO
- Bug 2534 - traffic-control: ARED and PIE examples should return 1 upon exit
- Bug 2535 - utils: memory leak in bench-simulator.cc
- Bug 2536 - wimax: fixed dead assignment and potential memory leak in wimax
- Bug 2537 - traffic-control: Fix dead assigment on CoDel::DoDequeue
- Bug 2538 - tap-bridge: fixed dead assignment on tap-bridge
- Bug 2540 - mesh: fixed dead assignment on mesh/ie-dot11s-perr
- Bug 2541 - wifi: preamble not assigned correctly
- Bug 2542 - wifi: dead assignment on wifi mac-low
- Bug 2543 - lte: Fix when EstimateUlSinr returns NO_SINR
- Bug 2545 - flow-monitor: Optimized build fails for flow-monitor
- Bug 2547 - tcp: dead assignments on various tcp congestion controls
- Bug 2551 - wifi: wifi preamble should be part of TXVECTOR
- Bug 2552 - wifi: Remove code duplication between Yans and Spectrum
- Bug 2554 - wave: Fix static analysis warning
- Bug 2556 - csma, point-to-point: Avoid modification of transmitted packets
- Bug 2557 - point-to-point: Fix dead assignments in queue-discs-benchmark
- Bug 2559 - tcp: TCP advertised window still incorrect
- Bug 2561 - tcp: TCP can not use Connect after a BindToNetDevice
- Bug 2563 - bindings: pybindgen version check to >= minimum version required
- Bug 2564 - wifi: Simulation crashes when CtsTimeout triggered for A-MPDU
- Bug 2565 - tcp: Do not wait for 2*MSL to notify socket close
- Bug 2566 - wifi: BlockAckManager::GetNRetryNeededPackets missing some packets
- Bug 2568 - examples: Avoid enumerating TCP variants
- Bug 2577 - wifi: crashes when A-MPDU and multiple TOS used, upon CTS timeout
- Bug 2578 - wifi: Unexpected assert "Internal collision but no packet in queue"
- Bug 2584 - wifi: MacLow triggers StartNext even if there is no TXOP
- Bug 2587 - tcp: Avoid overflow in htcp.cc
- Bug 2590 - traffic-control: Minor enhancements in red-queue-disc{.h, .cc}
- Bug 2591 - wifi: 802.11e Block Ack cannot be enabled on HT/VHT stations
- Bug 2594 - wifi: vht-wifi-network very low throughtput at MCS 6, 160 MHz, SGI
- Bug 2596 - network: EthernetTrailer::GetFcs() should be const
- Bug 2601 - wifi: HT stations should use 40 MHz width if configured 80 or 160z
- Bug 2604 - wifi: QosData frames separation with Block Ack enabled
- Bug 2605 - wifi: HT/VHT station sending to legacy results in null throughput
- Bug 2606 - wifi: Ideal rate manager for HT/VHT station to a legacy AP
- Bug 2607 - wifi: Correct overflow in channel width loop in Minstrel HT
- Bug 2613 - tcp: MaxRxSequence () is sometimes too large
- Bug 2614 - internet: RIP header version should be set to 2
- Bug 2615 - wifi: When the TXOP limit is nonzero, fragment in some cases
- Bug 2617 - traffic-control: PfifoFastQueueDisc::Peek all bands
- Bug 2621 - wifi: Fix mismatch between log message and action
- Bug 2624 - lte: Inconsistent coding of type and naming
- Bug 2627 - internet: Ipv6RawSocket does not honor the bound interface
- Bug 2628 - wifi: Simulation crashes because of an out of range TID
- Bug 2629 - wifi: Assert failure in MinstrelHtWifiManager::GetLowestIndex
- Bug 2632 - lte: Build error due to uninitialized variable in rem helper
- Bug 2646 - lte: lena-simple-eps-emu example will never work
- Bug 2647 - wifi: ideal-wifi-manager-example crashes when NSS > 1
- Bug 2649 - tcp: Disabling TCP SACK doesn't fall back to NewReno
- Bug 2654 - wifi: Rraa wifi manager cannot be used with 802.11b
- Bug 2655 - wifi: A-MPDU simulation using TCP sometimes fails
- Bug 2658 - core: Avoid unexpected TracedValue type conversions
- Bug 2660 - traffic-control: TrafficControlHelper::Default configuration
- Bug 2661 - wave: Fix outdated class references in documentation
- Bug 2665 - internet: Ipv4RawSocket can not send to broadcast or multicast
- Bug 2666 - lte: Remove deprecated variables/config paths
- Bug 2668 - various: Make template classes use NS_LOG_* macros
- Bug 2671 - internet: ArpCache::Entry::SetMacAddress is misspelled
- Bug 2673 - wifi: run-time channel switch does not update WiFi spectrum model
- Bug 2675 - traffic-control: Use correct string value in PIE example
- Bug 2716 - tcp: TCP socket ignoring FIN flag when in FIN_WAIT state
- Bug 2717 - internet: Fix mask for Ipv4RoutingTableEntry::CreateDefaultRoute
- Bug 2722 - wifi: 802.11g sends DSSS spectrum signals inappropriately
- Bug 2731 - lte: Allow retranmission in RLC AM when PR expires, vtS overflows
- Bug 2732 - applications: BulkSend Tx trace is fired too much
- Bug 2733 - wifi: Ideal wifi manager cannot handle NSS higher than 1
- Bug 2741 - internet: IPv4 fragmentation fails on last fragment fragmentation
- Bug 2744 - wifi: 802.11n/ac with RTS/CTS crashes for a large number of nodes
- Bug 2751 - traffic-control: QueueDisc::Enqueue() order of operations
- Bug 2756 - internet: Ipv4AddressGenerator underestimates available addresses
- Bug 2757 - wifi: 802.11n/ac/ax maximum TXOP is not properly enforced
- Bug 2758 - internet: IPv4 sockets bound to unicast receiving subnet broadcast
- Bug 2759 - internet: Packet conversion from broadcast to subnet-directed
- Bug 2760 - internet: OLSR uses unicast-bound sockets to receive broadcasts
- Bug 2761 - wifi: Packet has no Traffic ID for CTS frames when A-MPDU is used
- Bug 2762 - internet: BindToNetDevice behaviour is not coherent with Linux
- Bug 2763 - wifi: management packets in PCAPs are marked as wrong by Wireshark
- Bug 2769 - tcp: Set ssthresh correctly upon RTO
- Bug 2771 - wifi: IdealWifiManager problems under different number of antennas
- Bug 2776 - wifi: Fix segmentation fault in MacLow
- Bug 2777 - lte: Save bearer info in m_drbMap, needed for handover request
- Bug 2781 - tcp: Do not go beyond limit in TcpTxBuffer
- Bug 2783 - wifi: MonitorSnifferRx SNR is invariant to RxNoiseFigure
- Bug 2786 - lte: Remove unimplemented declaration
- Bug 2796 - tcp: NSC TCP transmission flow control not working
Known issues
------------
In general, known issues are tracked on the project tracker available
at http://www.nsnam.org/bugzilla/
Release 3.26
============
Availability
------------
This release is available from:
https://www.nsnam.org/release/ns-allinone-3.26.tar.bz2
Supported platforms
-------------------
This release is intended to work on systems with the following minimal
requirements:
- g++-4.8 or later
- clang-3.3 or later
- Python 2.7 (Python 2 series)
- Python 3.4 or later (Python 3 series)
This release has been tested on the following platforms:
- Ubuntu 16.04 (64 bit) with g++-5.4.0
- Ubuntu 14.04 (64 bit) with g++-4.8.2
- Fedora Core 24 (64 bit) with g++-6.1.1
- Fedora Core 22 (32 bit) with g++-5.3.1
- Fedora Core 21 (64 bit) with g++-4.9.2
- CentOS/RHEL 6.7 (64-bit) with g++-4.9.2
- OS X El Capitan 10.11.4 with Xcode 7.3.1 and Apple LLVM version 7.3.0
- OS X El Capitan 10.11.3 with Xcode 7.2.1 and Apple LLVM version 7.0.2
New user-visible features
-------------------------
- (aodv) The node search radius is increased progressively (as per standard).
- (build system) New --check-config option to waf to reprint the summary
of optional features which are configured.
- (build system) C++11 features are now supported in the codebase
- (core) DES Metrics support; see the API docs for class DesMetrics.
- (internet) Added TCP Vegas, Scalable, Veno, Illinois, Bic, YeAH, and
H-TCP congestion control algorithms
- (internet) Add a TOS field to the InetSocketAddress class
- (network) SocketAddressTag has been removed from the codebase.
Users can use RecvFrom (for UDP) or GetPeerName (for TCP) instead.
- (traffic control) Added the FQ-CoDel and PIE queue disc models
- (traffic control) Introduce Byte Queue Limits (BQL)
- (wifi) A new SpectrumWifiPhy physical layer model, making use of the
ns-3 spectrum framework, has been introduced. The current version of
this model matches the API and behavior of YansWifiPhy closely, but
over time is expected to support a different PHY abstraction and error
models.
- (wifi) IEEE 802.11e TXOP limits are now enforced for different access
categories when a QoS MAC is configured.
Bugs fixed
----------
- Bug 231 - Avoid adding SocketAddressTag (at all)
- Bug 1579 - Final fix for segfault caused by EDCA fragmentation
- Bug 1797 - Rate adaptation algorithms don't work with new 802.11n/ac standards
- Bug 1911 - AODV doesn't work with more than one NetDevice
- Bug 1939 - Aggregating the same object to two nodes produce unexpected results
- Bug 1977 - v4Ping verbose output when not explicitly stopped
- Bug 2057 - ARP and Ndisc caches should be updated by receiving valid L3 packets
- Bug 2069 - Avoid integer overflow in ByteTagList
- Bug 2102 - Ipv4GlobalRouting confused by bridged interfaces
- Bug 2123 - AODV doesn't use / honor IP TTL in the RREQ / RREP
- Bug 2149 - support deprecating attributes and trace sources
- Bug 2222 - incorrect EDCA behavior in case of internal collision
- Bug 2270 - Support -std=c++11 by default
- Bug 2306 - Raise DCF IsBusy() condition for CCA busy
- Bug 2307 - Get rid of m_receivedAtLeastOneMpdu flag
- Bug 2308 - PacketTag instead of ByteTag in LTE PDCP/RLC
- Bug 2344 - Attribute names can't have spaces
- Bug 2346 - sixlowpan CompressionThreshold limit can be violated
- Bug 2347 - LrWpan Ascii traces are hooked to the wrong traces.
- Bug 2351 - Fix symbol rate calculation for channels with 10 and 5 MHz width
- Bug 2352 - Add 'drop oldest' drop policy to WifiMacQueue
- Bug 2369 - Generate backoff if DCF requests access during AIFS
- Bug 2375 - Flowmonitor parse crashes when no pkt is received
- Bug 2376 - New A-MPDU might not be received if MPDUs of a previous A-MPDU are lost
- Bug 2377 - SocketIpTosTag and SocketIpv6TclassTag may be added twice in UDP
- Bug 2378 - A-MPDU variables are not correctly reset in YansWifiPhy when a PLCP preamble/header failed
- Bug 2379 - BlockAckRequest should not be part of single-TID A-MPDUs
- Bug 2380 - EdcaTxopN fails to retrieve TID for ADDBA requests, ADDBA responses and DELBA frames
- Bug 2383 - IPv4 header for reassembled packets reports a wrong payload size
- Bug 2386 - Move UanPhyGen out of Tx mode when energy depleted
- Bug 2387 - Fix waf --check-profile command
- Bug 2390 - WaypointMobilityModel::AddWaypoint lazy notify schedules an event using absolute time (should be relative time)
- Bug 2392 - SYN segment advertised window should not be scaled
- Bug 2395 - Upgrade pybindgen for Python >= 3.5
- Bug 2396 - move utility functions to WifiPhy
- Bug 2397 - add backoff and cw tracing to EDCA
- Bug 2398 - add SNR tag to beacons and probe responses
- Bug 2401 - Deserialize correctly the len of options in TcpHeader
- Bug 2402 - IPv4 Interface forwarding state is not honored
- Bug 2406 - Poor 802.11g performance in ad-hoc mode
- Bug 2408 - Simulation fails when 802.11n/ac is running with HT Minstrel and pcap enabled
- Bug 2412 - align WifiPhy frequency and channel number
- Bug 2414 - UdpSocket doesn't call NotifyConnectionFailed
- Bug 2419 - BsmApplication should use RecvFrom and not SocketAddressTag
- Bug 2420 - Remove code duplication between Wifi and Wave modules
- Bug 2421 - Forbid negative RemainingAmpduDuration for the last A-MPDU
- Bug 2425 - UdpSocketImpl simplification
- Bug 2427 - 802.11ac selects wrong slot duration
- Bug 2433 - Bic does not copy private parameters
- Bug 2436 - Do not send block ack if received A-MPDU not addressed to station
- Bug 2438 - Routing protocols should stop processing packets coming from a non-forwarding interface
- Bug 2439 - SixLowPan Compression kind need to be casted to int in the Print function
- Bug 2440 - SocketIpTosTag might be added twice if a packet is sent multiple times
- Bug 2442 - ConfigStore crash if object container has null item
- Bug 2443 - Increase application counters to accommodate Gbps transfer rates
- Bug 2444 - PcapHelper DataLinkType enum should have a name
- Bug 2445 - Out of bounds array access in Minstrel HT rate control
- Bug 2446 - Fix comma delimiter instead of pipe delimiter in Attributes
- Bug 2448 - Run examples in traffic control test suite
- Bug 2452 - Add Object::IsInitialized method
- Bug 2454 - DsrRouting::NotifyDataReceipt is also triggered for wifi management packets
- Bug 2461 - TCP BIC should copy private members
- Bug 2468 - Simulation with A-MPDU enabled hangs when fragmentation threshold is smaller than MSDU size
- Bug 2469 - send Block Ack Request upon short/long retry failures
- Bug 2474 - UdpEchoClient does not call Connect with addresses of type Inet[6]SocketAddress
- Bug 2477 - Partial fix for wifi asserts when transmit cancels a reception
- Bug 2479 - Flow monitor does not a have a "DROP_QUEUE_DISC" drop reason
- Bug 2480 - Use SQLite prepared statements
- Bug 2481 - Missing or incorrect group names
- Bug 2484 - Corrected the exit from CA_LOSS state in TCP
- Bug 2486 - NextTxSequence was not traced back from TCB
- Bug 2488 - Error in UanPdp::SumTapsFromMaxNc
- Bug 2496 - BSS membership selector in SupportedRates
- Bug 2500 - Ipv[4,6]RawSocket ignores IpTtl tag
- Bug 2507 - ConfigStore RawTextConfigLoad doesn't reset stream error state
- Bug 2508 - Duplicate of bug 2507
- Bug 2514 - The maximum transmission time for VHT A-MPDUs is not correct
- No BugId - Arp logging: label with request or reply properly
Known issues
------------
In general, known issues are tracked on the project tracker available
at http://www.nsnam.org/bugzilla/
Release 3.25
============
Availability
------------
This release is available from:
https://www.nsnam.org/release/ns-allinone-3.25.tar.bz2
Supported platforms
-------------------
This release has been tested on the following platforms:
- Ubuntu 15.10 (64 bit) with g++-5.2.1
- Ubuntu 14.04 (64 bit) with g++-4.8.2
- Fedora Core 23 (64 bit) with g++-5.3.1
- Fedora Core 22 (32 bit) with g++-5.1.1
- Fedora Core 21 (64 bit) with g++-4.9.2
- Arch Linux (64 bit) with g++-5.3.0 and clang++-3.7.1
- CentOS/RHEL 6.7 (64-bit) with g++-4.4.7
- OS X El Capitan 10.11.4 with Xcode 7.3 and Apple LLVM version 7.3.0
- OS X El Capitan 10.11.3 with Xcode 7.2.1 and Apple LLVM version 7.0.2
- OS X Yosemite 10.10.5 with Xcode 7.2.1 and Apple LLVM version 7.0.2
- FreeBSD 10.2-RELEASE (64 bit) with clang-3.4.1
New user-visible features
-------------------------
- (internet) The native TCP implementation has been refactored, for the
following improvements:
1) congestion control has been aligned with the Linux architecture,
to facilitate easier coding of new congestion control algorithms
or porting implementations from the Linux kernel,
2) Fast Retransmit and Fast Recovery algorithms, compliant to RFCs, are
shared by all TCP variants, unlike previous releases.
3) TCP Hybla and TCP HighSpeed variants have been added.
- (routing) The PrintRoutingTable* functions now print the following information
each time they are called:
1) the node ID,
2) the global time,
3) the local time (allowing for future introduction of per-node clocks),
4) the routing protocol type
- (traffic control) A traffic control sublayer has been added with the aim of
introducing an equivalent of the Linux Traffic +Control infrastructure into
ns-3. This layer sits in between the NetDevices (L2) and the network
protocol (e.g. IP). It is in charge of processing packets and performing
actions on them: scheduling, dropping, marking, policing, etc. Initial
support for flow control has been added to the PointToPointNetDevice;
backward-compatible support for other device types is provided.
- (traffic control) A three band priority queue modelled after Linux
pfifo_fast queueing discipline has been added.
- (traffic control) Adaptive RED extensions have been added to the RED model
- (wifi) A number of changes related to improving support for 802.11n/ac
models have been introduced.
1) Two rate controls compatible with High Throughput (HT) Wi-Fi modes
(e.g. 802.11n/ac), Ideal and MinstrelHT, have been added
2) Support for multiple spatial streams (MIMO) using existing SISO
error models
3) The WiFi helper API for the WifiMac sublayer, and the configuration
of HT modes and parameters, has been simplified
4) Better support for backward compatibilty with legacy modes
- (wifi) 802.11g was made backward compatible with 802.11b networks
- (internet) L4 protocols (e.g., TCP, UDP, ICMP, etc.) can be demultiplexed
by IP according to the incoming interface. In other words, it is now
possible to use specialized L4 protocols according to the interface.
- (internet) Ipv6Address::IsAllHostsMulticast() is now deprecated.
FF02::3 is not in the official reserved IPv6 multicast address list.
- (internet) Ipv6Address::IsAll[Nodes,Routers]Multicast() now checks the
address scope beyond the simple link-local. Nodes are checked for
Interface-Local, Link-Local and Realm-Local, Routers for the above plus
Site-Local.
- (internet) Ipv6 routing protocols must now *not* forward packets to upper
layers unless for extremey specific cases. The Ipv6L3protocol handles
almost all the packets directed to the host.
- (internet) Ipv6 can now reject packets directed to an address not configured
on the interface they are received from (Strong End System Model, RFC 1222).
- (internet) UDP and Ipv6 RAW sockets can now join Ipv6 multicast groups.
Incoming packets will be filtered according to if there's a socket listening
to that group. Source filtering is left to the application.
- (network) ns-3 is now capable of serializing cooked (SLL) headers. This is
used in DCE to allow the generation of pcap directly readable by wireshark.
- (internet) It is now possible to set custom values for RipNg Link Down
(standard is 16).
- (internet) permanent (static) NDISC entries can be created for IPv6
- (internet) IPv4 RIPv2 protocol model is now available.
Bugs fixed
----------
- Bug 1132 - useless for loops in block-ack-test-suite.cc
- Bug 1205 - EDCA is incorrectly modelled as DCF
- Bug 1571 - TCP zero-window and flow control window updates by the receiver
- Bug 1631 - Acoustic modem Energy consumption calc is wrong
- Bug 1761 - Rounding with olsr::EmfToSeconds
- Bug 1783 - BytesInFlight value fixed
- Bug 1954 - Serialized size of wifi-net-device differ for TX and RX trace
- Bug 1999 - PointToPointRemoteChannel invokes PointToPointChannel constructor
- Bug 2003 - Missing DSSS short PLCP preamble
- Bug 2041 - TCP RTO needs unit tests
- Bug 2068 - Timestamp option conforms to RFC 7323
- Bug 2102 - Make global routing robust to bridged links
- Bug 2116 - refactoring aggregation API
- Bug 2120 - 802.11g networks are not compatible with 802.11b clients
- Bug 2141 - TCP DataSent callback now correctly notifies sent data, without missing bytes in particular conditions
- Bug 2150 - The TCP sender keeps retransmitting and does not terminate the connection after some retries.
- Bug 2159 - TCP advertises wrong receive window
- Bug 2176 - Building IPv4 address from char* doesn't look reliable
- Bug 2183 - LiIonEnergySourceHelper is not in the energy wscript
- Bug 2184 - Integer overflow in Wi-Fi MacLow; remove dependency between tx and rx reference number field in MPDU status
- Bug 2185 - WiFi MacLow may respond to errored frames that it should ignore
- Bug 2193 - Simulation fails when transmitting very small MPDU subframes
- Bug 2195 - Udp[*]Client can't send packets to broadcast address
- Bug 2201 - Simulation fails when active probing is used in 802.11n/ac with channel bonding enabled
- Bug 2206 - Split internet-apps from applications
- Bug 2207 - Print node ID and time when printing routing tables
- Bug 2208 - Interface index based L4 protocols
- Bug 2210 - set Order field to 0 for HT/VHT
- Bug 2211 - Ipv{4,6}EndPoint can cause memory corruption
- Bug 2213 - Inconsistencies may exist between the selected WifiMacHelper and the chosen 802.11 version
- Bug 2219 - SixLowPanNetDevice hangs trying to decode a IPv6 Fragment extension header
- Bug 2224 - scope of GetAmpduExist() in EdcaTxopN
- Bug 2233 - Implement RFC 1222 - Strong End System Model
- Bug 2234 - Ipv6L3Protocol should trash multicast packets not interesting for the node
- Bug 2238 - Ipv6 routing reorganization
- Bug 2242 - Mobility of both sender PHY and receiver PHY set to sender mobility in lr-wpan-phy-test.cc example.
- Bug 2243 - TCP Socket Fork() fails to copy some parameters, causing connections to close prematurely on retransmit
- Bug 2246 - Some DSR LogComponents and classes are not defined in a unique way.
- Bug 2247 - Disabled Fast retransmit after an RTO
- Bug 2249 - LTE perl speed tests possibly broken
- Bug 2252 - Nix needs StaticRouting to work
- Bug 2254 - Ipv[4,6]RawSocket can return the wrong number of bytes sent.
- Bug 2255 - Ipv6RawSocket does not call data sent callbacks.
- Bug 2257 - Ipv[4,6]InterfaceContainer::Add are not consistent
- Bug 2258 - TcpSocketBase updated options and RTT for out of range segments.
- Bug 2259 - GSL not successfully enabled for Wi-Fi DSSS error rate model
- Bug 2262 - Corrected initial slow start threshold value
- Bug 2266 - NixRouting info are not copied during a packet fragmentation.
- Bug 2267 - Wrong channel bandwidth value in pcap files
- Bug 2271 - Decision to enable RTS/CTS handshake for A-MPDUs should be based on the comparison between RtsCtsThreshold and the total A-MPDU size
- Bug 2272 - SixLowPan NetDevice can not send uncompressed packets larger than 802.15.4 MTU
- Bug 2273 - WeakEs model should be enforced in Static and Global routing
- Bug 2275 - AdhocWifiMac not compatible with 802.11n/ac
- Bug 2279 - Ipv[4,6]L3Protocol::GetInterfaceForDevice speedup.
- Bug 2283 - Add capability to use pcap trace files with nanosecond precision timestamps
- Bug 2286 - Support for SLL header (de)serialization.
- Bug 2287 - FlowMonitor is confused by IP over IP.
- Bug 2288 - Ipv4 broadcast and multicast packets are replicated on all the interfaces.
- Bug 2289 - RIP v2 implementation
- Bug 2290 - Cannot run click examples from test.py
- Bug 2292 - Uninitialized variables since commit 7c60a9f8f271
- Bug 2293 - Red Queue Estimator spins when trying to compute queue average size under long idle times.
- Bug 2297 - 802.11n/ac networks are not compatible with legacy clients
- Bug 2302 - Fixing RTT calculation inside TCP Socket
- Bug 2303 - WifiMacQueue::GetSize should cleanup queue beforehand
- Bug 2304 - DSCP Set/Get are using 8 bit values instead of 6
- Bug 2307 - m_receivedAtLeastOneMpdu is not always reset
- Bug 2311 - save Ht/Vht capabilities info on a per-station basis
- Bug 2313 - Assert failed when using aggregation and RTS/CTS
- Bug 2315 - Problem when BACK Request is part of an A-MPDU
- Bug 2316 - MacLow shall use a single TXVECTOR for all MPDUs belonging to a same A-MPDU
- Bug 2317 - Get the non-HT reference rate of a HT MCS
- Bug 2318 - MPDU Aggregation fails with TCP
- Bug 2319 - BlockAckTimeout value is too low for 802.11n operating at 2.4 GHz
- Bug 2320 - Add method to check whether a WifiTxVector contains a valid combination of WifiMode, number of spatial streams and channel width
- Bug 2321 - Wifi rate managers should not be triggered for each MPDU when A-MPDU is used
- Bug 2327 - CWmin value selection for 802.11g is not compliant with the standard rules
- Bug 2328 - changes to antenna configuration should update HT MCS set
- Bug 2331 - Wrong mobility model in vanet-routing-compare example
- Bug 2332 - Assert failed when using aggregation and two pairs of AP-STA
- Bug 2337 - WifiPhy uses channel width in Hz iso MHz
- Bug 2338 - WifiMode selected for control frames may sometimes be invalid
Known issues
------------
In general, known issues are tracked on the project tracker available
at http://www.nsnam.org/bugzilla/
Release 3.24.1
==============
Release 3.24.1 is a maintenance release that fixes three issues:
- support for Xcode 7 clang compiler version
- detection of Python bindings location
- compilation problem on 32-bit gcc-4.4 machine
The issues prevented selected systems from being able to successfully
build ns-3, and prevented the released version from being able to
detect the presence of pybindgen used for Python bindings.
Availability
------------
This release is available from:
https://www.nsnam.org/release/ns-allinone-3.24.1.tar.bz2
Supported platforms
-------------------
This release has been tested on the following platforms:
- Ubuntu 15.04 (64 bit) with g++-4.9.2
- Fedora Core 22 (32 bit) with g++-5.1.1
- Fedora Core 21 (64 bit) with g++-4.9.2
- Ubuntu 14.04 (64 bit) with g++-4.8.2
- Ubuntu 12.04.4 (64 bit) with g++-4.6.3
- CentOS/RHEL 6.7 (64-bit) with g++-4.4.7
- OS X Yosemite 10.10.5 with Xcode 7 and Apple LLVM version 7.0.0
- OS X Yosemite 10.10.5 with Xcode 6.4 and Apple LLVM version 6.1.0
- FreeBSD 10.2-RELEASE (64 bit) with clang-3.4.1
New user-visible features
-------------------------
Features are identical to release 3.24.
Bugs fixed
----------
- Bug 2181 - Xcode 7.0 compiler warnings trigger build failure
- Bug 2182 - pybindgen required version is now a string literal
- Bug 2184 - integer overflow in MacLow
Release 3.24
============
Availability
------------
This release is available from:
https://www.nsnam.org/release/ns-allinone-3.24.tar.bz2
Supported platforms
-------------------
This release has been tested on the following platforms:
- Ubuntu 15.04 (64 bit) with g++-4.9.2
- Fedora Core 22 (32 bit) with g++-5.1.1
- Fedora Core 21 (64 bit) with g++-4.9.2
- Ubuntu 14.04 (64 bit) with g++-4.8.2
- Ubuntu 12.04.4 (32/64 bit) with g++-4.6.3
- CentOS/RHEL 6.7 (64-bit) with g++-4.4.7
- OS X Yosemite 10.10.4 with Xcode 6.4 and Apple LLVM version 6.1.0
- FreeBSD 10.1-RELEASE (64 bit) with clang-3.4.1
New user-visible features
-------------------------
- (build system) Python 3 is now supported by waf and test runner programs
- (wifi) 802.11ac Very High Throughput (VHT) physical layer modes are now
supported.
- (internet) permanent (static) ARP entries can be created for IPv4
- (network) SimpleChannel allows per-NetDevice blacklists, in order to do hidden terminal testcases.
- (documentation) TracedCallback function signatures now documented in Doxygen
Bugs fixed
----------
- Bug 730 - Enabling fragmentation at run-time breaks simulation
- Bug 1249 - doxygen comments on device-level SetMobility ()
- Bug 1482 - mesh module was producing fatal error with ASCII and netanim traces
- Bug 1557 - errors in function OpenFlowSwitchNetDevice::BufferFromPacket()
- Bug 1681 - m_lastNavStart is assigned twice continuously
- Bug 1736 - default dot11EDCATableMSDULifetime
- Bug 1901 - mesh module producing malformed pcaps
- Bug 1929 - TcpL4Protocol::Send must indicate the source address to routing (if known)
- Bug 1982 - AODV and mesh modules use random variables before seeds can be set
- Bug 2058 - TCP window update can shrink left edge of window
- Bug 2063 - FdNetDevice::SendFrom assert does not account for headers correctly
- Bug 2082 - Empirical RV fails if value provided in CDF function is negative
- Bug 2093 - MultiModelSpectrumChannel::GetDevice only works for 0-th index
- Bug 2096 - Wrong pcap information when MPDU aggregation is used
- Bug 2104 - Sequence Number passed to QosUtilsMapSeqControlToUniqueInteger instead of Sequence Control
- Bug 2108 - Erroneous implementation in InterferenceHelper
- Bug 2119 - Fix memory leaks in FdNetDevice test due to non-executed events
- Bug 2124 - UdpSocketImpl::ShutdownRecv doesn't stop the Ipv[4,6]EndPointDemux
- Bug 2125 - subclasses must chain up to base class NotifyNewAggregate
- Bug 2126 - LrWpanNetDevice silently accepts no mobility on the node
- Bug 2127 - Scheduler benchmark utility works in first run only
- Bug 2130 - Allow SimpleChannel to simulate hidden terminals
- Bug 2132 - TcpL4Protocol sends a bad-formatted RST packet
- Bug 2135 - TCP doesn't honor the socket's output interface
- Bug 2136 - The usage of tid in wifi and wave module shall be "if (tid > 7)" rather than "if (tid >= 7)"
- Bug 2138 - SimpleNetDevice could send overlapped packets
- Bug 2143 - maybe-uninitialized warning
- Bug 2146 - bug in WAVE channel coordination
- Bug 2148 - Ipv6Interface::SetUp doesn't re-create the Link-Local addresses
- Bug 2153 - Incorrect power limits in wifi power control algorithms
- Bug 2154 - Incorrect power calculation in wifi power adaptation examples
- Bug 2156 - Duplicate packets when using two level aggregation
- Bug 2157 - OpenFlowSwitchNetDevice::BufferFromPacket setting eth_type incorrectly
- Bug 2158 - OpenflowSwitchNetDevice flooding bug
- Bug 2165 - server replies to SYN (with option TS) with a SYNACK (with option TS) also if the attribute Timestamp is false
- Bug 2166 - SteadyStateRandomWaypointMobilityModel directs the node to the ground
- Bug 2170 - AnimationInterface outputs improperly formed XML
- Bug 2171 - power-adaptation-distance.cc:202:22: error: call to 'pow' is ambiguous
- Bug 2173 - WifiInformationElement::DeserializeIfPresent attempts to read beyond the end of buffer
- Bug 2174 - m_rWnd not updated when segments without ACK are received
- Bug 2177 - Ipv6ExtensionFragmentHeader length is initialized to a wrong value.
Known issues
------------
In general, known issues are tracked on the project tracker available
at http://www.nsnam.org/bugzilla/
Release 3.23
============
Availability
------------
This release is available from:
http://www.nsnam.org/release/ns-allinone-3.23.tar.bz2
Supported platforms
-------------------
This release has been tested on the following platforms:
- Ubuntu 15.04 (64 bit) with g++-4.9.2
- Fedora Core 21 (64 bit) with g++-4.9.2
- Ubuntu 14.04 (64 bit) with g++-4.8.2
- Ubuntu 12.04.4 (32/64 bit) with g++-4.6.3
- CentOS/RHEL 6.6 (64-bit) with g++-4.4.7
- OS X Yosemite 10.10.3 with Xcode 6.3.1 and Apple LLVM version 6.1.0
- FreeBSD 10.1-RELEASE (64 bit) with clang-3.4.1
New user-visible features
-------------------------
- (network) CalculateTxTime has been declared obsolete.
CalculateBytesTxTime and CalculateBitsTxTime are to be used instead.
The return value is a Time, instead of a double.
- (mobility) Classes added for converting geographic to cartesian coordinates.
- (spectrum) TvSpectrumTransmitter models added to create television
transmitter(s) that transmit PSD spectrums customized by attributes such
as modulation type, power, antenna type, channel frequency, etc.
- (wifi) Several model improvements have been made. Access points now
establish BSSBasicRateSet for control frame transmissions. PLCP header
and payload reception have been decoupled for improved PHY modeling
accuracy. RTS/CTS with A-MPDU is now fully supported, and 802.11n
stations now support two-level aggregation.
Bugs fixed
----------
- Bug 1757 - RLC AM not using NACK_SN
- Bug 1974 - CalculateTxTime should return a Time, not a double
- Bug 1982 - AODV and mesh use random variables before seed can be set
- Bug 2004 - Wrong timeout calculation for 802.11n in WifiMac
- Bug 2008 - (lr-wpan) Crash if ending rx while status change is in progress
- Bug 2025 - (lr-wpan) Changing the channel doesn't affect the Tx params
- Bug 2034 - (lr-wpan) CSMA-CA BackoffPeriod is too short
- Bug 2054 - TCP window update can shrink the Left Edge of the window
- Bug 2066 - A-MPDU reception should check for successful preamble
- Bug 2067 - TCP performance when advertised window exceeds sender buffer size
- Bug 2070 - Wrong report of Packets and Bytes stored in CoDeL
- Bug 2073 - NDisc cache entries update timer might be stuck in a loop
- Bug 2075 - A-MPDU using RTS/CTS behaves wrongly when MaxSsrc is reached
- Bug 2076 - TCP MinRTO Attribute is not actually used
- Bug 2077 - Icmpv6L4Protocol::HandleDestinationUnreachable must check the packet size, not its serialized size
- Bug 2079 - mcs variable in ht-wifi-network example is confusing
- Bug 2082 - Empirical RV fails if the value provided in the CDF member function is negative
- Bug 2083 - BridgeNetDevice may send corrupted packets
- Bug 2087 - Waf fails to build ns-3 if the path contains accented characters
- Bug 2090 - (rip-ng) Routes may be added twice on interface activation
- Bug 2093 - MultiModelSpectrumChannel::GetDevice only works for 0-th index
- Bug 2095 - (wimax) Wrong values in default-traces.h for 16 QAM 3/4
- Bug 2097 - ACKs should be sent using legacy rates and preambles in 802.11n
- Bug 2103 - Ipv[4,6]RoutingHelper::PrintRoutingTableAll[At,Every] hangs if a node doesn't have IP
Known issues
------------
In general, known issues are tracked on the project tracker available
at http://www.nsnam.org/bugzilla/
Release 3.22
============
Availability
------------
This release is available from:
http://www.nsnam.org/release/ns-allinone-3.22.tar.bz2
Supported platforms
-------------------
This release has been tested on the following platforms:
- Fedora Core 21 (64 bit) with g++-4.9.2
- Ubuntu 14.10 (32 bit) with g++-4.9.1
- Ubuntu 14.04 (64 bit) with g++-4.8.2
- Ubuntu 12.04.4 (32/64 bit) with g++-4.6.3
- CentOS/RHEL 6.6 (64-bit) with g++-4.4.7
- OS X Yosemite 10.10 with Xcode 6.1.1 and clang-600.0.56
- FreeBSD 10.1-RELEASE (64 bit) with clang-3.4.1
New user-visible features
-------------------------
- (wifi) Support for MPDU aggregation has been added to the wifi model,
as well as a number of related example programs.
- (wifi) Added two combined power and rate control mechanisms to the
wifi module. The new mechanisms, PARF and APARF, are the first in the
wifi module to jointly control transmission power and data rate. Two use
case examples (PowerAdaptationDistance and PowerAdaptationInterference)
and a test case have also been added.
- (lte) In previous releases of the LTE module, the bearer release
functionality was only partially supported. As an enhancement, a
complete release bearer procedure is now implemented, which can be
invoked by calling the new helper method
LteHelper::DeActivateDedicatedEpsBearer(). The related output can be
seen through the stats collected at different layers like PDCP, RLC,
MAC, PHY. To support this implementation, an example and test suite is
added within the LTE module examples and tests folder.
- (wave) Additional support has been added for WiFi-based vehicular networks,
including the channel-access coordination features of IEEE 1609.4 and a
comprehensive VANET routing example that includes a Basic Safety
Message (BSM) packet generator application and associated statistics
counters. Together, these allow users to evaluate the performance effects
in a VANET of varying transmission and channel properties (e.g., packet
rate, message size, transmit power, propagation loss model, impact of
routing protocol traffic, etc.).
- (internet) It is now possible to print the Neighbor Cache (ARP and NDISC)
by using the RoutingProtocolHelper
- (stats) A new TimeProbe class has been added to hook the data collection
framework to traced values emitting Time objects
- (documentation) the callback function signatures for all TraceSources
is documented in Doxygen
- (utils) print-introspected-doxygen.cc has had several enhancements;
use -h to read the usage message for details.
- (core) TracedValue and TracedCallback function signatures are now documented,
which required changing the TypeId::AddTraceSource API.
Bugs fixed
----------
- Bug 1405 - RttEstimator improvements
- Bug 1551 - NS_LOG_COMPONENT_DEFINE inside or outside of ns3 namespace?
- Bug 1726 - WiFi Minstrel rate control algorithm doesn't save state
- Bug 1734 - TcpSocketBase produces spurious delayed ACKs
- Bug 1758 - Yans and Nist error rate models for 5/6 code rate 802.11n HT
- Bug 1770 - mesh test and example crash for 32-bit optimized builds
- Bug 1774 - compute signal power around channel, not across whole band, and fix LrWpanHelper to add a default PropagationDelayModel
- Bug 1791 - TCP Endpoint never deallocates when closing
- Bug 1801 - Setting Wi-Fi timing parameters through WifiMac attributes (documentation fix)
- Bug 1906 - 802.11n PHY configuration for 2.4GHz and 5GHz devices
- Bug 1957 - UdpSocketImpl is stuck after a Close()
- Bug 1968 - Missing supported 802.11n HT rates in the WifiPhy constructor
- Bug 1969 - Support short guard interval durations in 802.11n
- Bug 1970 - Missing NotifyAckTimeoutStartNow in MacLow::StartDataTxTimers
- Bug 1971 - 802.11n at 2.4 GHz should include a signal extension duration
- Bug 1972 - CommandLine duplicate argument handling: documentation updated.
- Bug 1983 - FlowMonitor returns containers copies instead of references.
- Bug 1986 - test result divergence for lte-frequency-reuse test
- Bug 1991 - PcapFileWrapper::CaptureSize attribute (snaplen) has no effect.
- Bug 1995 - avoid multiple definitions of PI
- Bug 1996 - RSRQ calculation: misleading variable names
- Bug 1997 - Fix PlotProbe() documentation and usage for GnuplotHelper and FileHelper
- Bug 2002 - Hardcoded include paths cause breakage
- Bug 2011 - Default Speed attribute in ConstantSpeedPropagationDelayModel
- Bug 2016 - Radvd do not consider the SendAdvert option and don't reply to RS
- Bug 2020 - Erroneous MCS field in 802.11n PCAP files
- Bug 2021 - Missing const qualifier in TopologyReader::Link::Attributes{Begin,End}()
- Bug 2026 - 802.11n Ness parameter badly set for data frames
- Bug 2027 - Calculation of HT training symbol duration does not accurately follow 802.11n standard
- Bug 2028 - remove unnecessary Time to double conversions in Wifi models
- Bug 2029 - new CQI generation approach fix
- Bug 2030 - provide default values for WifiTxVector
- Bug 2037 - HT capabilities may print bogus chars
- Bug 2038 - Stop method does not stop next wave in WaveformGenerator
- Bug 2042 - LTE a3-rsrp-handover-algorithm.cc: error: overflow in implicit constant conversion
- Bug 2043 - print-introspected-doxygen crashes when some modules are disabled
- Bug 2044 - Buffer::Iterator::ReadNtohU16() and ReadNtohU32() not implemented correctly
- Bug 2045 - Missing NS_OBJECT_ENSURE_REGISTERED in TcpTxBuffer and TcpRxBuffer
- Bug 2046 - set Block Ack timeout when SetStandard is called
- Bug 2047 - Ipv6EndPointDemux::Lookup may crash
- Bug 2049 - CQI feedback should always use the same calculation method
- Bug 2053 - In tcp-socket-base.cc, NotifyDataSent incorrectly called with retransmits
- Bug 2055 - TCP TxBuffer and RxBuffer traces don't work
- Nix-vector routing implementation now uses a lazy flush mechanism,
which dramatically speeds up the creation of large topologies.
Known issues
------------
In general, known issues are tracked on the project tracker available
at http://www.nsnam.org/bugzilla/
Release 3.21
============
Availability
------------
This release is available from:
http://www.nsnam.org/release/ns-allinone-3.21.tar.bz2
Supported platforms
-------------------
- Fedora Core 20 (32/64 bit) with g++-4.8.2
- Ubuntu 14.04 (32/64 bit) with g++-4.8.2
- Ubuntu 12.04.4 (64 bit) with g++-4.6.3
- Ubuntu 10.04.4 LTS (64 bit) with g++-4.4.3
- CentOS/RHEL 6.5 (64-bit) with g++-4.4.7
- OS X Mavericks 10.9 with Xcode 5.1.1 and clang-503.0.40
- FreeBSD 9.2-RELEASE (64 bit) with clang-3.3
New user-visible features
-------------------------
- The LTE module now supports the transport of the S1-U, X2-U and X2-C
interfaces over emulated links via the new helper class EmuEpcHelper.
- CommandLine can now provide a shorthand argument name for any
Attribute.
- Implemented support for Frequency Reuse algorithms in LTE module, as the
outcome of GSoC 2014 project.
The project also includes several sub-features, such as:
- implementation of Downlink Power Control
- implementation of Uplink Power Control
- new DL-CQI generation approach, which increases throughput if FR algorithms
are used
- seven options of Frequency Reuse algorithms: LteFrNoOpAlgorithm,
LteFrHardAlgorithm, LteFrStrictAlgorithm, LteFrSoftAlgorithm,
LteFfrSoftAlgorithm, LteFfrEnhancedAlgorithm, LteFfrDistributedAlgorithm
- updated RadioEnvironmentMapHelper. Now RadioEnvironmentMap can be generated
for Data or Control channel and for specified RbId, what is helpful when
using FR algorithms
- Added a CoDel queue model. CoDel queues measure and control the queue
traversal delay. The ns-3 implementation is a port of the Linux
implementation.
- Added support for TCP timestamp and window scale options, and added
ability to trace the TCP slow start threshold value.
- SimpleNetDevice and SimpleChannel (used for adding basic link effects
for testing of higher-layer protocols) have been extended to support
the option of broadcast or PointToPoint link semantics. The bandwidth
and link delay can be constrained, and it uses an output queue.
- SimpleNetDevice and SimpleChannel can be installed in a node through
a new helper: SimpleNetDeviceHelper.
- Implemented new PacketSocketServer and PacketSocketClient applications.
The primary use is in tests, to avoid using the ones from the
application module that also bring in a dependency on the internet module.
Bugs fixed
----------
- Bug 1673 - Config::Set/Connect does not search for attributes in parent class
- Bug 1762 - UE stuck in IDLE_CONNECTING because RRC CONN REQ is not transmitted
- Bug 1811 - basic traffic generator for network module
- Bug 1824 - L4 protocol sockets should support BindToNetDevice over IPv6
- Bug 1831 - TcpSocket SlowStartThreshold is not a TraceSource
- Bug 1851 - WifiRadioEnergyModel energy consumption values are taken from a 802.15.4 chip
- Bug 1854 - std::out_of_range Problem