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This page summarizes the release planning for ns-3.21. The ns-3 release process is listed here and here.

The release manager is Tom Henderson.

Release schedule

ns-3.21 is planned for September 17, 2014. New feature code should be ready for merge by no later than 5 September. An initial release candidate should be available by 12 September.

Release candidates

The first release candidate (rc1) was posted on Sept. 13. While this is considered to be nearly final and complete, the following minor issues are being addressed:

  • platform-specific (OS X) issue with one of the LTE tests
  • need more robust way for including fd-net-device module in LTE wscript (for FreeBSD)
  • formatting the new CoDel chapter in the model library documentation
  • add some documentation to the ns-3 tutorial regarding Simulator::Stop()

A second release candidate is planned for Mon. Sept 15.


ns-3.21 will be packaged as a source tarball as before: ns-allinone-3.21.tar.bz2.

The tarball will contain:

  • Latest version of pybindgen
  • Latest version of netanim
  • ns-3.21
  • bake

where bake is used to fetch optional ns-3 components, including DCE.

A patch from ns-3.20 to ns-3.21 will also be posted.

Release platforms

We usually try to keep pace with the latest popular versions of Linux, OS X, and FreeBSD. For the ns-3.21 release, we plan to support the following systems and compilers:

  • OS X 10.9 Mavericks with Xcode 5.1
  • Ubuntu 14.04 (gcc-4.8)
  • Fedora 20 (gcc-4.8)
  • Debian 7 (gcc-4.9)
  • Ubuntu 10.04 LTS (gcc-4.4)
  • Ubuntu 12.04 LTS (gcc-4.6)
  • Centos 6.4 (gcc-4.4)
  • FreeBSD 9.3 (clang 3.3)

New features

Pending new features:


Software maintenance issues

Bugs or issues in ns-3 core

Also Possible

Bugs in models being worked by someone


Documentation improvements

  • improve documentation on linking ns-3 with other libraries (Tom Henderson)
    • Not likely to be fully fixed for ns-3.21 but may take a stab at this, time permitting
  • Wifi documentation patch from Sebastien Deronne (Daniel L)
  • Fix tutorial first.cc and documentation to explicitly call out the need for StopApplication() (Tommaso and/or Tom)