Ns-3.21

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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 10 September.

Packaging

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:

• Self-Delimiting Numeric Values (https://codereview.appspot.com/97540043/)
  • Status: In final code review
  • Update: Proposing to hold past release; code review issues still not addressed
• TCP options code from SOCIS TCP project (including window scale and timestamps)
  • Code review issue: https://codereview.appspot.com/110860043/
  • Update: A repo (http://code.nsnam.org/repositories/tomh/ns-3-dev-tcp-options-for-merge) is staged for final review; a few minor issues are being worked out for Friday
  • RttEstimator improvements will slip until ns-3.22
• (enhancement) Add propagation delay capability to SimpleChannel (for testing purposes)
  • code review issue: https://codereview.appspot.com/132870043/
• CoDel queue support (from GSoC bufferbloat project)
  • Update: A repo (http://code.nsnam.org/repositories/tomh/ns-3-dev-codel-for-merge) is staged for final review
  • FQ-CoDel and SFQ-CoDel will slip until ns-3.22
• Energy harvesting model
  • Code review issue: https://codereview.appspot.com/103750047/
  • Update: Cristiano has updated this and it appears ready for merging
• LTE FFR models from GSoC project
  • Code review issue: https://codereview.appspot.com/130130043/
  • Update: Piotr has created a staging repo for final merge: http://code.nsnam.org/pgawlowicz/ns-3-dev/

WiFi-related:

• Wifi Sleep mode
  • Update: Stefano has created a final patch (emailed offlist), ready for merge with Cristiano's energy harvesting patch
• MPDU aggregation
  • Will slip to next release
• new VANET example
  • Update: Scott has updated the issue this week; it needs review and possible checkin

Software maintenance issues

• Remove emu module from codebase
• Mesh test crashes for certain configurations
• Time arithmetic consistency
• Wstrict-overflow and gcc-4.9

Bugs or issues in ns-3 core

TBD

Bugs in models to fix

TBD

Documentation improvements

• improve documentation on linking ns-3 with other libraries

Others TBD.