Announcing Mininet 2.2.0 !

We are pleased to announce Mininet 2.2.0! This release provides a number of bug fixes as well as several new features, including:

  • Improved OpenFlow 1.3 support

    • mn --switch ovs,protocols=OpenFlow13 starts OVS in 1.3 mode
    • -w installs 1.3-compatible Wireshark dissector using Loxigen
      • -y installs the Ryu 1.3-compatible controller
  • A new node library, and new Node types including LinuxBridge, OVSBridge, LinuxRouter (see examples/) and NAT

  • Easier LAN/internet connectivity from Mininet hosts

    • mn --nat will semi-automatically connect a Mininet network to your LAN using NAT, solving the “why can’t I ping Google?” problem.

      Warning: By default this will reroute local traffic originating at your Mininet server or VM and destined for Mininet’s IP subnet ( by default) to the Mininet network, which can break connectivity if you are using addresses in the same range in your LAN. You can change this range using the --ipbase option.

  • An improved MiniEdit GUI (examples/ - thanks to Gregory Gee

  • Support for multiple --custom arguments to mn

    mn --custom, --topo mytopo --switch myswitch

  • Experimental cluster support - consult the documentation for details - as well as examples/ and an experimental --cluster option for topologies built with the default Host and OVSSwitch classes:

    mn --cluster localhost,server1,server2,server3 --topo tree,4,4

Note that examples contain experimental features which might “graduate” into mainline Mininet in the future, but they should not be considered a stable part of the Mininet API!

How to get it

The easiest way to get started with Mininet is to download a VM image. See for details.

The latest Mininet source code is available on github and also via

Additional information on the Mininet 2.2.0 release may be found in the release notes and on

Mininet is an open source project, and we are grateful to our many code contributors, bug reporters, and active users who continue to help make Mininet a useful system with a friendly and helpful community!

Have fun with Mininet!

Mininet 2.2.0 Core Team:
Bob Lantz, Brian O’Connor, Cody Burkard
Open Networking Laboratory