For details, please see the documentation under doc/ directory and make html (or make <format you prefer>). If you have any questions, suggestions, and patches, the mailing list is available at ryu-devel ML.

Ryu Official site is http://www.osrg.net/ryu/.

Ryu is an open-sourced Network Operating System (NOS) licensed under GPL v3. It's fully written in Python.

Ryu aims to provide a logically centralized control and well defined API that make it easy for operators to create new network management and control applications. Currently, Ryu supports OpenFlow protocol to modify the behavior of network devices.

We aim at the de facto OSS NOS implementation and NOS API.

Currently, Ryu is shipped with one control application for OpenStack network management L2 segregation of tenants without using VLAN. The application includes changes to OpenStack (nova, quantum ovs plugin, etc). We aim to merge Ryu into OpenStack mainline.

The project goal is to develop an OSS Network Operating System that has high quality enough for use in large production environment in code quality/functionality/usability.

• OpenFlow Protocol version 1.2 (right after the spec release)
• The better API for control applications
• Cluster support
• ...too many for here.

Get source code:

% git clone git://github.com/osrg/ryu.git

Then just type:

% cd ryu; python ./setup.py install

and run ryu-manager command which is installed. Then set up your openflow switch (hardware switch or OVS) to connect the ip address and port to which ryu-manager is listening. If you want to use it with Openstack (nova and quantum with ovs plugin), please refer detailed documents under doc/ directory.

• python-setuptools
• python-gevent >= 0.13
• python-gflags
• python-sphinx

• OHMURA Kei <ohmura.kei at lab.ntt.co.jp>
• MORITA Kazutaka <morita.kazutaka at lab.ntt.co.jp>
• Isaku Yamahata <yamahata at valinux co jp>
• FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>