h1. OpenFLOW Controllers

Características a analisar: 

* linguagem
* licença
* tamanho do pacote
* features
* documentação
* exemplos
* versão do OpenFLOW


h2. OpenFLOW

* protocol between the controller and the switches
* set of operations on the switches

* http://routingfreak.wordpress.com/2013/03/01/openflow-controllers-whats-missing-in-routing-protocols-today/
* http://en.wikipedia.org/wiki/OpenFlow
* http://www.openflow.org/
* http://www.openflow.org/wp/openflow-components/
* http://bigswitch.com/blog/2012/12/20/why-openflow-hardware-control-matters-in-the-data-center




h2. Controladores

h3. Tabela Resumo:

|_. Nome|_. Linguagem|_. Licença|_. Tamanho do Pacote                              |_. Features              |_. URL|_. Versão do OpenFlow |
|*Nox*    |C++         |GPL V3    |>. 258 Kb (Fonte)                                 | Provides a C++ OpenFlow 1.0 API
    Provides *fast, asynchronous IO*
    Includes sample components for:
        *Topology discovery*
        *Learning switch*
        *Network-wide switch* |http://www.noxrepo.org/pox/documentation/| 1.0 |
|*Pox*    |Python      |GPL V3    |>. 1.1 Mb (Fonte)                                 | “Pythonic” OpenFlow interfacePOX Performance Graph
*Reusable sample components* for *path selection*, *topology discovery*, etc.
“Runs anywhere” – Can *bundle with install-free PyPy runtime* for easy deployment
Specifically targets *Linux*, Mac OS, and Windows
Supports the *same GUI and visualization tools as NOX*
*Performs well compared to NOX* applications written in Python          |http://www.noxrepo.org/nox/documentation/| 1.0|
|*Beacon* |Java        |GPL v2    |>. 12.2 Mb (Fonte) 17 Mb (Binários + Dependências)|    *Stable* - Beacon has been in development since early 2010, and has been used in several research projects, networking classes, and trial deployments. Beacon currently powers a 100-vswitch, 20-physical switch experimental data center and has run for months without downtime.
    *Cross-platform* - Beacon is written in Java and runs on many platforms, from high end multi-core Linux servers to Android phones.
    *Dynamic* - Code bundles in Beacon can be started/stopped/refreshed/installed at runtime, without interrupting other non-dependent bundles (ie replace your running Learning Switch application without disconnecting switches).
    *Rapid Development* - Beacon is easy to get up and running. Java and Eclipse simplify development and debugging of your applications.
    *Fast* - Beacon is multithreaded, check out performance benchmarks.
    *Web UI* - Beacon optionally embeds the Jetty enterprise web server and a custom extensible UI framework
    *Frameworks* - Beacon builds on mature Java frameworks such as Spring and Equinox (OSGi)           |https://openflow.stanford.edu/display/Beacon/Guides|1.0|
|*Maestro* |Java        |LGPL v2.1    |>. 117 Kb (Binários) 262 Kb (Fonte) |*Developed in Java* (both the platform and the components) - Highly portable to various operating systems and architectures.
    *Multi-threaded* - Takes full advantage of multi-core processors. 
    Currently provides the control components for realizing either a learning switch network, or a routed network using OpenFlow switches.              |http://code.google.com/p/maestro-platform/wiki/MaestroTutorial|1.0|
|*Ryu* |Python        |Apache V2.0   |>. 12.2 Mb (Fonte) |*OpenStack supports Ryu*. You can create tens of thousands of isolated virtual networks without using VLAN. You manage virtual networks, OpenStack notifies of Ryu and Ryu configures OpenvSwitches properly.
    You can try Now. Ryu's *pre-configured VM image* file enables you to easily set up multi-node OpenStack environment.
    We try Ryu with *software OpenFlow Switch* (OpenvSwitch) and bunch of *hardware OpenFlow Switches*.|https://github.com/osrg/ryu/wiki|1.0, 1.2, 1.3 e Nicira Extensions|
|*Floodlight* |Java        |Apache V2.0   |>. 46 Mb (Fonte)| - Offers a *module loading system* that make it simple to extend and enhance.
    - *Support for OpenStack* cloud orchestration platform - *OpenStack Quantum plugin*.
    - *It is the core of 'BigSwitch' (BigSwitch open-sourced FloodLight)*.
    - *Easy to set up* with *minimal dependencies*.
    - Supports a broad range of *virtual- and physical- OpenFlow switches*.
    - Can handle *mixed OpenFlow and non-OpenFlow networks* – it can manage multiple “islands” of OpenFlow hardware switches.
    - Designed to be *high-performance* – is the *core of a commercial product from Big Switch Networks*.
    - *API REST*.
    - Enterprise class (production).
    - Floodlight VM*. It includes floodlight running by default and Mininet.
    - *Nos repositórios do Ubuntu*.
    - *Avior (GUI open-source). |http://www.projectfloodlight.org/documentation/|1.0|
|*BigSwitch*| java | closed-source | -- | - OpenStack
    - based on Beacon 
    - targets production networks
    - user-friendly cli | http://www.bigswitch.com/ | |
|*MUL*| C | GPLv2 | 16.2 MB (src) | - muli-threaded infrastructure
    - multi-level north bound interface for hooking up applications.
    - designed for performance and reliability (mission-critical networks).
    - core of a commercial controller from Kulcloud Networks 
    - Openstack Support through Quantum plugins | http://sourceforge.net/projects/mul/ | 1.0, 1.1, 1.2 |
|*Jaxon*| java | -- | 109 KB (src) | - NOX-dependent 
    - provides a thin interface with the NOX
    - possible to directly access from Java program to C native ones. | http://jaxon.onuos.org/ | -- |
|*NDDI-OESS*|??|Apache V2.0|??| -- set of programs
    - OESS provides sub-second circuit provisioning
    - automatic circuit failover
    - per-interface permissions
    - automatic per-VLAN statistics
    - simple and user friendly web-based user interface
    - web services API | http://code.google.com/p/nddi/wiki/README | 1.0|
|*NodeFlow*| javascript| MIT-License | ? | - provides an asynchronous library over JavaScript for server side programming which is perfect for writing network based applications (ones that don’t require an excessive amount of CPU).
    - Uses on OFLIB-NODE Library. | http://garyberger.net/?p=537 | 1.0|
|*Helios*| C | closed-source | ? | - targetting researchers
    - programmatic shell (integrated experiments) | http://www.nec.com/|1.0|
|*SNAC*| Python e C++ | GPLv3 | ? | - targets production networks
    - based on NOX 0.4 
    - flexible policy definition language
    - user-friendly interface (configuration + monitoring)| http://www.openflow.org/wp/snac/ |1.0|
|*HP VANSC*| ? | closed | ? | - dinamic control plane
    - full support for OpenFLOW protocol
    - Open API enable third part application | ? | ? |

|*IBM PNC*| ? | closed | ? | - unlimited virtual machine mobility
    - enterprise class (production)
    - automatically and continuous discovers network topology | ? | ? |



h3. Listas

* http://tech.saroscorner.com/2012/12/list-of-openflow-controllers-for-sdn.html


h3. BigSwitch

* closed-source
* based on Beacon 
* java
* targets production networks
* user-friendly cli


h3. floodlight

* http://www.projectfloodlight.org/floodlight/
* http://groups.geni.net/geni/wiki/OpenFlow/Controllers/Floodlight

* enterprise class (production)
* apache-licensed (open-source)
* support a broad range of OpenFLOW switches
* can manage multiple island of OpenFLOW switches
* the core of 'BigSwitch' (BigSwitch open-sourced FloodLight)
* fisical and virtual switches
* open community of developers
* simple to use
* java
* modular (simple to extend and enhance)
* minimal dependencies
* mixed OpenFLOW and non-OpenFLOW networks
* high performance
* support for OPENSTACK cloud orchestration platform
* (tem no repositório???)
* Floodlight VM (run mininet for tests)
* Examples at flood light site
* Avior (GUI open-source)

h3. POX

* python
* multi-platform
* research and education
* open-source

h3. NOX

* concurrent applications
* python and C++
* sample controller applications

h3. MUL

h3. Jaxon

h3. Trema

h3. Beacon

* java
* OSGI framework (openflow applications built on the platform to be started / stopped / refreshed / installed at runtime
* cross-platform
* modular
* "robusto"


h3. Maestro

* java
* extensible
* multi-threading
* target researchers
* open-source


h3. NDDI-OESS

h3. NodeFlow

h3. Ryu

* well-defined API
* NTT Labs (instituição por trás)


h3. OVS-Controller

h3. Helios

* C
* NEC (empresa que desenvolve)
* targetting researchers
* programmatic shell (integrated experiments)


h3. SNAC

* targets production networks
* based on NOX 0.4 
* python e C++
* flexible policy definition language
* user-friendly interface (configuration + monitoring)


h3. HP Virtual Application Networks SDN Controller

* dinamic control plane
* full support for OpenFLOW protocol
* Open API enable third part application


h3. IBM PNC (IBM Programmable Network Controller)

* unlimited virtual machine mobility
* enterprise class (production)
* automatically and continuous discovers network topology


h2. Hypervisor

To a controller: ordinary switch. To a switch: a controller. Must stay on top of switches and under the controller.

h3. FlowVisor

* transparent proxy between switches and controller
* slices of network
* network virtualization platform
* hypervisor
* isolate services at slices (groups?)

h2. Framework

h3. Trema

Trema is a full-stack, easy-to-use framework for developing OpenFlow controllers in Ruby and C.



h2. Guias

* http://searchsdn.techtarget.com/guides/OpenFlow-protocol-tutorial-SDN-controllers-and-applications-emerge



h2. Comparativos

* Nox, Nox D, Beacon, Maestro
http://www.openflow.org/wk/index.php/Controller_Performance_Comparisons