h1. Ryu

h2. Página do projeto

www.osrg.net/ryu

* Network opearting system
* OVS, openflow switch


h2. Sobre o código


h3. Linguagem

Python 2.7


h3. Licença

Apache 2.0 license


h3. Suporte a versões do OpenFLOW

* 1.0 with Nicira Extensions
* 1.2
* 1.3


h3. Requisitos

* ambiente Python 2.7
** python-gevent python-routes python-webob python-paramiko

h3. Independência de linguagem de programação 

Comunicação por mensagens, então, pode conversar com qualquer aplicativo que implemente essas mensagens.


h3. Modularidade

???


h3. Repositório

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


h3. Recursos básicos do controlador

* GRE tunneling
* VLAN support
* IPv6
* topology discovery
* MAC based segregation


h3. Aplicações

https://github.com/osrg/ryu/tree/master/ryu/app

* cbench.py
* client.py
* conf_switch_key.py
* gre_tunnel.py
* ofctl_rest.py
* quantum_adapter.py
* rest.py: app/rest
* rest_conf_switch.py
* rest_firewall.py
* rest_nw_id.py
* rest_quantum.py
* rest_router.py
* rest_topology.py
* rest_tunnel.py
* simple_isolation.py
* simple_switch.py
* simple_switch_12.py
* simple_switch_13.py
* simple_switch_lacp.py
* simple_vlan.py
* tunnel_port_updater.py
* wsgi.py


h3. Testes

https://github.com/osrg/ryu/tree/master/ryu/tests

* app
* lib
* ofproto
* packe
* sample


h3. Disponibilidade nas distribuições GNU/Linux 

Pode ser instalado com o gerenciador 'pip'.


h3. Último release / commit

* Aplicações: "a month ago"
* Testes: "a day ago"
* Core: "a day ago"



h2. Documentação


h3. Documentação oficial

http://ryu.readthedocs.org/en/latest/index.html


h3. Tutoriais

https://github.com/osrg/ryu/wiki/OpenFlow_Tutorial


h2. Suporte junto ao OpenStack

Quantum Ryu plugin. VM pré-configurada para testar OpenStack + Ryu.

https://github.com/osrg/ryu/wiki/OpenStack

* Flat networks regardless of the underlying physical network
* Scalable multi-tenant isolations
** tunneling based isolations
** VLAN does not scale larger than 4096
** do not need high-end switches
* Future items:
** integration with quantum IPAM and L3 API
** firewall
** virtual network <--> physical network
** distributed controllers (redundancy)


h3. Communication

'nova requests quantum-server for network configuragion'

OVS <--> Ryu: openflow

Ryu agent <--> Ryu: REST API

Quantum server <--> Ryu: REST API

Ryu agent <--> Quantum db: db access

VIF driver <--> quantum: Quantum API
linux_net driver <--> server: Quantum API


h3. Network Creation (network-node = nova-network + linux_net driver + OVS)

# to nova-network: create netork
# nova network --> quantum server: create net
# quantum server --> Ryu: network <uuid>, <tunnel key>
# quantum server --> nova network: <uuid>
# nova network --> linux_net driver: plug
# linux_net driver --> OVS: create gw-xxx
# linux_net driver --> quantum server: tentant id, network id, dp id, port, mac
# quantum server --> Ryu: network id, dp id, port, mac
# ryu --> OVS:  set flow entryies


h3. Instance creation (compute-node = nova compute + VIF driver + OVS)

# to nova compute: create instance
# nova compute --> quantum server: create port
# quantum server --> nova compute: uuid
# nova compute --> VIF driver: plug
# VIF driver --> OVS: create tap-xxx
# VIF driver --> quantum server: (tenant_id, dp_id, port, mac)
# quantum server --> Ryu: (network_id, dp_id, port, mac)
# Ryu --> OVS: set flow entryies


h3. Node boot up (compute/network-node = OVS + Ryu agent + ryu_v2.ini)

# ryu_v2.ini --> Ryu agent: get ip address
# Ryu agent -->  quantum db: register (dp_id, ip_address)
# quantum db --> Ryu agent: get list of (dp_id, ip_address, and polling)
# Ryu agent --> OVS: create vport_grc to ip address
# Ryu agent --> Ryu: register (dp_id, port_id, remote dp_id)


h2. Quem usa

???


h2. Quem está por trás 

NTT Lab


h2. Outras características