Ryu¶

Página do projeto¶

www.osrg.net/ryu

• Network opearting system
• OVS, openflow switch
• python
• www.osrg.net/ryu

Sobre o código¶

Linguagem¶

Python 2.7

Licença¶

Apache 2.0 license

Suporte a versões do OpenFLOW¶

• 1.0 with Nicira Extensions
• 1.2
• 1.3

Requisitos¶

• ambiente Python 2.7

Independência de linguagem de programação¶

Somente Python 2.7

Modularidade¶

???

Repositório¶

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

Recursos básicos do controlador¶

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

Aplicações¶

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

• cbench.py: cbench: specify OF1.0
• client.py: app/client: update for quantum->neutron change
• conf_switch_key.py: ryu/app/conf_switch_key: fix a comment
• gre_tunnel.py: appease pep8
• ofctl_rest.py: ryu/app/ofctl_rest: add of1.3 support
• quantum_adapter.py: app/quantum_adapter: Lazily initialize neutron client
• rest.py: app/rest: add requirements to path component
• rest_conf_switch.py: log-cleanup: remove an unused logger instance
• rest_firewall.py: rest_firewall: improve REST response
• rest_nw_id.py: app/rest_nw_id: add port type for reserved port and vport-gre
• rest_quantum.py: fix typos in comments
• rest_router.py: rest_router: make pep8 comfortable
• rest_topology.py: topology: Add REST API
• rest_tunnel.py: rest_tunnel: fix comment typos
• simple_isolation.py: use ofproto.OFP_NO_BUFFER in some places
• simple_switch.py: simple_switch: simplify
• simple_switch_12.py: simple_switch_12: reduce difference from simple_switch_13
• simple_switch_13.py: add simple learning switch app for OF1.3
• simple_switch_lacp.py: add LACP application
• simple_vlan.py: simple_vlan.py: race condition
• tunnel_port_updater.py: sweep the tree to change from gevent to ryu.lib.hub
• wsgi.py: Switch how to call the API of Routes for every version

Testes¶

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

• app: To specify a context of a controller from WSGIApplication#register()
• lib: test_addrconv: add more test
• ofproto: ofproto: remove unused definitions
• packet: packet.bgp: parse/serialize FOUR OCTET AS NUMBER capability
• sample: discard sample/test_simple_switch because of unittest fail

Disponibilidade nas distribuições GNU/Linux¶

Pode ser instalado com o gerenciador 'pip'.

Último release / commit¶

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

Documentação¶

Documentação oficial¶

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

Tutoriais¶

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

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)

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

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

1. to nova-network: create netork
2. nova network --> quantum server: create net
3. quantum server --> Ryu: network <uuid>, <tunnel key>
4. quantum server --> nova network: <uuid>
5. nova network --> linux_net driver: plug
6. linux_net driver --> OVS: create gw-xxx
7. linux_net driver --> quantum server: tentant id, network id, dp id, port, mac
8. quantum server --> Ryu: network id, dp id, port, mac
9. ryu --> OVS: set flow entryies

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

1. to nova compute: create instance
2. nova compute --> quantum server: create port
3. quantum server --> nova compute: uuid
4. nova compute --> VIF driver: plug
5. VIF driver --> OVS: create tap-xxx
6. VIF driver --> quantum server: (tenant_id, dp_id, port, mac)
7. quantum server --> Ryu: (network_id, dp_id, port, mac)
8. Ryu --> OVS: set flow entryies

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

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

Quem usa¶

Quem está por trás¶

Outras características¶