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Sebastien Goasguen,
July 24th 2013
#OSCON @sebgoa
SDN: Adding Network
Agility to the Cloud
Outline
Introduction to SDN
Controllers and Switches
Quick start demo of OpenDaylight
SDN in Cloud Platforms
My SDN experience
~March 2012
Elastic IP and Security Group in
Opennebula
Using NOX Open flow controller
http://blog.openn...
My SDN experience
~Summer 2013
Google Summer of Code project
Xen/XCP support for native GRE controller
in Apache CloudStac...
Software Defined Networking
SDN: Adding Network Agility to the Cloud #oscon
What is SDN ?
https://www.opennetworking.org/competition
What is SDN ?
https://www.opennetworking.org/sdn-resources/sdn-library/whitepapers
SDN:
A new network architecture that abstracts
the physical network to provide:
• Automation
• Dynamic provisioning
In ord...
Why ?
Fair use of images
Because
Fair use of images
Architecture
https://www.opennetworking.org/sdn-resources/sdn-definition
Software Defined Networking
• Enable innovation, experimentation,
optimization and customization of networks
• Move contro...
OpenFlow
• Leading SDN protocol
• Decouples control and
data plane by giving a
controller the ability
to install flow rule...
OpenFlow Protocol
OpenFlow rules can drop, rewrite, forward packets
http://www.openflow.org/wp/documents/
Switch
Port
MAC
...
OF scalability ?
• Central Logical
controller not a single
point of failure
• ONOS to be Open
Sourced in the ~fall
• Scale...
“SDN” Timeline
Feb 2011: OF v 1.1
Dec 2011: OF v 1.2
Feb 2012: Floodlight project
April 2012: ONF talk by Google
July 2012...
GENI
http://www.geni.net
http://www.openflow.org/wp/tag/demo/
http://groups.geni.net/geni/wiki/GENIRacksHome
“GENI is a vi...
Controllers and Switches
SDN: Adding Network Agility to the Cloud #oscon
OF Controllers and more …
• Several controllers out there (NOX,
POX,Trema, Beacon…)
http://yuba.stanford.edu/~casado/of-sw...
OpenVSwitch
• “Open vSwitch is a
production quality,
multilayer virtual
switch licensed under
the open source
Apache 2.0 l...
e.g OVS rate limiting
• Can enforce QoS with rate limiting controls
• ovs-vsctl set Interface tap0 ingress_policing_rate=1...
e.g OVS VLAN tagging
• ovs-vsctl add-br br0
• ovs-vsctl add-port br0 eth0
• ovs-vsctl add-port br0 tap0 tag=1
• ovs-vsctl ...
e.g OVS and GRE tunnels
No Cookbook on OVS page
ovs-vsctl add-port br1 gre1 -- set interface gre1 type=gre
options:remote_...
OVS and Openflow
Point OVS switches to an OF controller:
$ovs_vsctl set-controller br0 tcp 192.168.1.33:6633
Install rules...
Switch Light, Indigo (IVS)
http://www.projectfloodlight.org/indigo/
OpenDaylight
http://www.opendaylight.org
OpenDaylight Demo ?
SDN in Cloud Platforms
SDN: Adding Network Agility to the Cloud #oscon
OpenNebula
• Supports VLAN tagging
and rate limiting through
“hooks” that call
ovs_vsctl
• Scripts executed on an
hypervis...
Quantum == Neutron
https://wiki.openstack.org/wiki/Neutron
Thanks to @hui_kenneth for diagram
Quantum == Neutron
https://wiki.openstack.org/wiki/Neutron
CloudStack Network API
CloudStack Nicira NVP Support
• By Hugo Trippaers
@Spark404,
Schuberg Philis
• Isolated Networks in
advanced Zone 4.0+
• L...
CloudStack + Nicira NVP
Insert Presentation Title Here
CloudStack SDN Plugins
Thanks to @spark404 for table
Conclusions
• Network abstractions to decouple from the
physical network is the last leg of Cloud
• SDN provides an archit...
Get Involved with Apache
CloudStack
Web: http://cloudstack.apache.org/
Mailing Lists: cloudstack.apache.org/mailing-lists....
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SDN: Network Agility in the Cloud

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A presentation on Software Defined Networking, its concepts and application in cloud computing. I gave this presentation at OSCON 2013 in Portland: http://www.oscon.com/oscon2013/public/schedule/detail/31391. It starts with an introduction about SDN and some key concepts from the whitepaper at the Open Networking Foundation (ONF), I explain how OpenFlow and SDN differ, openflow being a standard protocol to control network devices. I then go on to review the many controllers out there and introduce a few key ones like floodlight, opendaylight, nicira. I give an overview of SDN integration in cloudplatform; opennebula, openstack and cloudstack and then gave a quick demo of the OpenDayLight controller.

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SDN: Network Agility in the Cloud

  1. 1. Sebastien Goasguen, July 24th 2013 #OSCON @sebgoa SDN: Adding Network Agility to the Cloud
  2. 2. Outline Introduction to SDN Controllers and Switches Quick start demo of OpenDaylight SDN in Cloud Platforms
  3. 3. My SDN experience ~March 2012 Elastic IP and Security Group in Opennebula Using NOX Open flow controller http://blog.opennebula.org/?p=2695 http://code.google.com/p/onenox/
  4. 4. My SDN experience ~Summer 2013 Google Summer of Code project Xen/XCP support for native GRE controller in Apache CloudStack http://ngtuna.blogspot.com
  5. 5. Software Defined Networking SDN: Adding Network Agility to the Cloud #oscon
  6. 6. What is SDN ? https://www.opennetworking.org/competition
  7. 7. What is SDN ? https://www.opennetworking.org/sdn-resources/sdn-library/whitepapers
  8. 8. SDN: A new network architecture that abstracts the physical network to provide: • Automation • Dynamic provisioning In order to enable business innovation SDN: Adding Network Agility to the Cloud #oscon
  9. 9. Why ? Fair use of images
  10. 10. Because Fair use of images
  11. 11. Architecture https://www.opennetworking.org/sdn-resources/sdn-definition
  12. 12. Software Defined Networking • Enable innovation, experimentation, optimization and customization of networks • Move control of the network to software. i.e Programmable network • Virtualize the network • Beyond traditional network virtualization ala VPN and VLAN • Enables overlays with control at the edges • Existing Vendor-agnostic, standard protocol for control: OpenFlow
  13. 13. OpenFlow • Leading SDN protocol • Decouples control and data plane by giving a controller the ability to install flow rules on switches. • Hardware or software switches can use OpenFlow • Spec driven by ONF • Google achieved 95% utilization of WAN backbone by using SDN
  14. 14. OpenFlow Protocol OpenFlow rules can drop, rewrite, forward packets http://www.openflow.org/wp/documents/ Switch Port MAC src MAC dst Eth type VLAN ID IP Src IP Dst IP Prot TCP sport TCP dport Rule Action Stats 1. Forward packet to port(s) 2. Encapsulate and forward to controller 3. Drop packet 4. Send to normal processing pipeline Packet + byte counters
  15. 15. OF scalability ? • Central Logical controller not a single point of failure • ONOS to be Open Sourced in the ~fall • Scale-out design, availability • Cassandra + message bus http://onlab.us/tools.html
  16. 16. “SDN” Timeline Feb 2011: OF v 1.1 Dec 2011: OF v 1.2 Feb 2012: Floodlight project April 2012: ONF talk by Google July 2012: Vmware acquires Nicira April 2013: OpenDayLight
  17. 17. GENI http://www.geni.net http://www.openflow.org/wp/tag/demo/ http://groups.geni.net/geni/wiki/GENIRacksHome “GENI is a virtual laboratory at the frontiers of network science and engineering for exploring future internets at scale. GENI creates major opportunities to understand, innovate and transform global networks and their interactions with society.” Dec 2008: VM Mobility June 2010: Aster*x Load Balancing ~ 2011: GENI Racks2009: FlowVisor
  18. 18. Controllers and Switches SDN: Adding Network Agility to the Cloud #oscon
  19. 19. OF Controllers and more … • Several controllers out there (NOX, POX,Trema, Beacon…) http://yuba.stanford.edu/~casado/of-sw.html https://networkheresy.com
  20. 20. OpenVSwitch • “Open vSwitch is a production quality, multilayer virtual switch licensed under the open source Apache 2.0 license. It is designed to enable the massive network automation through programmatic extension…”
  21. 21. e.g OVS rate limiting • Can enforce QoS with rate limiting controls • ovs-vsctl set Interface tap0 ingress_policing_rate=1000 • ovs-vsctl set Interface tap0 ingress_policing_burst=100
  22. 22. e.g OVS VLAN tagging • ovs-vsctl add-br br0 • ovs-vsctl add-port br0 eth0 • ovs-vsctl add-port br0 tap0 tag=1 • ovs-vsctl add-port br0 tap1 tag=2 • Complement on host2…
  23. 23. e.g OVS and GRE tunnels No Cookbook on OVS page ovs-vsctl add-port br1 gre1 -- set interface gre1 type=gre options:remote_ip=192.168.1.152 http://blog.scottlowe.org/2013/05/07/using-gre-tunnels-with-open-vswitch/
  24. 24. OVS and Openflow Point OVS switches to an OF controller: $ovs_vsctl set-controller br0 tcp 192.168.1.33:6633 Install rules on switch • Proactively (before any packet flows) • Reactively (unknown packets forwarded to controller, who pushes flow mod on switch, then operates at line rate)
  25. 25. Switch Light, Indigo (IVS) http://www.projectfloodlight.org/indigo/
  26. 26. OpenDaylight http://www.opendaylight.org
  27. 27. OpenDaylight Demo ?
  28. 28. SDN in Cloud Platforms SDN: Adding Network Agility to the Cloud #oscon
  29. 29. OpenNebula • Supports VLAN tagging and rate limiting through “hooks” that call ovs_vsctl • Scripts executed on an hypervisor before a VM is launched • Potentially also executed after VM shutdown for cleanup • Also supports OpenFlow http://opennebula.org/documentation:rel4.0:vgg
  30. 30. Quantum == Neutron https://wiki.openstack.org/wiki/Neutron Thanks to @hui_kenneth for diagram
  31. 31. Quantum == Neutron https://wiki.openstack.org/wiki/Neutron
  32. 32. CloudStack Network API
  33. 33. CloudStack Nicira NVP Support • By Hugo Trippaers @Spark404, Schuberg Philis • Isolated Networks in advanced Zone 4.0+ • L3 functionalities in 4.2 http://www.youtube.com/watch?v=F-FgHni7W34
  34. 34. CloudStack + Nicira NVP Insert Presentation Title Here
  35. 35. CloudStack SDN Plugins Thanks to @spark404 for table
  36. 36. Conclusions • Network abstractions to decouple from the physical network is the last leg of Cloud • SDN provides an architecture to abstract the network • OpenFlow is a standard that can be used to create SDN implementations • SDN is key to innovation in networking • The Open Cloud Platforms are embracing SDN solutions as network providers for multi- tenancy
  37. 37. Get Involved with Apache CloudStack Web: http://cloudstack.apache.org/ Mailing Lists: cloudstack.apache.org/mailing-lists.html IRC: irc.freenode.net: 6667 #cloudstack Twitter: @cloudstack LinkedIn: www.linkedin.com/groups/CloudStack-Users-Group-3144859 If it didn’t happen on the mailing list, it didn’t happen.

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