This is the slide deck I used to present on OpenStack Networking (formerly Quantum) at the OpenStack Denver meetup in late April 2013.

1. Scott Lowe, VCDX
Engineering Architect, Virtual Networks
Network & Security Business Unit, VMware, Inc.
An Introduction to OpenStack
Networking
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Wednesday, April 24, 13

2. Agenda
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§OpenStack Networking overview
§Open vSwitch overview
§Nicira NVP overview
§Example OpenStack Networking use cases
§ Logical view
§ Physical view with Open vSwitch plugin
§ Physical view with NVP plugin
Wednesday, April 24, 13

3. OpenStack Networking overview
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§Formerly known as “Quantum” but ran into
trademark issues
§Designed to provide “Network-as-a-Service”
functionality
§Supplies a consistent API for provisioning network
services
§Uses a plugin architecture to allow a variety of
backend providers
§Leverages a number of open source technologies
(network namespaces, Linux bridges, Open
vSwitch, dnsmasq)
Wednesday, April 24, 13

4. OpenStack Networking architecture
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5. OpenStack Networking architecture
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6. OpenStack Networking plugins
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§Big Switch Networks
§Brocade
§Cisco
§Hyper-V
§Linux Bridge
§Meta Plugin
§Midokura Midonet
§NEC OpenFlow
§Nicira NVP
§Open vSwitch
§PLUMgrid
§Ryu OpenFlow
Wednesday, April 24, 13

7. Open vSwitch (OVS) overview
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§An open source, highly programmable virtual switch
§Supports OpenFlow, 802.1Q VLANs, LACP, STP
§Supports KVM and Xen
§OVS serves as the basis for a number of different
SDN/network virtualization platforms
§Currently the default networking stack for XenServer
and Xen Cloud Platform (XCP)
§More information available at http://openvswitch.org
or http://blog.scottlowe.org/tag/ovs
Wednesday, April 24, 13

8. Nicira NVP overview
8
§Scale-out controller architecture with northbound
APIs
§Leverages OVS across hypervisor platforms
§ Uses OVSDB API to communicate with the controllers
§ Receives flow configuration from controllers via
OpenFlow
§Leverages multiple network encapsulation protocols
§ Uses STT and GRE for encapsulation
§ Supports IPSec with STT/GRE for certain use cases
§Supplies both L2 (switched) and L3 (routed)
gateway services
Wednesday, April 24, 13

9. Example OpenStack Networking use
cases
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§Use case #1: Single flat network
§Use case #2: Multiple flat networks
§Use case #3: Mixed flat and private networks
§Use case #4: Provider router with private networks
§Use case #5: Per-tenant routers with private
networks
Wednesday, April 24, 13

10. Use case #1: Single flat network
(logical view)
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11. Use case #1: Single flat network
(physical view)
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12. Use case #2: Multiple flat networks
(logical view)
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13. Use case #2: Multiple flat networks
(physical view)
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14. Use case #3: Mixed flat and private
networks (logical view)
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15. Use case #3: Mixed flat and private
networks (physical view)
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16. Use case #4: Provider router with
private networks (logical view)
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17. Use case #4: Provider router with
private networks (physical view)
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18. Use case #5: Per-tenant routers with
private networks (logical view)
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19. Use case #5: Per-tenant routers with
private networks (physical view)
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20. Q&A
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21. Thank You
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Wednesday, April 24, 13