Introduction to open virtual network Dawid Deja
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OVN is a system that provides network abstraction for virtual networks. It uses OpenFlow to provide virtual network abstractions like L2 and L3 overlays and security groups. OVN complements OVS by adding native support for these virtual network abstractions. OVN represents virtual network constructs like ports, bridges and routers logically and uses tunnels between hypervisors to implement this logical view. It works with an OVN controller and database to coordinate the logical to physical mapping and network configuration across multiple hypervisor hosts.
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Open v switch20150410b
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Introduction to open virtual network Dawid Deja
- 1. INTRODUCTION TO OPEN VIRTUAL NETWORK DAWID DEJA SENIOR DEVOPS, OVH
- 2. AGENDA 1. What is OVN & Why use it 2. OVN Architecture 3. Demo
- 3. WHAT IS OVN
- 4. WHAT IS OVN According to documentation „is a system to support virtual network abstraction. OVN complements the existing capabilities of OVS to add native support for virtual network abstractions, such as virtual L2 and L3 overlays and security groups.” Uses OpenFlow to achive this goal.
- 5. OPENVSWITCH VS OVN • Virtual port • Virtual bridge • OpenFlow Rules • Virtual interface* • Logical port • Logical bridge • Logical router • Logical gateway
- 6. VIRTUAL VS LOGICAL VIRTUAL • Resides on a given host • Depends on a physical infrastructure • Decentralized LOGICAL • Can reside on multiple hosts and can switch hosts • Abstracts physical infrastructure • Centralized
- 7. OVS AND OVN ARE DOING SIMILAR THING* JUST FOR SAKE OF THIS PRESENTATION*
- 8. OTHER OVN FEATURES • L3 Routers • Security groups • Gateways • DHCP
- 11. TUNNELS
- 12. DEMO TIME!
- 13. HARDWARE SETUP ManagerCompute1 Compute2 Priv net Ext net
- 14. L2 NETWORKING VM1 OVS bridge VM2 VM3 OVS bridge HostA HostB Tunnel
- 15. L2 NETWORKING LOGICAL VM1 VM2 VM3 OVN bridge
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- 17. MIGRATION VM1 OVS bridge VM3 OVS bridge HostA HostB Tunnel VM2
- 18. L3 NETWORKING VM1 OVS bridge VM2 VM3 OVS bridge HostA HostB Tunnel VM4
- 19. L3 NETWORKING LOGICAL VM1 VM3 OVN bridge OVN Router VM2 VM4 OVN bridge
- 20. OPENSTACK INTEGRATION Networking-ovn • Communication between OVN and Neutron • Pins logical stuff with virtual
- 21. CHALLENGES • No A/A HA • Immature
- 23. RESOURCES • http://www.openvswitch.org/support/dist-docs/ovn-architecture.7.html • https://qyx.me/2018/07/10/run-and-test-ovn/ • https://weiti.org/ovn/2018/01/02/ovn-br-int-or-other-name • http://blog.spinhirne.com/2016/09/a-primer-on-ovn.html • http://blog.spinhirne.com/2016/09/an-introduction-to-ovn-routing.html • https://www.openvswitch.org/releases/NEWS-2.11.0.txt