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Data centre networking: What is OVN?
- Open Virtual Network (OVN) is a software defined, hardware accelerated, network solution working at layers below the CMS.
- OVN fills the gap between cloud management software, such as Kubernetes, and network service and policy for thousands of entities across physical machines.
- OVN's data path implementation can be fully accelerated by the NIC, which enables packets to directly appear in the virtual machine or container endpoint.
- OVN's hardware acceleration features include access control lists (ACLs), layer 2 switching, layer 3 routing, NAT, among others.
- OVN is a distributed system with several components and it uses ovsdb-server as its database without introducing any new dependencies.
- OVN is included in Canonical's networking products such as Charmed OpenStack, Sunbeam, and MicroCloud.
- Using industry standard routing protocols like BGP, OVN provides secure tenant isolation and enhanced performance through hardware acceleration and offloading.
- OVN's features benefit from specialised hardware, such as NVIDIA ConnectX-6 Dx and the latest generation of smart NICs like NVIDIA Bluefield, Intel IPU E2100 or AMD Pensando Elba.
- OVN with built-in support for tenant isolation and enhanced performance is a cornerstone of Canonical's networking vision.
- Future content will cover topics such as running OVN on NVIDIA Bluefield DPUs and managing distributed security controls.
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