CobaltCore

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Networking ​

CobaltCore uses OVN (Open Virtual Network) as the virtual networking layer for VMs. OVN is managed by Neutron's OVN backend and provides virtual networks, routers, and security groups at scale without per-node agent complexity.

Components ​

ComponentRole
OVNVirtual networking for VMs - provides L2/L3 switching and routing

How it fits in the stack ​

Neutron (in the OpenStack layer) owns the logical network model - networks, subnets, ports, routers, security groups. OVN translates those logical resources into forwarding rules on each hypervisor node via the OVN Controller daemonset. VMs get virtual interfaces managed by OVS.

See OpenStack - Neutron for the Neutron API layer, and Networking - OVN for the OVN data plane details.

EU and German government funding logos

Funded by the European Union – NextGenerationEU.

The views and opinions expressed are solely those of the author(s) and do not necessarily reflect the views of the European Union or the European Commission. Neither the European Union nor the European Commission can be held responsible for them.

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CobaltCore is a project of Linux Foundation Europe. For applicable policies including privacy policy, terms of use and trademark usage guidelines, please see https://linuxfoundation.eu. Linux is a registered trademark of Linus Torvalds.