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As deployed, most OpenStack SDNs will use OVS or similar software on top of a (xen,kvm) Hypervisor, connected to some kind of central controller, which just may
by pquerna 10y ago
As deployed, most OpenStack SDNs will use OVS or similar software on top of a (xen,kvm) Hypervisor, connected to some kind of central controller, which just maybe would look kinda like OpenFlow. But all of this is running as an overlay on top of a much more traditional network.
This is very different than a TOR switch or core-router running OpenFlow. Only a few places are running more than a couple thousand VMs in a single SDN, and its nothing like what is being discussed above.
- pas 10y agoSure, and OVS (especially with OVN) is pretty capable. (And we haven't even touched OVS DPDK.) But if you need the big guns there are a ton of OpenStack Neutron plugins, OpenDaylight being one of them (networking-odl) and there are the classical/traditional vendor ones (Cisco, Arista, and so on). I think the future is very much means this jungle of APIs integrating in whatever tangled ways, and eventually the reliable, robust and sane ones will prevail.