network virtualisation without SDN solution underneath ?

asked 2015-02-10 23:41:05 -0600

monohusche gravatar image

Hi there,

I understand that Neutron is "NaaS" and provides https://www.sdxcentral.com/resources/open-source/what-is-openstack-quantum-neutron/ (network virtualisation). At the same time, there are various SDN solutions achieving network virtualisation as well (e.g. NSX, ODL) for which there are existing Neutron plugins. That seems to imply (which was actually described https://www.openstack.org/assets/presentation-media/OpenDaylightOpenStackIcehouseSummit.pdf (here)) that the API's of the underlying SDN solution more or less match the Neutron API exposed above.

So, my question is what would be gained from a network virtualisation perspective by running ODL underneath Neutron (ODL then communicating with the physical infrastructure) rather than plugging the physical infrastructure directly into Neutron (e.g. Cisco Nexus plugin) ?

I understand the benefit of ODL/NSX from an underlay/SDN perspective, i.e. separation of control and data plane, but I am more focused on network virtualisation right now.

thx Nick

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