[Question] Do I must separate management network and overlay network?

Lajos Katona katonalala at gmail.com
Fri Apr 8 07:07:38 UTC 2022

That is an example only, if you don't need provider network, you would like
to use only overlay networks like geneve, you can use only the suggested 2
interfaces, one for management and one for traffic.

Lajos Katona (lajoskatona)

박경원 <park0kyung0won at dgist.ac.kr> ezt írta (időpont: 2022. ápr. 8., P, 7:07):

> Hello everyone
> I'm trying to setup openstack cluster with openvswitch, following the
> guide in link below
> https://docs.openstack.org/neutron/yoga/admin/deploy-ovs-selfservice.html
> Diagram in the link above states that compute nodes should have three
> interfaces(management, overlay and provider)
> My question is, do I really need separated management network and overlay
> network? (I only have two switches)
> It seems like overlay traffic between VMs in virtual network are
> encapsulated with GENEVE, will not escape to management network.
> Is there any possible security risk of using the same network for both
> overlay and management? (not performance concerns but security)
> Thank you in advance!
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