[Fiware-lab-federation-nodes] [CESNET #139187] Re: Does Mirantis fuel 7.0 support GRE tunnels?

[Wandekoken Grazioli Bruno Gaetano (gaea)]

Hi Giuseppe,

>Bruno,
>VxLAN is an overlay solution as well, it uses UDP for transporting L2
>frames, so it is not required to have a VxLAN compatible switch. My
>suggestion is to use the default configuration.
>@Spain node: can you confirm that VxLAN can be used? I don't see any issue
>on that.

We had network issues using vxlan and, also, the documentation explicitly says that vxlan must be supported by the network equipment, as shown below.
---"By default VXLAN tunnels will be used (can be changed to GRE via Fuel CLI). The networking equipment must support VXLAN segmentation. This option supports millions of tenant data networks."

>If you want to use GRE you have 2 possibilities:
>1) Use the FUEL CLI
>https://docs.mirantis.com/openstack/fuel/fuel-7.0/user-guide.html#using-fuel-cli
>* e.g.,
>fuel env create --name MyEnv --release 2 --mode ha --network-mode neutron
>--net-segment-type gre

Thanks for the pointers, we tried to set the network-segment-type in an already existing environment and it did not work. We will try this.

>2) Enabling GRE on /etc/neutron/plugin.ini after the OpenStack deployment.
>e.g.,
>------------------------------------------------
>[ml2]
>type_drivers = local,flat,vlan,gre
>tenant_network_types = flat,vlan,gre
>mechanism_drivers =openvswitch

>[agent]
>l2_population=False
>polling_interval=2
>arp_responder=False
>dont_fragment=False
>tunnel_types=gre
>-----------------------------------------------

>Regards,
>Giuseppe

BR,
Bruno.