The physical switch that the hosts are connected to, need to be configured as trunk ports, and allow trunking for all VLANS.
Robert Foote Chief Technical Officer Phone | 1-800-611-8763 Ext. 201 www.bpsnode.com From: Users [mailto:users-boun...@lists.opennebula.org] On Behalf Of Jhon Masschelein Sent: Monday, October 20, 2014 11:27 AM To: users@lists.opennebula.org Subject: [one-users] Opennebula + OpenVSwitch + FLoodlight with multiple hosts Hi, I am trying to get OpenNebula to work using OVS + VLAN networking, but I cannot get VMs on different hosts to talk to each other. If I just configure the OVS bridge on the host, set up the OpenNebula virtual network as an OVS network and add the hosts using the OVS driver, everything works within a host. Any VMs running on that host can talk to each other. Also, the two hosts themselves can talk to each other using the ip address assigned to the OVS bridge device. But a vm on one host cannot ping a VM on the other host. A number of internet resources like http://openvswitch.org/support/config-cookbooks/vlan-configuration-cookbook/ would seem to indicate that this should work, but it does not, at least not for me. As a next step, I set up a Floodlight openflow controller. With the above setup, I assign the controller to the OVSwitches and almost immediately, all running VMs are able to talk to each other. However, any VM's I start after the Floodlight controller has started, are again confined to their respective hosts. A restart of the Floodlght controller fixes it again: all VM's (old and new) are able to talk to each other. Of course, restarting floodlight every time does not seem to be the right way of doing this. I also reconfigured floodlight to "learning switch mode" but that did not change anything. I do see the ports added to the switches when the new VMs come up, but nothing more. Has anybody been able to get this setup to work? Is an openflow controller like floodlight required to get this to work reliably? FYI; the floodlight controller is not controlling the switch that is sitting between the hosts. I am not sure if this is even relevant since the web page I mentioned above indicates it should all work without a controller. If it can be made to work without the need for an external controller like floodlight, that would be totally acceptable. If anyone has been able to make a OVS setup work, I would be very grateful for any information you can pass my way. Best regards, Jhon Masschelein
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