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</o:shapelayout></xml><![endif]--></head><body lang=DE link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Hi there,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-US>I have a cluster of 5 hosts running with openNebula 4.8 and just recently configured OpenvSwitch on all these nodes.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Networking is working just fine. This holds also true for VLAN isolation, but just as long as the VMs belonging to the isolated Virtual Network reside on the same physical host. When I move these VMs to different hosts, they can’t communicate with each other anymore. Non-isolated nodes can communicate to everywhere without problems.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Is that intentional? I chose OpenVswitch because the ONE docs say it requires no support from the switch hardware (or more specifically it says 802.1Q would require support).<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>A colleague suggested it might have to do with the switch not forwarding the tagged packets from Open vSwitch. Can that be the cause? Does OVS even tag the packets?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Here’s my environment:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>OpenNebula 4.8<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Open vSwitch 2.0.1<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Cisco Switch<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Host OS: Ubuntu Server 14.04 LTS (latest patches)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Output from ‘ovs-vsctl show’:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> Bridge "br0"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> Port "vnet3"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> Interface "vnet3"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> Port "bond0"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> Interface "bond0"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> Port "vnet1"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> Interface "vnet1"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> Port "vnet2"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> Interface "vnet2"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> Port "vnet5"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> Interface "vnet5"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> Port "br0"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> Interface "br0"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> type: internal<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> Port "vnet0"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> Interface "vnet0"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> Port "vnet4"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> Interface "vnet4"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> ovs_version: "2.0.1"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Where “br0” is my ovs bridge interface which has the external ‘real’ IP address configured and “bond0” is a link aggregated dual Gbit interface which is the port for “br0”<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I would greatly appreciate some suggestions or ideas on this, since I am a bit lost.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Cheers,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Christian<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:DE'>-----------------------------------------------<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:DE'>Christian Hüning, BSc.<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:DE'>Fakultät Technik und Informatik, Department Informatik<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='mso-fareast-language:DE'>Berliner Tor 7<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='mso-fareast-language:DE'>20099 Hamburg<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='mso-fareast-language:DE'>Web: <a href="http://www.mars-group.org">http://www.mars-group.org</a><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='mso-fareast-language:DE'><o:p> </o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>