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OVS with HyperV Integration with vxlan

asked 2016-01-14 08:49:32 +0300

shiva-m gravatar image

Hi, we are following this blog "https://cloudbase.it/open-vswitch-24-on-hyperv-part-1/" to integrate Openstack Cloud with OVS L2 agent on HyperV Compute. If we enable OpenVswitch Extension on HyperV Switch, the connectivity is lost between Controller and the Compute.

As far I know, for VXLAN, tunnel will be established between two endpoints which should be connected. In this example, 10.13.10.15 and 10.13.10.30 should be pingable.

options: {dfdefault="true", inkey=flow, localip="10.13.10.35", outkey=flow, remote_ip="10.13.10.30"}

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answered 2016-01-14 21:03:16 +0300

aserdean gravatar image

Hey,

Could you paste more about your configuration. A good starting point would be the outputs of the following commands:

Get-VMSwitch *

Get-VMSwitchExtension *

ovs-vsctl show

ovs-dpctl show

ipconfig

Get-VMNetworkAdapter -ManagementOS

Get-Service ovs*

Thanks, Alin.

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Hi Alin, I have pasted output of commands which you requested here "http://pastebin.com/exF7TepP" Please let me know if any other clarification required. Thanks Shiva

shiva-m gravatar imageshiva-m ( 2016-01-18 10:49:16 +0300 )edit

Hi Shiva, I have looked over your command outputs. For some reason you are missing the internal port. Could you please issue the following command and tell me if you have connectivity: ovs-vsctl add-port br-tun internal (ovs-vsctl.exe add-port br-tun internal in the blog post you mentioned above)

aserdean gravatar imageaserdean ( 2016-01-19 11:21:51 +0300 )edit

Hi Alin, Thanks for the reply. Yes, somehow it was not showing. Now I have done the setup afresh. I have pasted the output again. Please have a look at it. "http://pastebin.com/NvXkCLxF" From the dump-flows, I could see that packets are going out from the tunnel endpoint, but not reaching the other.

shiva-m gravatar imageshiva-m ( 2016-01-19 13:30:46 +0300 )edit

Hi Shiva, You are correct packets are going through the endpoint. Can you do a tcpdump on the other host to verify it receives them. It can probably be a mismatch between the flows.Could you post me also the flows from the other endpoint(issue ovs-ofctl show <tunnel> please)?. Are you using neutron?

aserdean gravatar imageaserdean ( 2016-01-19 15:46:44 +0300 )edit

Hi Alin, Yes, I am using neutron. Last time forgot to paste dump-flows on the other end. Sometimes , If I do tcpdump on the Network Node adapter, keeps on sending ARP request to find other tunnel endpoint.(Compute Node side). Output pasted: http://pastebin.com/ySXTKk7P, http://pastebin.com/wAVWRwDx

shiva-m gravatar imageshiva-m ( 2016-01-20 13:53:30 +0300 )edit

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Asked: 2016-01-14 08:49:32 +0300

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Last updated: Jan 14 '16