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openvswitch / ovs-issues

Issue tracker repo for Open vSwitch
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How does OVS work without promiscuous mode? #275

Closed cuttingedge1109 closed 1 year ago

cuttingedge1109 commented 1 year ago

Hi guys. I've been running Openstack clouds with the openvswitch mechanism driver for the past few years. Last week I had to provision an openstack environment in VMWare for development purposes and I was experiencing some networking issues like not being able to connect to the VM via the ovs external bridge from the host network. After a bit of digging, I was able to get it to work by enabling promiscuous mode on the vmware port group. And I think I need to enable this promiscuous mode so that the bridge can receive the packets and forward them to the VMs in the hypervisor. But I haven't used this promiscuous mod in a physical environment in years. I wonder if this mod is automatically configured by the ovs install? Please clarify this. thank you.

apconole commented 1 year ago

OVS will automatically enable promisc on network interfaces.