Visualizing the traffic flow when using Open vSwitch
When using the Open vSwitch driver, for an Ethernet frame to travel from the virtual machine instance out through the physical server interface, it will potentially pass through nine devices inside the host:
- The tap interface:
- The Linux bridge:
- The veth pair:
- The OVS integration bridge:
- OVS patch ports:
- The OVS provider bridge:
- The physical interface:
- The OVS tunnel bridge:
The Open vSwitch bridge
br-int is known as the integration bridge. The integration bridge is the central virtual switch that most virtual devices are connected to, including instances, DHCP servers, routers, and more. When Neutron security groups ...
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