When using the Open vSwitch driver, for an Ethernet frame to travel from the virtual machine instance to the physical network, it will pass through many different interfaces, including the following:
|
Network Type |
Interface Type |
Interface Name |
|
all |
tap |
tapN |
|
all |
bridge |
qbrXXXX (only used with the iptables firewall driver) |
|
all |
veth |
qvbXXXX, qvoXXXX (only used with the iptables firewall driver) |
|
all |
vSwitch |
br-int |
|
flat, vlan |
vSwitch |
br-ex (user-configurable) |
|
vxlan, gre |
vSwitch |
br-tun |
|
flat, vlan |
patch |
int-br-ethX, phy-br-ethX |
|
vxlan, gre |
patch |
patch-tun, patch-int |
|
flat, vlan |
physical |
ethX (where X is the interface) |
The Open vSwitch bridge br-int is known as the integration bridge. The integration bridge is the central virtual switch that most virtual devices...