Hey,
I'm configuring neutron and I wonder if it can see (and manage) addresses directly from eth0 interface, or do I need to create something like br.ext bridge, so neutron would manage multiple IPs by connecting another clients (tap0, tap1...) to that interface.
If both configurations are possible to create, I would like to ask you which one is better and why?
Thank you in advance for your reply :)
If I am not totally wrong, the only solutions that allow you to connect a VM directly to an interface are PCI Passthrough and SRIOV, but they require special hardware.
Other than that, and assuming you use Libvirt to control your VMs (which most people do), a VM's network interface is represented by a TAP interface on the compute host that you must plug in somewhere. That "somewhere" is most often a bridge, either Openvswitch or Linuxbridge.
the bridges give you a single manageable platform to reference when using multiple interfaces on multiple servers that may not all have the same amount (or name "em1") of the interfaces...
Asked: 2016-11-08 06:17:01 -0600
Seen: 93 times
Last updated: Nov 08 '16
