Debian und Ubuntu Integration

!!!/etc/network/interface!!!

Define a bridge

auto vmbr-int
allow-ovs vmbr-int
iface vmbr-int inet manual
  ovs_type OVSBridge

• auto is necessary to allow an automatic start (Ubuntu 16.04 using systemd)
• allow-ovs is the marker for an Openvswitch bridge. The bridge name follows, here vmbr-int
• iface is the well known /etc/network/interfaces identifier to start an interface configuration
• ovs_type defines the interface type for ovs. OVSBridge identifies an Openvswitch bridge

Define a L2 port (untagged)

allow-vmbr-int l2port
iface l2port inet manual
  ovs_bridge vmbr-int
  ovs_type OVSPort
  ovs_options tag=444

• allow-[name of the bridge to attach the port] defines the name of the bridge, to which the port should be attached to. In our example this is vmbr-int. The name of the port follows (here l2port)
• iface is the well known /etc/network/interfaces identifier to start an interface configuration — set the config to manual
• ovs-bridge holds the name of the bridge to which the port should be attached to. In our example this is vmbr-int.
• ovs_type defines the interface type for ovs. OVSPort identifies an Openvswitch port not seen by the Linux Operating system
• ovs_options defines additional options for the port – here define an untagged port, which is member of Vlan 444. If this option is not set, a port may use all vlan tags on the interfaces, because all ports transport vlan tags by default.

Define a L3 interface

allow-vmbr-int l3port
iface l3port inet static
  ovs_bridge vmbr-int
  ovs_type OVSIntPort
  ovs_options tag=444
  address 192.168.1.254
  netmask 255.255.255.0

• iface — set the mode to static — because an IP address is configured on this interface
• ovs_type — an L3 port must be defined as an internal port — must be set to OVSIntPort
• address and netmask are the well known parameters for IPV4 an address/netmask combination

Define a L2 port (tagged/trunking)

allow-vmbr-int l2taggedport
iface l2taggedport inet manual
  ovs_bridge vmbr-int
  ovs_type OVSPort
  ovs_options trunks=2101,2102,2110,2120,2999,3000

• A trunking port does not require an additional definition. In the example above, we want to limit the vlans on the port. This requires a trunk definition using the ovs_options line.

Links

• http://docs.openvswitch.org/en/latest/tutorials/ovs-advanced/