ml2_conf.ini¶

agent_boot_time¶

Type:	integer
Default:	180

Delay within which agent is expected to update existing ports when it restarts

type_drivers¶

Type:	list
Default:	local,flat,vlan,gre,vxlan,geneve

List of network type driver entrypoints to be loaded from the neutron.ml2.type_drivers namespace.

tenant_network_types¶

Type:	list
Default:	local

Ordered list of network_types to allocate as tenant networks. The default value ‘local’ is useful for single-box testing but provides no connectivity between hosts.

mechanism_drivers¶

Type:	list
Default:	u''

An ordered list of networking mechanism driver entrypoints to be loaded from the neutron.ml2.mechanism_drivers namespace.

extension_drivers¶

Type:	list
Default:	u''

An ordered list of extension driver entrypoints to be loaded from the neutron.ml2.extension_drivers namespace. For example: extension_drivers = port_security,qos

path_mtu¶

Type:	integer
Default:	0

Maximum size of an IP packet (MTU) that can traverse the underlying physical network infrastructure without fragmentation when using an overlay/tunnel protocol. This option allows specifying a physical network MTU value that differs from the default global_physnet_mtu value.

physical_network_mtus¶

Type:	list
Default:	u''

A list of mappings of physical networks to MTU values. The format of the mapping is <physnet>:<mtu val>. This mapping allows specifying a physical network MTU value that differs from the default global_physnet_mtu value.

external_network_type¶

Type:	string
Default:	<None>

Default network type for external networks when no provider attributes are specified. By default it is None, which means that if provider attributes are not specified while creating external networks then they will have the same type as tenant networks. Allowed values for external_network_type config option depend on the network type values configured in type_drivers config option.

overlay_ip_version¶

Type:	integer
Default:	4

IP version of all overlay (tunnel) network endpoints. Use a value of 4 for IPv4 or 6 for IPv6.

flat_networks¶

Type:	list
Default:	*

List of physical_network names with which flat networks can be created. Use default ‘*’ to allow flat networks with arbitrary physical_network names. Use an empty list to disable flat networks.

vni_ranges¶

Type:	list
Default:	u''

Comma-separated list of <vni_min>:<vni_max> tuples enumerating ranges of Geneve VNI IDs that are available for tenant network allocation

max_header_size¶

Type:	integer
Default:	30

Geneve encapsulation header size is dynamic, this value is used to calculate the maximum MTU for the driver. This is the sum of the sizes of the outer ETH + IP + UDP + GENEVE header sizes. The default size for this field is 50, which is the size of the Geneve header without any additional option headers.

tunnel_id_ranges¶

Type:	list
Default:	u''

Comma-separated list of <tun_min>:<tun_max> tuples enumerating ranges of GRE tunnel IDs that are available for tenant network allocation

network_vlan_ranges¶

Type:	list
Default:	u''

List of <physical_network>:<vlan_min>:<vlan_max> or <physical_network> specifying physical_network names usable for VLAN provider and tenant networks, as well as ranges of VLAN tags on each available for allocation to tenant networks.

vni_ranges¶

Type:	list
Default:	u''

Comma-separated list of <vni_min>:<vni_max> tuples enumerating ranges of VXLAN VNI IDs that are available for tenant network allocation

vxlan_group¶

Type:	string
Default:	<None>

Multicast group for VXLAN. When configured, will enable sending all broadcast traffic to this multicast group. When left unconfigured, will disable multicast VXLAN mode.

ovn_nb_connection¶

Type:	string
Default:	tcp:127.0.0.1:6641

The connection string for the OVN_Northbound OVSDB. Use tcp:IP:PORT for TCP connection. Use ssl:IP:PORT for SSL connection. The ovn_nb_private_key, ovn_nb_certificate and ovn_nb_ca_cert are mandatory. Use unix:FILE for unix domain socket connection.

ovn_nb_private_key¶

Type:	string
Default:	u''

The PEM file with private key for SSL connection to OVN-NB-DB

ovn_nb_certificate¶

Type:	string
Default:	u''

The PEM file with certificate that certifies the private key specified in ovn_nb_private_key

ovn_nb_ca_cert¶

Type:	string
Default:	u''

The PEM file with CA certificate that OVN should use to verify certificates presented to it by SSL peers

ovn_sb_connection¶

Type:	string
Default:	tcp:127.0.0.1:6642

The connection string for the OVN_Southbound OVSDB. Use tcp:IP:PORT for TCP connection. Use ssl:IP:PORT for SSL connection. The ovn_sb_private_key, ovn_sb_certificate and ovn_sb_ca_cert are mandatory. Use unix:FILE for unix domain socket connection.

ovn_sb_private_key¶

Type:	string
Default:	u''

The PEM file with private key for SSL connection to OVN-SB-DB

ovn_sb_certificate¶

Type:	string
Default:	u''

The PEM file with certificate that certifies the private key specified in ovn_sb_private_key

ovn_sb_ca_cert¶

Type:	string
Default:	u''

The PEM file with CA certificate that OVN should use to verify certificates presented to it by SSL peers

ovsdb_connection_timeout¶

Type:	integer
Default:	180

Timeout in seconds for the OVSDB connection transaction

ovsdb_probe_interval¶

Type:	integer
Default:	60000
Minimum Value:	0

The probe interval in for the OVSDB session in milliseconds. If this is zero, it disables the connection keepalive feature. If non-zero the value will be forced to at least 1000 milliseconds. Defaults to 60 seconds.

neutron_sync_mode¶

Type:	string
Default:	log
Valid Values:	off, log, repair

The synchronization mode of OVN_Northbound OVSDB with Neutron DB. off - synchronization is off log - during neutron-server startup, check to see if OVN is in sync with the Neutron database. Log warnings for any inconsistencies found so that an admin can investigate repair - during neutron-server startup, automatically create resources found in Neutron but not in OVN. Also remove resources from OVN that are no longer in Neutron.

ovn_l3_mode¶

Type:	boolean
Default:	true

Whether to use OVN native L3 support. Do not change the value for existing deployments that contain routers.

Warning

This option is deprecated for removal. Its value may be silently ignored in the future.

Reason:	This option is no longer used. Native L3 support in OVN is always used.

ovn_l3_scheduler¶

Type:	string
Default:	leastloaded
Valid Values:	leastloaded, chance

The OVN L3 Scheduler type used to schedule router gateway ports on hypervisors/chassis. leastloaded - chassis with fewest gateway ports selected chance - chassis randomly selected

enable_distributed_floating_ip¶

Type:	boolean
Default:	false

Enable distributed floating IP support. If True, the NAT action for floating IPs will be done locally and not in the centralized gateway. This saves the path to the external network. This requires the user to configure the physical network map (i.e. ovn-bridge-mappings) on each compute node.

vif_type¶

Type:	string
Default:	ovs
Valid Values:	ovs, vhostuser

Type of VIF to be used for ports valid values are (ovs, vhostuser) default ovs

Warning

This option is deprecated for removal. Its value may be silently ignored in the future.

Reason:	The port VIF type is now determined based on the OVN chassis information when the port is bound to a host.

vhost_sock_dir¶

Type:	string
Default:	/var/run/openvswitch

The directory in which vhost virtio socket is created by all the vswitch daemons

dhcp_default_lease_time¶

Type:	integer
Default:	43200

Default least time (in seconds) to use with OVN’s native DHCP service.

ovsdb_log_level¶

Type:	string
Default:	INFO
Valid Values:	INFO, DEBUG, CRITICAL, WARNING, ERROR

The log level used for OVSDB

ovn_metadata_enabled¶

Type:	boolean
Default:	false

Whether to use metadata service.

dns_servers¶

Type:	list
Default:	u''

Comma-separated list of the DNS servers which will be used as forwarders if a subnet’s dns_nameservers field is empty. If both subnet’s dns_nameservers and this option is empty, then the DNS resolvers on the host running the neutron server will be used.

firewall_driver¶

Type:	string
Default:	<None>

Driver for security groups firewall in the L2 agent

enable_security_group¶

Type:	boolean
Default:	true

Controls whether the neutron security group API is enabled in the server. It should be false when using no security groups or using the nova security group API.

enable_ipset¶

Type:	boolean
Default:	true

Use ipset to speed-up the iptables based security groups. Enabling ipset support requires that ipset is installed on L2 agent node.

permitted_ethertypes¶

Type:	list
Default:	u''

Comma-separated list of ethertypes to be permitted, in hexadecimal (starting with “0x”). For example, “0x4008” to permit InfiniBand.