OpenStack Networking (Neutron)
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# Copyright 2012 Cisco Systems, Inc. All rights reserved.
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from oslo_config import cfg
from neutron._i18n import _
vxlan_opts = [
cfg.BoolOpt('enable_vxlan', default=True,
help=_("Enable VXLAN on the agent. Can be enabled when "
"agent is managed by ml2 plugin using linuxbridge "
"mechanism driver")),
help=_("TTL for vxlan interface protocol packets.")),
help=_("TOS for vxlan interface protocol packets. This option "
"is deprecated in favor of the dscp option in the AGENT "
"section and will be removed in a future release. "
"To convert the TOS value to DSCP, divide by 4.")),
cfg.StrOpt('vxlan_group', default=DEFAULT_VXLAN_GROUP,
help=_("Multicast group(s) for vxlan interface. A range of "
"group addresses may be specified by using CIDR "
"notation. Specifying a range allows different VNIs to "
"use different group addresses, reducing or eliminating "
"spurious broadcast traffic to the tunnel endpoints. "
"To reserve a unique group for each possible "
"(24-bit) VNI, use a /8 such as This "
"setting must be the same on all the agents.")),
help=_("IP address of local overlay (tunnel) network endpoint. "
"Use either an IPv4 or IPv6 address that resides on one "
"of the host network interfaces. The IP version of this "
"value must match the value of the 'overlay_ip_version' "
"option in the ML2 plug-in configuration file on the "
"neutron server node(s).")),
cfg.PortOpt('udp_srcport_min', default=0,
help=_("The minimum of the UDP source port range used for "
"VXLAN communication.")),
cfg.PortOpt('udp_srcport_max', default=0,
help=_("The maximum of the UDP source port range used for "
"VXLAN communication.")),
help=_("The UDP port used for VXLAN communication. By "
"default, the Linux kernel doesn't use the IANA "
"assigned standard value, so if you want to use it, "
"this option must be set to 4789. It is not set by "
"default because of backward compatibiltiy.")),
cfg.BoolOpt('l2_population', default=False,
help=_("Extension to use alongside ml2 plugin's l2population "
"mechanism driver. It enables the plugin to populate "
"VXLAN forwarding table.")),
cfg.BoolOpt('arp_responder', default=False,
help=_("Enable local ARP responder which provides local "
"responses instead of performing ARP broadcast into "
"the overlay. Enabling local ARP responder is not "
"fully compatible with the allowed-address-pairs "
help=_("Optional comma-separated list of "
"<multicast address>:<vni_min>:<vni_max> triples "
"describing how to assign a multicast address to "
"VXLAN according to its VNI ID.")),
bridge_opts = [
help=_("Comma-separated list of "
"<physical_network>:<physical_interface> tuples "
"mapping physical network names to the agent's "
"node-specific physical network interfaces to be used "
"for flat and VLAN networks. All physical networks "
"listed in network_vlan_ranges on the server should "
"have mappings to appropriate interfaces on each "
help=_("List of <physical_network>:<physical_bridge>")),
qos_options = [
cfg.IntOpt('kernel_hz', default=DEFAULT_KERNEL_HZ_VALUE,
help=_("Value of host kernel tick rate (hz) for calculating "
"minimum burst value in bandwidth limit rules for "
"a port with QoS. See kernel configuration file for "
"HZ value and tc-tbf manual for more information.")),
cfg.IntOpt('tbf_latency', default=DEFAULT_TC_TBF_LATENCY,
help=_("Value of latency (ms) for calculating size of queue "
"for a port with QoS. See tc-tbf manual for more "
def register_linuxbridge_opts(cfg=cfg.CONF):
cfg.register_opts(vxlan_opts, "VXLAN")
cfg.register_opts(bridge_opts, "LINUX_BRIDGE")
cfg.register_opts(qos_options, "QOS")