8.3.6. vxlan
The following table outlines the options available under the [vxlan] group in the /etc/neutron/plugins/ml2/linuxbridge_agent.ini file.
| Configuration option = Default value | Type | Description |
|---|---|---|
|
| boolean value | 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 extension. |
|
| boolean value | Enable VXLAN on the agent. Can be enabled when agent is managed by ml2 plugin using linuxbridge mechanism driver |
|
| boolean value | Extension to use alongside ml2 plugin’s l2population mechanism driver. It enables the plugin to populate VXLAN forwarding table. |
|
| IP address value | 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). |
|
| list value | 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. |
|
| integer value | (DEPRECATED FOR REMOVAL) 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. |
|
| integer value | TTL for vxlan interface protocol packets. |
|
| port value | 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. |
|
| port value | The maximum of the UDP source port range used for VXLAN communication. |
|
| port value | The minimum of the UDP source port range used for VXLAN communication. |
|
| string value | 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 239.0.0.0/8. This setting must be the same on all the agents. |
