8.8.2. agent

agent_type = Open vSwitch agent

string value

(DEPRECATED FOR REMOVAL) Selects the Agent Type reported.

arp_responder = False

boolean value

Enable local ARP responder if it is supported. Requires OVS 2.1 and ML2 l2population driver. Allows the switch (when supporting an overlay) to respond to an ARP request locally without performing a costly ARP broadcast into the overlay. NOTE: If enable_distributed_routing is set to True then arp_responder will automatically be set to True in the agent, regardless of the setting in the config file.

baremetal_smartnic = False

boolean value

Enable the agent to process Smart NIC ports.

dont_fragment = True

boolean value

Set or un-set the don’t fragment (DF) bit on outgoing IP packet carrying GRE/VXLAN tunnel.

drop_flows_on_start = False

boolean value

Reset flow table on start. Setting this to True will cause brief traffic interruption.

enable_distributed_routing = False

boolean value

Make the l2 agent run in DVR mode.

explicitly_egress_direct = False

boolean value

When set to True, the accepted egress unicast traffic will not use action NORMAL. The accepted egress packets will be taken care of in the final egress tables direct output flows for unicast traffic.

extensions = []

list value

Extensions list to use

l2_population = False

boolean value

Use ML2 l2population mechanism driver to learn remote MAC and IPs and improve tunnel scalability.

minimize_polling = True

boolean value

Minimize polling by monitoring ovsdb for interface changes.

ovsdb_monitor_respawn_interval = 30

integer value

The number of seconds to wait before respawning the ovsdb monitor after losing communication with it.

tunnel_csum = False

boolean value

Set or un-set the tunnel header checksum on outgoing IP packet carrying GRE/VXLAN tunnel.

tunnel_types = []

list value

Network types supported by the agent (gre, vxlan and/or geneve).

veth_mtu = 9000

integer value

MTU size of veth interfaces

vxlan_udp_port = 4789

port value

The UDP port to use for VXLAN tunnels.