opa-arptbl-tuneup

Adjusts kernel ARP/neighbor table sizes for very large subnets based on configured IPv4/IPv6 network interface netmask values. Normally executes once on boot by opa.service; however, opa-arptbl-tuneup can be invoked with user discretion for a changed subnet configuration.

Note: Must execute as root.

Syntax

opa-arptbl-tuneup [start | stop | restart | force-reload | status]

Options

--help

Produces full help text.

start

Adjusts kernel ARP table size.

stop

Restores previous configuration.

restart

Stops then starts.

force-reload

Stops then starts. (Identical to restart option.)

status

Checks if original table size was changed.