How to increase the size of the MAC address caching table?

[Alexandr Baryshnyev]

Hello everybody.

   I have about 1,500 devices on the network, but in fact the MAC address table on the central router running Freebsd 
12.0 never contains more than 1000 with small cached records. In the network, there are short-term random interruptions 
between different hosts and the router. The connection to the Internet on different computers in the network is lost for 
a short time. No apparent cause of these breaks was found.

   There is a suspicion that the MAC address table on the FreeBSD router has a limited size, about 1000 with a small 
record maximum. Is that so? Is it possible to increase the size of this table if it is limited? An internet search was 
not successful.

  Help me, please.

 > arp -an | grep -ve incomplete | wc -l
     1055

  Thank you.

-- 
    Best regards,
    Alexandr B. Baryshnyev, e-mail: abb at abbon.net