Iam having some problems on my AP, i change this parameter an now i have my links more stable.
Mikrotiks says about this:
“hw-protection-threshold (integer [0..65535]; Default: 0)”
"Protection mode is controlled by hw-protection-mode setting of wireless interface. Possible values: none - for no protection (default), rts-cts for RTS/CTS based protection or cts-to-self for “CTS to self” based protection.
Frame size threshold at which protection should be used is controlled by hw-protection-threshold setting of wireless interface."
And what is the difference with: “hw-fragmentation-threshold”
“hw-fragmentation-threshold (integer[256..3000] | disabled; Default: 0) Specifies maximum fragment size in bytes when transmitted over wireless medium. 802.11 standard packet (MSDU in 802.11 terminology) fragmentation allows packets to be fragmented before transmiting over wireless medium to increase probability of successful transmission (only fragments that did not transmit correctly are retransmitted). Note that transmission of fragmented packet is less efficient than transmitting unfragmented packet because of protocol overhead and increased resource usage at both - transmitting and receiving party.”