Understanding Fragmentation Threshold
The fragmentation threshold is a way of limiting the size of packets transmitted over the network. If a packet exceeds the fragmentation threshold, the packet is sent as multiple 802.11 frames.
Fragmentation involves more overhead because of the extra work of dividing and reassembling frames and because it increases message traffic on the network. However, fragmentation can help improve network performance and reliability if properly configured. For example, setting a smaller threshold can help with radio interference problems.
The default fragmentation threshold is the maximum 2346 bytes, which effectively disables packet fragmentation. We recommend that you do not set a lower threshold unless you suspect radio interference. The additional headers applied to each fragment increases overhead on the network and can greatly reduce throughput.
