ZyXEL Communications AG-225H manual Fragmentation Threshold, RTS/CTS Threshold

ZyXEL AG-225H User’s Guide

data encryption keys to encrypt every data packet that is wirelessly communicated between the AP and the wireless clients.

Figure 2-8 WPA/WPA2 with RADIUS Application Example

2.3Fragmentation Threshold

The Fragmentation Threshold is the maximum data fragment size (between 256 and 2432 bytes) that can be sent in the wireless network before the ZyXEL AG-225H will fragment the packet into smaller data frames.

A large Fragmentation Threshold is recommended for networks not prone to interference while you should set a smaller threshold for busy networks or networks that are prone to interference.

If the Fragmentation Threshold value is smaller than the RTS/CTS Threshold value (see previously) you set then the RTS (Request To Send)/CTS (Clear to Send) handshake will never occur as data frames will be fragmented before they reach RTS/CTS Threshold size.

2.4RTS/CTS Threshold

A hidden node occurs when two stations are within range of the same access point, but are not within range of each other. The following figure illustrates a hidden node. Both stations are within range of the access point (AP) or wireless gateway, but out-of-range of each other, so they cannot “hear” each other, that is

2-8 WLAN Networking