ZyXEL Communications Corporation P663HN51 Manual De Usuario

Chapter 18 Wireless LAN

P-663HN-51 User’s Guide

Fragmentation 
Threshold

This is the maximum data fragment size that can be sent. Enter a 
value between 256 and 2432. 

RTS Threshold

Use CTS/RTS to reduce data collisions on the wireless network if you 
have wireless clients that are associated with the same AP but out of 
range of one another. When enabled, a wireless client sends an RTS 
(Request To Send) and then waits for a CTS (Clear To Send) before it 
transmits. This stops wireless clients from transmitting packets at the 
same time (and causing data collisions).

A wireless client sends an RTS for all packets larger than the number 
(of bytes) that you enter here. Set the RTS equal to or higher than 
the fragmentation threshold to turn RTS off.

DTIM Interval

Delivery Traffic Indication Message (DTIM) is the time period after 
which broadcast and multicast packets are transmitted to mobile 
clients in the Power Saving mode. A high DTIM value can cause 
clients to lose connectivity with

the network. This value can be set from 1 to 100.

Beacon Interval

When a wirelessly networked device sends a beacon, it includes with 
it a beacon interval. This specifies the time period before the device 
sends the beacon again.

The interval tells receiving devices on the network how long they can 
wait in low power mode before waking up to handle the beacon. This 
value can be set from 20ms to 1000ms. A high value helps save 
current consumption of the access point.

Global Max Clients Specify the maximum number (from 1 to 64) of the wireless stations 

that may connect to the ZyXEL Device.

XPress™ 
Technology

Select this for higher speeds, especially if you have both IEEE 
802.11b and IEEE 802.11g wireless clients. The wireless clients do 
not have to support XPress™ Technology, although the performance 
enhancement is greater if they do.

Afterburner 
Technology

Select this for higher speeds if the wireless clients also support 
afterburner technology. 

Transmit Power

Set the output power of the ZyXEL Device. If there is a high density 
of APs in an area, decrease the output power to reduce interference 
with other APs. 

WMM (Wi-Fi 
Multimedia)

Use WMM (Wifi MultiMedia) to prioritize services in wireless traffic.

Select Auto to automatically prioritize services according to the ToS 
value in the IP header of packets. 

Select Enable to prioritize services according to the ZyXEL Device’s 
Quality of Service settings.

Select Disable to not prioritize services in wireless traffic.

WMM No 
Acknowledgement

When using WMM, you can enable this to have the ZyXEL Device not 
re-send data if an error occurs. This can increase throughput speed 
but may also increase errors, especially in an environment with a lot 
of Radio Frequency (RF) noise. Otherwise leave it disabled.

Table 58   Wireless LAN > Advanced Setup