ZyXEL p-330w 사용자 가이드

ZyXEL P-330W User’s Guide

Chapter 5 Wireless

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When your P-330W's authentication method is set to open system, it will only accept open 
system authentication requests. The same is true for shared key authentication. However, 
when it is set to auto authentication, the P-330W will accept either type of authentication 
request and the P-330W will fall back to use open authentication if the shared key does not 
match. 

A preamble is used to synchronize the transmission timing in your wireless network. There are 
two preamble modes: Long and Short. 

Short preamble takes less time to process and minimizes overhead, so it should be used in a 
good wireless network environment when all wireless clients support it. 

Select Long if you have a ‘noisy’ network or are unsure of what preamble mode your wireless 
clients support as all IEEE 802.11b compliant wireless adapters must support long preamble. 
However, not all wireless adapters support short preamble. Use long preamble if you are 
unsure what preamble mode the wireless adapters support, to ensure interpretability between 
the P-330W and the wireless stations and to provide more reliable communication in ‘noisy’ 
networks..

Figure 26   Wireless: Advanced Settings 

The following table describes the advanced wireless LAN labels in this screen.

Note: The P-330W and the wireless stations MUST use the 
same preamble mode in order to communicate.

Table 18   Wireless: Advanced Settings

Authentication 

Type

Select Auto, Open System or Shared Key from the menu..

Preamble Type Select a preamble type from the drop-down list menu. Choices are Long or Short. 

The default setting is Long.