Chapter 6 Wireless Configuration

6.4.4 STP Port States

STP assigns five port states (see next table) to eliminate packet looping. A bridge port is not allowed to go directly from blocking state to forwarding state so as to eliminate transient loops.

Table 22 STP Port States

PORT STATES

DESCRIPTIONS

Disabled

STP is disabled (default).

 

 

Blocking

Only configuration and management BPDUs are received and processed.

 

 

Listening

All BPDUs are received and processed.

 

 

Learning

All BPDUs are received and processed. Information frames are submitted to the

 

learning process but not forwarded.

 

 

Forwarding

All BPDUs are received and processed. All information frames are received and

 

forwarded.

 

 

6.5 DFS

When you choose 802.11a in Access Point mode (NWA-3160 only), the ZyXEL Device uses DFS (Dynamic Frequency Selection) to give you a wider choice of wireless channels.

DFS allows you to use channels in the frequency range normally reserved for radar systems. Radar uses radio signals to detect the location of objects for military, meteorological or air traffic control purposes. As long as your ZyXEL Device detects no radar activity on the channel you select, you can use the channel to communicate. However, a wireless LAN operating on the same frequency as an active radar system could disrupt the radar system. Therefore, if the ZyXEL Device detects radar activity on the channel you select, it automatically instructs the wireless clients to move to another channel, then resumes communications on the new channel.

6.6 Wireless Screen Overview

The following is a list of the wireless screens you can configure on the ZyXEL Device.

1Configure the ZyXEL Device to operate in AP, Bridge/Repeater, AP+Bridge or MBSSID mode in the Wireless screen. You can also select an SSID Profile in the Wireless screen.

2Use the SSID screens to view and edit SSID profiles.

3Use the Security screen to configure wireless profiles.

4Use the RADIUS screen to configure RADIUS authentication and accounting settings.

5Use the Layer-2 Isolation screen to prevent wireless clients associated with your ZyXEL Device from communicating with other wireless clients, APs, computers or routers in a network.

6Use the MAC Filter screen to allow or restrict access to your wireless network based on a client’s MAC address.

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ZyXEL NWA-3160 Series User’s Guide