ZyXEL Communications NWA3160 ユーザーズマニュアル

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Chapter 11 Other Wireless Configuration
ZyXEL NWA-3160 Series User’s Guide
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The following table describes the labels in this screen.
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To activate MAC filtering on an SSID profile, select the correct filter from the 
Enable MAC Filtering drop-down list box in the WIRELESS > SSID > Edit screen 
and click Apply.
11.5  Configuring Roaming
A wireless station is a device with an IEEE 802.11a/b/g compliant wireless interface. An 
access point (AP) acts as a bridge between the wireless and wired networks. An AP creates its 
own wireless coverage area. A wireless station can associate with a particular access point 
only if it is within the access point’s coverage area.
In a network environment with multiple access points, wireless stations are able to switch from 
one access point to another as they move between the coverage areas. This is known as 
roaming. As the wireless station moves from place to place, it is responsible for choosing the 
most appropriate access point depending on the signal strength, network utilization or other 
factors.
The roaming feature on the access points allows the access points to relay information about 
the wireless stations to each other. When a wireless station moves from a coverage area to 
another, it scans and uses the channel of a new access point, which then informs the other 
access points on the LAN about the change. An example is shown in 
.
With roaming, a wireless LAN mobile user enjoys a continuous connection to the wired 
network through an access point while moving around the wireless LAN.
Enable roaming to exchange the latest bridge information of all wireless stations between APs 
when a wireless station moves between coverage areas. Wireless stations can still associate 
with other APs even if you disable roaming. Enabling roaming ensures correct traffic 
forwarding (bridge tables are updated) and maximum AP efficiency. The AP deletes records of 
wireless stations that associate with other APs (Non-ZyXEL APs may not be able to perform 
this). 802.1x authentication information is not exchanged (at the time of writing).
Table 54   MAC Address Filter
LABEL
DESCRIPTION
Profile Name
Type a name to identify this profile.
Filter Action 
Define the filter action for the list of MAC addresses in the MAC address filter 
table.
Select Deny Association to block access to the router. MAC addresses not 
listed will be allowed to access the router. 
Select Allow Association to permit access to the router. MAC addresses not 
listed will be denied access to the router.
MAC Address
Enter the MAC addresses (in XX:XX:XX:XX:XX:XX format) of the wireless 
station to be allowed or denied access to the ZyXEL Device.
Description
Type a name to identify this wireless station.
Apply
Click Apply to save your changes.
Reset
Click Reset to begin configuring this screen afresh.