ZyXEL Communications eircom D1000, Руководство пользователя

Страница: 70 / 226

68
eircom D1000 modem U
ser’s Guide
Chapter 5 Wireless LAN
5.10.6 MBSSID
Traditionally, you need to use different APs to configure different Basic Service Sets (BSSs). As well
as the cost of buying extra APs, there is also the possibility of channel interference. The Device’s
MBSSID (Multiple Basic Service Set IDentifier) function allows you to use one access point to
provide several BSSs simultaneously. You can then assign varying QoS priorities and/or security
modes to different SSIDs.
Wireless devices can use different BSSIDs to associate with the same AP.
5.10.6.1 Notes on Multiple BSSs
• A maximum of eight BSSs are allowed on one AP simultaneously.
• You must use different keys for different BSSs. If two wireless devices have different BSSIDs
(they are in different BSSs), but have the same keys, they may hear each other’s
communications (but not communicate with each other).
• MBSSID should not replace but rather be used in conjunction with 802.1x security.
5.10.7 Wireless Distribution System (WDS)
The Device can act as a wireless network bridge and establish WDS (Wireless Distribution System)
links with other APs. You need to know the MAC addresses of the APs you want to link to. Once the
security settings of peer sides match one another, the connection between devices is made.
At the time of writing, WDS security is not compatible with all access points. Refer to your other
access point’s documentation for details.
The following figure illustrates how WDS link works between APs. Notebook computer A is a
wireless client connecting to access point AP 1 . AP 1 has no wired Internet connection, but it can
establish a WDS link with access point AP 2 , which has a wired Internet connection. When AP 1
has a WDS link with AP 2 , the notebook computer can access the Internet through AP 2 .
Figure 34
WDS Link Example
WDS
A
AP 1
AP 2
5.10.8 WiFi Protected Setup (WPS)
Your Device supports WiFi Protected Setup (WPS), which is an easy way to set up a secure wireless
network. WPS is an industry standard specification, defined by the WiFi Alliance.
WPS allows you to quickly set up a wireless network with strong security, without having to
configure security settings manually. Each WPS connection works between two devices. Both
devices must support WPS (check each device’s documentation to make sure).
Depending on the devices you have, you can either press a button (on the device itself, or in its
configuration utility) or enter a PIN (a unique Personal Identification Number that allows one device
to authenticate the other) in each of the two devices. When WPS is activated on a device, it has two