ZyXEL Communications ZyAIR B-420 User Manual page 19

The ZyAIR may be prone to RF (Radio Frequency) interference from other 2.4 GHz
devices such as microwave ovens, wireless phones, Bluetooth enabled devices,
Output Power Management
Power Management is the ability to set the level of output power. This feature is only available in bridge
mode.
There may be interference or difficulty with channel assignment when there is a high density of APs within a
coverage area. In this case you can lower the output power of each access point, thus enabling you to place
access points closer together.
WDS Functionality
A Distribution System (DS) is a wired connection between two or more wireless devices, while a Wireless
Distribution System (WDS) is a wireless connection. Your ZyAIR supports WDS for one point-to-point
connection, providing a cost-effective solution for wireless network expansion.
Brute-Force Password Guessing Protection
The ZyAIR has a special protection mechanism to discourage brute-force password guessing attacks on the
ZyAIR's management interfaces. You can specify a wait-time that must expire before entering a fourth
password after three incorrect passwords have been entered. Please see the appendix for details about this
feature.
SNMP
SNMP (Simple Network Management Protocol) is a protocol used for exchanging management information
between network devices. SNMP is a member of the TCP/IP protocol suite. Your ZyAIR supports SNMP
agent functionality, which allows a manger station to manage and monitor the ZyAIR through the network.
The ZyAIR supports SNMP version one (SNMPv1) and version two c (SNMPv2c).
Full Network Management
The embedded web configurator is an all-platform web-based utility that allows you to easily access the
ZyAIR's management settings. Most functions of the ZyAIR are also software configurable via the SMT
(System Management Terminal) interface. The SMT is a menu-driven interface that you can access from a
terminal emulator over a telnet connection.
Logging and Tracing
♦ Built-in message logging and packet tracing.
♦ Unix syslog facility support.
Getting to Know Your ZyAIR
ZyAIR B-420 Wireless LAN Ethernet Adapter and Bridge
and other wireless LANs.
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