Network management | Microwave

Microwave systems can be managed using proprietary tools or the de facto standard Simple Network Management Protocol (SNMP) using a proxy agent. The proxy agent unit is a standalone device capable of managing single microwave terminals or, in the case of a network hub point, the unit can manage multiple microwave terminals. The proxy agent continually polls the managed devices for changes in alarm and status information and updates its locally stored Management Information Base (MIB). Events such as major and minor alarms cause the device to generate enterprise specific traps directed to the network management system (NMS). General alarm and status information stored in the MIB is made available to the NMS in response to SNMP's Get and GetNext requests.

The setup and management of microwave-based LANs is becoming much easier. Lucent Technologies, for example, offers a Windows-based site survey tool to facilitate remote management, configuration and diagnosis of the installed base of WaveLAN wireless LANs, which include access points and adapters that are available in 900-MHz and 2.4-GHz versions.

WaveMANAGER/CLIENT makes it easy for system administrators to monitor the quality of communications at multiple WaveLAN stations in a wireless network. It can also be used to verify building coverage, identify coverage patterns, select alternate frequencies, locate and tune around RF interference, and customize network access security.

WaveMANAGER/CLIENT offers five basic functions:

§  Communications Indicator is located on the Windows 95 taskbar and provides mobile users graphical, real-time information on the level of communication quality between a WaveLAN station and the nearest WavePOINT access point.

§  Link Test Diagnostics verifies the communications path between neighboring WaveLAN stations, as well as between a WaveLAN station and WavePOINT access points within one wireless cell. Link Test Diagnostics measure signal quality, signal-to-noise ratio and the number of successfully received packets.

§  Site Monitor is used to ensure optimal placement of WavePOINT access points. While carrying a WaveLAN-equipped computer through the facility, Site Monitor graphically displays changing communication quality levels with the various access points installed in the building. This tool makes it easy to locate radio dead spots or sources of interference.

§  Frequency Select manages RF Channel selection. It enables the user to choose from up to eight different channels (in the 2.4-GHz frequency band). WaveMANAGER/AP is used to select access point frequencies.

§  Access Control Table Manager enables the system administrator to provide extra levels of security by restricting access to individual computers in a facility.