Meru revamps WLAN management software

Meru Networks has released a radically revised wireless LAN management application that for the first time runs on a dedicated appliance to collect only periodic summaries of access point statistics and look for problems.

Version 2.0 of E(z)RF Network Management digs up the equivalent of log information -- packet-level data that shows the   interactions "events") of the Wi-Fi client with access points and back-end servers. A Meru-built inference engine correlates the events, searching for patterns that show immediate or developing problems.

Meru executives say the application can pinpoint specific problems quickly, and identify the root causes precisely. That in turn saves IT troubleshooting time, and minimizes or prevents users being offline and unproductive.

Problems, trends, WLAN states can be displayed in a package of customizable graphical dashboards that give network managers a quick visual summary of what's going on (an optional software module creates a visual representation by mapping this data to a floor plan showing WLAN access points and clients). With a few clicks, customers can dig down into details and histories of a given client or access point. Because this event data is stored in a PostgreSQL RDBMS on the appliance, managers can replay events to watch what happens when a laptop, for example, repeatedly requests an IP address.

The previous version of E(z)RF software, like most other WLAN management packages, periodically polled access points, requesting summaries of statistical data on throughput, signal strength and the like. Many enterprise sites have relied on a companion tool, a wireless sniffer that captures packet level data. (See our Clear Choice tests on spectrum analyzers.) But it's been difficult to bring together and correlate the information from the statistical tools and the sniffers, says Kamal Anand, senior vice president of marketing for Meru.

"There's been no concept of a history of [WLAN] events to see what was happening in the network at various time," he says.

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