network analyzer


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network analyzer

[′net‚wərk ′an·ə‚līz·ər]
(computer science)
An analog computer in which networks are used to simulate power line systems or physical systems and obtain solutions to various problems before the systems are actually built.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

network analyzer

A hardware device or server software that captures packets transmitted in a network for routine inspection and problem detection. Also called a "sniffer," "packet sniffer," "packet analyzer," "packet sampler," "traffic analyzer" and "protocol analyzer," the hardware analyzer plugs into a port on a network switch and decodes one or more protocols into a human-readable format for the network administrator. It can also store packets for further analysis later on.

In order to alert admins about traffic problems, packets are analyzed in real time. Hardware network analyzers can detect voltage and cable problems, whereas software analyzers cannot. See IPFIX, sFlow and port mirroring.
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References in periodicals archive ?
So now that we've recapped some of the history of vector network analyzers, let's now dive deeper into current trends.
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This new vector network analyzer is as portable as the other VNAs in the Compact product series but with an expanded frequency range, the company said.
Assess and optimize physical channel and AP placement plans prior to WiFi deployment with Surveyor Wireless, a Windows-based 7-layer protocol and network analyzer for enterprise 802.11 b networks.
Highlights included an entry-level spectrum analyzer that incorporates a 1-port vector network analyzer and a CW signal generator, 100-MHz and 1-GHz versions of an oscilloscope family, and a 6 1/2-digit bench/system digital multimeter plus instrument-control software.
Agilent Technologies' N9923A FieldFox RF Vector Network Analyzer (VNA) is presented as the world's most accurate handheld VNA.
To achieve this goal, these standards are used to calibrate commercially available mixed mode network analyzers such as the E5071B Agilent ENA series network analyzer to 8.5 GHz or the N1957A Agilent Physical Layer Test System to 50 GHz.
SHARE ONE NETWORK ANALYZER AMONG MULTIPLE NETWORKS.

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