Network monitoring device and system

Details Network monitoring device and system Network monitoring device and system

1991-08-26

1994-05-24

Safourek, Benedict V.

Multiplex communications

Wide area network

Packet switching

370 17, 370 941, H04B 1700

Patent

active

053155807

ABSTRACT:
The network monitoring device is provided for monitoring the activity on a network carrying message packets each of which contains source and destination addresses. The monitoring device includes a network interface for sending and receiving message packets carried on the network, and a processor for collecting and processing data from the packets received by the network interface. In order to minimize processor memory requirements for the monitoring device, only randomly selected packets detected by the network interface are processed by the processor of the device. Preferably, the monitoring device is further simplified by providing a central measurement station to analyze data collected from the randomly sampled packets. As a result, the only processing required to be done by the monitoring device is the construction of collected-data packets for transmission to the central measurement station. A network monitoring system can advantageously be provided by using a number of such monitoring devices each associated with a respective logical segment of the network and each forwarding collected-data packets to a central measurement station.

REFERENCES:
patent: 5101402 (1992-03-01), Chiu et al.
"A Mutli-purpose, Distributed Lan Traffic Monitoring Tool" 8302 IEEE Network Jul. 1987, No. 3, pp. 32-39.
"A Distributed Approach to Lan Monitoring Using High Performance Monitors" 8302 IEEE Network Jul. 1987, No. 3 pp. 13-19.
"A Monitor Tool for a Network Based on the Cambridge Ring" 8239 Software Practice & Experience, Jul. 1986, No. 7, pp. 671-687.
P. D. Amer and L. N. Cassel, "Management of Sampled Real-Time Network Measurements", Proc. 14th Conference on Local Computer Networks, pp. 62-68, Minneapolis, Minn., Oct. 1989.

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