Electrical computers and digital processing systems: multicomput – Computer network managing – Computer network monitoring
Patent
1996-11-21
2000-08-29
Burgess, Glenton B.
Electrical computers and digital processing systems: multicomput
Computer network managing
Computer network monitoring
709223, 709224, 709227, 370 14, 370 15, 370253, 370517, 370519, 375226, 375245, 375244, H04L 1226
Patent
active
06112236&
ABSTRACT:
The quality of service provided by a connection in transferring data units (19) between first and second points (A, B) across a network (10), is measured by a method involving monitoring the normal connection traffic at the first and second points (A, B) to detect the occurrence of the same events at each point (unit 22). An event is deemed to have occurred at a monitored network point when a predetermined set of criteria concerning one or more data units is satisfied by the connection data-unit traffic at the point concerned. Whenever an event is detected, an event report or "digest" is generated (unit 25), this digest including a signature based on the contents of the data units giving rise to the event. Digests from both monitored network points (A, B) are sent to a correlation unit (30) where digests relating to the occurrence of the same event at the two network points are matched up. The matched digest pairs are then passed to a measurement unit (31) to derive quality of service measurements.
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International Conference on Communications, Jun. 23-26, 1991, pp. 264-268, N. Sato et al., "Performance Monitoring Method Using OAM Cells in B-ISDN".
IEEE Network, vol. 1, No. 3, Jul. 1987, pp. 40-48, D. Jacobson et al., "A Master/Slave Monitor Measurement Technique for an Operating Ethernet Network".
Hewlett-Packard Journal, vol. 44, No. 2, Apr. 1993, pp. 82-89 Matthew J. Burdick, "Continuous Monitoring of Remote Networks: The RMON MIB".
Dollin Christopher James
Goldsack Patrick
Burgess Glenton B.
Hewlett--Packard Company
Le Hieu C.
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