Distributed network monitoring system for monitoring node and li

Details Distributed network monitoring system for monitoring node and li Distributed network monitoring system for monitoring node and li

1991-04-23

1996-07-30

Teska, Kevin J.

Boots, shoes, and leggings

3642256, 3642417, 36424296, 364DIG1, G06F 1100, G06F 1500

Patent

active

055420478

ABSTRACT:
A distributed network monitor system distributes the network monitoring function among each of the nodes of a multiple network system, such that monitor software resident in each node is responsible for providing status information about that node and its communications links. At predetermined monitoring intervals, a circulating status table (CST) (FIG. 4) is circulated to all of the on-line nodes, with each node updating the CST with its link and status information. The monitor software (FIG. 1) includes a servicer task (22), a node monitor task (24), and a packet manager task (26), with intertask data transfers being implemented through a monitor region (28) in memory. In addition to link and node status information, the CST includes information about links that are in an intermittent condition (i.e., links with significantly degraded statistical performance). Intermittent link conditions are determined by a voting procedure in which each node votes on the condition of its links with other nodes, with the results of the votes being distributed in the CST and used by each node to determine those nodes with links in an intermittent condition. For those links without sufficient message traffic to make a clear determination of condition, volunteer nodes send additional link test messages until sufficient statistical information is available.

REFERENCES:
patent: 4532625 (1985-07-01), Stover
patent: 5109486 (1992-04-01), Seymour
patent: 5115495 (1992-05-01), Tsuchiya et al.
patent: 5121390 (1992-06-01), Farrell et al.
patent: 5125075 (1992-06-01), Goodale et al.

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