Digital Equipment Corporation

Dah-Ming Chiu

K K Ramakrishnan

Rajendra K Jain

Ram Sudama

Method and apparatus for operating a digital communication network to avoid congestion by detecting load conditions at intermediate stations exceeding an overload condition, and flagging information packets associated with those streams of traffic accounting for more than their fair share of throughput at such overloaded stations.

System for setting congestion avoidance flag at intermediate node to

Method and apparatus for operating a digital communication network to avoid congestion by detecting load conditions at intermediate stations exceeding an overload condition and adjusting the rates at which source stations that are utilizing more than their fair share of throughput capacity transmit information through the intermediate stations.

Avoiding congestion system for reducing traffic load on selected end

Method and apparatus for operating a digital communication network to avoid congestion by detecting load conditions at intermediate stations exceeding an overload condition, flagging information packets associated with those streams of traffic accounting for more than their fair share of throughput at such overloaded stations, and reducing at the end systems the throughput of those streams of traffic of which more than a predetermined fraction of the information packets received by the end systems are flagged.

System for avoiding network congestion by distributing router resources

Method and apparatus for operating a digital communication network to avoid congestion by detecting load conditions at the routers exceeding their knee capacities, flagging information packets associated with those streams of traffic accounting for more than their fair share of throughput at such overloaded routers, and reducing at the end systems the throughput of those streams of traffic for which more than a predetermined fraction of information packets received by the end systems are flagged.

Congestion avoidance scheme for computer networks

A method is used for collecting information at the session level for a multiple node distributed processing system. A first component software program monitors all packets passing through a node and extracts packet headers having a predetermined format from all nodes. A second component software program identifies a session in which each of the extracted packet headers was transmitted and, for each session, accumulates characterizing information about that session and calculates statistical data concerning all the sessions.

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Lexington, MA, United States of America

Dah-Ming Chiu