04750175 is referenced by 47 patents and cites 7 patents.

A system for testing a data processing network and diagnosing malfunctions therein is disclosed. It is assumed that the data processing network includes a plurality of processing units coupled by communication paths in which each processing unit communicates with one or more other processing units in the data processing network by sending and receiving data packets over one or more of the communication paths. The system includes probes and a local processor for creating modified data packets from the data packets present on the network communication paths. The modified data packets allow a central processing unit which is communication with the local processor to diagnose network errors while maintaining the security of the data contained in the original data packets.

Title
Network diagnostic apparatus and method
Application Number
6/902197
Publication Number
4750175
Application Date
August 29, 1986
Publication Date
June 7, 1988
Inventor
Robert D Hodges
Concord
CA, US
William D Brenneman
San Ramon
CA, US
Agent
Fitch Even Tabin & Flannery
Assignee
Pactel Communications Companies
CA, US
IPC
H04L 1/24
G06F 11/08
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