Method for detecting failure location of network in the...

Details Method for detecting failure location of network in the... Method for detecting failure location of network in the...

2008-01-22

2008-01-22

Pham, Chi (Department: 2616)

Multiplex communications

Diagnostic testing

Fault detection

C714S004110

Reexamination Certificate

active

07321560

ABSTRACT:
The present invention detects a failure location of network in the Internet. A pair of networks consists of an access network and an Internet service provider network, and a route consists of a source pair of networks and a destination pair of networks. The quality information values are inputted to elements in a matrix that all pairs of networks are put in same order as rows (or columns) of source pairs of networks and columns (or rows) of destination pairs of networks. If inferior quality values in the matrix line up in the row (or column), a failure is determined in a destination (or a source) pair of networks in column side (or row side) corresponding to a row (or a column). If inferior quality values line up in a slanting direction, a failure is determined in a route between the Internet service provider networks indicated to the slanting direction.

REFERENCES:
patent: 6680903 (2004-01-01), Moriguchi et al.
patent: 7266758 (2007-09-01), Takeuchi et al.
Jamshid Mahdavi, et al., “An Architecture for Large-Scale Internet Measurement”, IEEE Communications Magazine, vol. 36, No. 8, Aug. 1998, pp. 48-54.
Toru Hasegawa, et al., “Programmable Remote Traffic Monitoring Method Using Active Network Approach”, IFIP-TC6 Third International Working Conference, Proceeding of IWAN'01, Sep. 2001, pp. 49-64.

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