Method and apparatus for programmable generation of traffic...

Details Method and apparatus for programmable generation of traffic... Method and apparatus for programmable generation of traffic...

2006-09-15

2011-12-06

Ngo, Ricky (Department: 2464)

Multiplex communications

Diagnostic testing

Fault detection

C370S252000

Reexamination Certificate

active

08072891

ABSTRACT:
Methods and apparatus provide single or multi-port, flexible, cost-effective, built-in self-test capabilities for network communications equipment, such as for example switches, and programmably generate, and subsequently analyze, one or more sequences of test packets, wherein the test packets simulate at least two flows of traffic. Such test packets can have programmable headers, payloads, and duty cycle. A line card embodying the present invention may generate its own traffic pattern, which may be similar or identical, to traffic patterns observed on Internet backbones. These traffic patterns may contain a bimodal distribution of control packets interspersed with data packets wherein the control packets and data packets are relatively short and long respectively. A plurality of test packet generators/receivers can be deployed in a network communications device having a plurality of ports. In such a configuration, test generator/receiver is associated with each of the plurality of ports. Under software control, test packets can be sent from at least any one of the plurality of ports to at least any other one of the plurality of ports. In this way, an in-circuit testing procedure may be implemented without having to disconnect line cards from the switch and connect the switch to expensive external test equipment.

REFERENCES:
patent: 3819878 (1974-06-01), Pine et al.
patent: 3965294 (1976-06-01), Renz et al.
patent: 5163051 (1992-11-01), Biessman et al.
patent: 5228042 (1993-07-01), Gauthier et al.
patent: 5255291 (1993-10-01), Holden et al.
patent: 5257311 (1993-10-01), Naito et al.
patent: 5313453 (1994-05-01), Uchida et al.
patent: 5812554 (1998-09-01), Kadambi et al.
patent: 5931961 (1999-08-01), Ranganathan et al.
patent: 6002675 (1999-12-01), Ben-Michael et al.
patent: 6034948 (2000-03-01), Nakamura et al.
patent: 6061725 (2000-05-01), Schwaller et al.
patent: 6226270 (2001-05-01), Chiku et al.
patent: 6515967 (2003-02-01), Wei et al.
patent: 6522661 (2003-02-01), Min
patent: 6529480 (2003-03-01), Stewart et al.
patent: 6574758 (2003-06-01), Eccles
patent: 6687231 (2004-02-01), Czerwiec et al.
patent: 6834040 (2004-12-01), Tomberlin
patent: 6950405 (2005-09-01), Van Gerrevink
patent: 6990294 (2006-01-01), Ikoma et al.
patent: 7073198 (2006-07-01), Flowers et al.
patent: 7184408 (2007-02-01), Denton et al.
patent: 2002/0006115 (2002-01-01), Hedayat et al.
Office Action mailed Feb. 1, 2005 for U.S. Appl. No. 09/919,728.
Office Action mailed Jul. 26, 2005 for U.S. Appl. No. 09/919,728.
Office Action mailed Mar. 8, 2006 for U.S. Appl. No. 09/919,728.
Advisory Action, issued in U.S. Appl. No. 09/919,728, mailed Jun. 1, 2006.
Office Action, issued in U.S. Appl. No. 11/509,948, mailed Sep. 18, 2008.
Office Action, issued in U.S. Appl. No. 11/509,948, mailed Apr. 7, 2009.
Office Action, issued in U.S. Appl. No. 11/509,948, mailed Sep. 10, 2009.
International Search Report, issued in International Patent Application No. PCT/US2002/024348, mailed Dec. 13, 2002.
Lai et al., “Measuring Bandwidth,” Proceedings of IEEE Infocom '99, Jul. 15, 1998, 25 pages.
Carter et al., “Measuring Bottleneck Link Speed in Packet-Switched Networks,” Performance Evaluation, Mar. 15, 1996, 24 pages, vol. 27-28.
Jain et al., “Pathload: A Measurement Tool for End-to-End Available Bandwidth,” In Proceedings of Passive and Active Measurements (PAM) Workshop, Mar. 2002, 12 pages.
Dovrolis et al., “What Do Packet Dispersion Techniques Measure?,” Proceedings of IEEE Infocom 2001, Apr. 22, 2001, pp. 905-914.
Office Action, issued in U.S. Appl. No. 11/509,948, mailed Feb. 16, 2010.
Notice of Allowance, issued in U.S. Appl. No. 11/509,948, mailed May 18, 2010.

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