Multiplex communications – Diagnostic testing – Determination of communication parameters
Reexamination Certificate
2005-01-04
2005-01-04
Phunkulh, Bob A. (Department: 2661)
Multiplex communications
Diagnostic testing
Determination of communication parameters
C370S401000, C370S465000, C370S230000, C709S238000
Reexamination Certificate
active
06839327
ABSTRACT:
A method, apparatus, and computer-readable medium configured for maintaining consistent per-hop packet forwarding behavior among a plurality of network devices in a network within a Differentiated Services (DS) domain are disclosed. In one aspect, a method involves creating and storing a network-wide PHB definition that associates a PHB with a DS code point (DSCP) value, and with a set of parameters that define the bandwidth and buffer resources allocated to the PHBs on all interfaces of network devices within the DS domain. A mapping of each of the PHBs in the network-wide PHB definition to one or more queues of the network devices is determined. Drain size and queue size values are determined for each of the queues to which PHBs are mapped. A mapping of each of the PHBs to a threshold value associated with the queues is determined. Parameters of fragmentation and interleave mechanisms are determined. Network device configuration parameter values based on the mappings, the drain size, and the queue size, etc. are sent to each of the network devices within the DS domain. As a result, consistent PHB is achieved throughout a network using abstract definitions of PHBs.
REFERENCES:
patent: 6167445 (2000-12-01), Gai et al.
patent: 6363053 (2002-03-01), Schuster et al.
patent: 6430154 (2002-08-01), Hunt et al.
patent: 6473434 (2002-10-01), Araya et al.
patent: 6483805 (2002-11-01), Davies et al.
patent: 6570851 (2003-05-01), Koskelainen et al.
patent: 6621793 (2003-09-01), Widegren et al.
patent: 6633575 (2003-10-01), Koodli
patent: 6678252 (2004-01-01), Cansever
patent: 6697352 (2004-02-01), Ludwig et al.
patent: 6711141 (2004-03-01), Rinne et al.
S. Brim, et al., “Per Hop Behavior Identification Codes,” Oct. 1999, pp. 1-5, draft-ietf-diffserv-phbid-00.txt.
A. T. Campbell, “Differential Services: Services and Mechanism, Lecture 11,” Nov. 24, 1998, http://www.comet.ctr.columbia.edu/distributed/lectures/lecture11/sld001.htm.
J. Wroclawski, “Applications, Flexibility, and Differential Services,” MIT Laboratory for Computer Science, 34 slides, May 1998.
“Differential Service for the Internet,” 3 pages, http://diffserv.lcs.mit.edu/, Mar. 30, 1998.
S. Blake, et al., “An Architecture for Differentiated Services,” RFC 2475, Dec. 1998, pp. 1-31, http://www.ietf.org/rfc/.
J. Heinanen, et al., “Assured Forwarding PHB Group,” RFC 2597, Jun. 1999, pp. 1-10, http://www.ietf.org/rfc/.
F. Baker, et al., “Management Information Base for the Differentiated Services Architecture,” Mar. 2000, draft-ietf-diffserv-mib-02.txt, pp. 1-61, http://www.ietf.org/internet-drafts/.
V. Jacobson, “An Expedited Forwarding PHB,” RFC 2598, Jun. 1998, pp. 1-10, http://www.ietf.org/rtc/.
D. Grossman, “New Terminology for Diffserv,” Nov. 1999, http://www.ietf.org/internet-drafts/draft-ietf-diffserv-new-terms-02.txt.
S. Brim et al., “Per Hop Behavior Identification Codes,” draft-ietf-diffserv-phbid-00.txt, Internet Engineering Task Force (IETF), Oct. 1999.
A. Campbell, “Differential Services: Services and Mechanisms,” 23-slide presentation, Columbia University Department of Electrical Engineering, Nov. 24, 1998.
J. Wroclawski, “Applications, Flexibility, and Differential Services,” 34-slide presentation, MIT Laboratory for Computer Science,printedJan. 13, 2000.
Author unknown, “Differential Service for the Internet,” from “diffserv.lcs.mit.edu,” Mar. 30, 1998.
S. Blake et al., “An Architecture for Differentiated Services,” RFC 2475, IETF Network Working Group, Dec. 1998.
J. Heinanen et al., “Assured Forwarding PHB Group,” RFC 2597, IETF Network Working Group, Jun. 1999.
F. Baker et al., “Management Information Base for the Differentiated Services Architecture,” draft-ietf-diffserv-mib-02.txt, IETF Diffserv Working Group, Mar. 2000.
V. Jacobson et al., “An Expedited Forwarding PHB,” RFC 2598, IETF Network Working Group, Jun. 1999.
D. Grossman, “New Terminology for Diffserv,” IETF Diffserv Working Group, Nov., 1999.
Cohen Ron
Elfassy Nitsan
Zavalkovsky Arthur
Cisco Technology Inc.
Hickman Palermo Troung & Becker LLP
Phunkulh Bob A.
LandOfFree
Method and apparatus for maintaining consistent per-hop... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for maintaining consistent per-hop..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for maintaining consistent per-hop... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3429795