Electrical computers and digital processing systems: multicomput – Multiple network interconnecting
Reexamination Certificate
2003-09-22
2010-10-05
Duong, Oanh (Department: 2155)
Electrical computers and digital processing systems: multicomput
Multiple network interconnecting
C709S235000, C709S239000, C709S245000, C370S231000, C370S237000, C713S153000
Reexamination Certificate
active
07809860
ABSTRACT:
A network architecture in accordance with the present invention includes a communication network that supports one or more network-based Virtual Private Networks (VPNs). The communication network includes a plurality of boundary routers that are connected by access links to CPE edge routers belonging to the one or more VPNs. To prevent traffic from outside a customer's VPN (e.g., traffic from other VPNs or the Internet at large) from degrading the QoS provided to traffic from within the customer's VPN, the present invention gives precedence to intra-VPN traffic over extra-VPN traffic on each customer's access link through access link prioritization or access link capacity allocation, such that extra-VPN traffic cannot interfere with inter-VPN traffic. Granting precedence to intra-VPN traffic over extra-VPN traffic in this manner entails special configuration of network elements and protocols, including partitioning between intra-VPN and extra-VPN traffic on the physical access link using layer 2 multiplexing and the configuration of routing protocols to achieve logical traffic separation between intra-VPN traffic and extra-VPN traffic at the VPN boundary routers and CPE edge routers. By configuring the access networks, the VPN boundary routers and CPE edge routers, and the routing protocols of the edge and boundary routers in this manner, the high-level service of DoS attack prevention is achieved.
REFERENCES:
patent: 4924500 (1990-05-01), Lewis et al.
patent: 5768271 (1998-06-01), Seid
patent: 5842040 (1998-11-01), Hughes et al.
patent: 5918019 (1999-06-01), Valencia
patent: 5940591 (1999-08-01), Boyle et al.
patent: 6079020 (2000-06-01), Liu
patent: 6173399 (2001-01-01), Gilbrech
patent: 6178505 (2001-01-01), Schneider et al.
patent: 6182226 (2001-01-01), Reid et al.
patent: 6226748 (2001-05-01), Bots et al.
patent: 6463061 (2002-10-01), Rekhter et al.
patent: 6473863 (2002-10-01), Genty et al.
patent: 6502135 (2002-12-01), Munger et al.
patent: 6526056 (2003-02-01), Rekhter et al.
patent: 6532088 (2003-03-01), Dantu et al.
patent: 6564261 (2003-05-01), Gudjonsson et al.
patent: 6611522 (2003-08-01), Zheng et al.
patent: 6614800 (2003-09-01), Genty et al.
patent: 6618761 (2003-09-01), Munger et al.
patent: 6738910 (2004-05-01), Genty et al.
patent: 6778498 (2004-08-01), McDysan
patent: 6822940 (2004-11-01), Zavalkovsky et al.
patent: 6826616 (2004-11-01), Larson et al.
patent: 6912232 (2005-06-01), Duffield et al.
patent: 6954790 (2005-10-01), Forslow
patent: 7072346 (2006-07-01), Hama
patent: 7120682 (2006-10-01), Salama
patent: 7188180 (2007-03-01), Larson et al.
patent: 7272643 (2007-09-01), Sarkar et al.
patent: 7307990 (2007-12-01), Rosen et al.
patent: 7315554 (2008-01-01), Baum et al.
patent: 2001/0016914 (2001-08-01), Tabata
patent: 2001/0050914 (2001-12-01), Akahane et al.
patent: 2002/0032717 (2002-03-01), Malan et al.
patent: 2002/0036983 (2002-03-01), Widegren et al.
patent: 2002/0038339 (2002-03-01), Xu
patent: 2002/0042875 (2002-04-01), Shukla
patent: 2002/0073337 (2002-06-01), Ioele et al.
patent: 2002/0075901 (2002-06-01), Perlmutter et al.
patent: 2002/0097725 (2002-07-01), Dighe et al.
patent: 2002/0107908 (2002-08-01), Dharanikota
patent: 2003/0016672 (2003-01-01), Rosen et al.
patent: 2003/0088697 (2003-05-01), Matsuhira
patent: 2003/0110288 (2003-06-01), Ramanujan et al.
patent: 2003/0123446 (2003-07-01), Muirhead et al.
patent: 2003/0147408 (2003-08-01), Datta et al.
patent: 2003/0167342 (2003-09-01), Munger et al.
patent: 2003/0177381 (2003-09-01), Ofek et al.
patent: 2003/0177391 (2003-09-01), Ofek et al.
patent: 2004/0034702 (2004-02-01), He
patent: 2004/0223500 (2004-11-01), Sanderson et al.
patent: 2004/0266420 (2004-12-01), Malinen et al.
patent: 2005/0053079 (2005-03-01), Havala
patent: 2005/0088977 (2005-04-01), Roch et al.
patent: 0743777 (1996-11-01), None
patent: 0801481 (1997-10-01), None
patent: WO-98-57465 (1998-12-01), None
Branden et al., “Integrated Services in the Internet Architecture: an Overview”, IETF, RFC 1633, Jun. 1994.
Branden et al., “Resource ReSerVation Protocol (RSVP)—Version 1 Functional Specificationnnn”, IETF, RFC 2205, Sep. 1997.
Blake et al, “An Architecture for Differentiated Services”, IETF, RFC 2475, Dec. 1998.
Rosen et al., “BGP/MPLS VPNs”, IETF, RFC 2547, Mar. 1999.
Gleeson et al., “A Framework for IP Based Virtual Private Networks”, IETF, RFC 2764, Feb. 2000.
Gleeson et al., “A Framework for IP Based Virtual Private Networks”, IETF, Internet Draft, Oct. 1999, pp. 1-16.
Liao et al., “Dynamic Edge Provisioning for Core IP Networks Quality of Service”, 2000 IWQOS, 2000 Eighth International Workshop, Jul. 2000, p. 1-2.
Muthukrishnan et al., “A Core MPLS IP VPN”, IETF, RFC 2917, Sep. 2000.
Bernet et al., “A Framework for Integrated Services Operation Over Diffserv Networks”, IETF, RFC 2998, Nov. 2000.
“DOD Standard Transmission Control Protocol”, Information Sciences Institute, University of Southern California, IETF Request for Comment 761, Jan. 1980.
Bradley et al. “Multiprotocol Interconnect Over Frame Relay”, Network Working Group, Request for Comments: 1490, Jul. 1993.
“Microsoft Computer Dictionary, Fourth Edition”, copyright 1999, Microsoft Corporation, pp. 132, 133, 390.
Boundary Router Definition, http://www.pcmag.com/encyclopedia—tenn/0,2542,t=boundary+router&i=38871,00.asp.
O'Leary D: “Virtual Private Networks: Progress and Challenges” The North American Network Operators' Group Nanog 18th Meeting, Feb. 6-8, San Jose, CA, US, [Online]Feb. 7, 2000, XP002295672 Retrieved form the Internet: URL:http://www.nanog.org/mtg-0002/ppt/vpn.ppt> [retrived on May 13, 2010].
Gleeson B et al: “A Framework for IP Based Virtual Private Networks” Network Working Group Request For Comments, XX, XX, Feb. 2000, pp. 1-62, XP000864260.
Anonymous: “I-D Action: draft-ouldbrahim-vpn-vr-03.txt”[Online] 5 March 2001, XP002295822 IETF Announcement list Retrieved from the Internet: URL:http://www.atm.tut.fi/list-archive/iet f-announce/msg02879.html> [retrieved on May 13, 2010].
Duong Oanh
Verizon Business Global LLC
LandOfFree
System, method and apparatus that isolate virtual private... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System, method and apparatus that isolate virtual private..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System, method and apparatus that isolate virtual private... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4200256