Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2006-07-11
2006-07-11
Duong, Frank (Department: 2666)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S401000
Reexamination Certificate
active
07075933
ABSTRACT:
Deployment of a hub-and-spoke (HaSP) topology virtual private network (VPN) may be facilitated by implementing a bi-directional VRF on a hub PE and using the hub PE as a hub-reflector. Route distinguishers and route targets may be used to differentiate traffic originating on the spokes from traffic originating on the hub. Using a bi-directional VRF allows a HaSP VPN to be created using a single link between the hub CE and hub PE. Allowing the hub CE to control spoke route distribution, and differentiating the direction of the flow by route target and route designator, enables the hub to control traffic between the spokes. Configuring the hub PE as a route reflector allows communication between the spokes to take place without having the CE hub inspect every piece of traffic. Optionally, other services may be provided by the hub PE as well, such as NAT, firewall, and AAA services.
REFERENCES:
patent: 6205488 (2001-03-01), Casey et al.
patent: 6693878 (2004-02-01), Daruwalla et al.
patent: 6778498 (2004-08-01), McDysan
patent: 2002/0037010 (2002-03-01), Yamauchi
patent: 2003/0108051 (2003-06-01), Bryden et al.
patent: 2003/0223406 (2003-12-01), Balay et al.
Rosen et al, BGP/MPLS VPNs, RFC 2547 pp. 1-25, Mar. 1999.
Bates et al, BGP Route Reflection An alternative to full mesh IBGP, RFC 1966, pp. 1-7, Jun. 1996.
Semeria, RFC 2547bis: BGP/MPLS VPN Fundamentals, Whitepaper, Juniper Networks, pp. 1-38, 2001.
Cisco Designing MPLS Extension for Customer Edge Router, Product Bulletin, No. 1575, pp. 1-23, 2001.
Repiquet, Keep it Simple with BGP/MPLS Virtual Private Networks, White Paper, downloadable at www.lambdanet.net, pp. 1-20, May 2002.
International Search Report from International Application No. PCT/US04/23408 dated Sep. 23, 2005.
Semeria, RFC 2547bis: BGP/MPLS VPN Fundamentals, Juniper Networks, pp. 1-038, 2001.
Cisco, Designing MPLS Extensions for Customer Edge Router, Product Bulletin, No. 1575, pp. 1-23, 2001.
E. Rosen, et al.,BGP/MPLS VPNs, IETF RFC 2547, Mar. 1999.
MPLS VPN: VRF Selection Based on Source IP Address, Sep. 2003.
Duong Frank
Gorecki John C.
Nortel Networks Ltd.
LandOfFree
Method and apparatus for implementing hub-and-spoke topology... 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 implementing hub-and-spoke topology..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for implementing hub-and-spoke topology... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3597187