The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 04, 2012
Filed:
Sep. 16, 2005
Gautam Aggarwal, San Jose, CA (US);
Pritam Shah, Brookline, MA (US);
Ajith Thrivikramannair, Santa Clara, CA (US);
Dana Blair, Atlanta, GA (US);
Gautam Aggarwal, San Jose, CA (US);
Pritam Shah, Brookline, MA (US);
Ajith Thrivikramannair, Santa Clara, CA (US);
Dana Blair, Atlanta, GA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A technique dynamically utilizes a plurality of multi-homed Virtual Private Network (VPN) tunnels from a client node to one or more enterprise networks in a computer network. According to the technique, a VPN client node, e.g., a 'spoke,' creates a plurality of multi-homed VPN tunnels with one or more servers/enterprise networks, e.g., 'hubs.' The spoke designates (e.g., for a prefix) one of the tunnels as a primary tunnel and the other tunnels as secondary (backup) tunnels, and monitors the quality (e.g., loss, delay, reachability, etc.) of all of the tunnels, such as, e.g., by an Optimized Edge Routing (OER) process. The spoke may then dynamically re-designate any one of the secondary tunnels as the primary tunnel for a prefix based on the quality of the tunnels to the enterprise. Notably, the spoke may also dynamically load balance traffic to the enterprise among the primary and secondary tunnels based on the quality of those tunnels.