Invention Grant
US08260922B1 Technique for using OER with an ECT solution for multi-homed sites
有权
使用OER与多宿主站点的ECT解决方案的技术
- Patent Title: Technique for using OER with an ECT solution for multi-homed sites
- Patent Title (中): 使用OER与多宿主站点的ECT解决方案的技术
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Application No.: US11229421Application Date: 2005-09-16
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Publication No.: US08260922B1Publication Date: 2012-09-04
- Inventor: Gautam Aggarwal , Pritam Shah , Ajith Thrivikramannair , Dana Blair
- Applicant: Gautam Aggarwal , Pritam Shah , Ajith Thrivikramannair , Dana Blair
- Applicant Address: US CA San Jose
- Assignee: Cisco Technology, Inc.
- Current Assignee: Cisco Technology, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Cesari and McKenna, LLP
- Main IPC: G06F15/173
- IPC: G06F15/173

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.
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