Invention Grant
- Patent Title: Load balancing using IPV6 mobility features
- Patent Title (中): 使用IPV6移动功能进行负载平衡
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Application No.: US13275115Application Date: 2011-10-17
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Publication No.: US08176203B1Publication Date: 2012-05-08
- Inventor: Zaide Liu , Richard David Day , Eric Sven-Johan Swildens
- Applicant: Zaide Liu , Richard David Day , Eric Sven-Johan Swildens
- Applicant Address: US MA Cambridge
- Assignee: Akamai Technologies, Inc.
- Current Assignee: Akamai Technologies, Inc.
- Current Assignee Address: US MA Cambridge
- Agent Joshua T. Matt
- Main IPC: G06F15/173
- IPC: G06F15/173

Abstract:
Techniques are provided for using the mobility support features of IPv6 to allow client and server nodes to communicate without the continuing intervention of a load-balancing node that selected the server node. A load-balancing node intercepts a TCP SYN packet addressed to a virtual IP address. The load-balancing node selects a server node from among multiple server nodes, and sends the packet toward the server node. The server node sends an IPv6 packet toward the client node. The packet contains a Binding Update option that specifies the virtual IP address as a Home Address. This information causes the client node to replace destination addresses in outgoing IP packets so that packets that the client node would have sent toward the virtual IP address are sent toward the selected server node's IP address instead. Consequently, the IP packets are routed toward the selected server node instead of the load-balancing node.
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