| 摘要 |
A method and apparatus that enables client-to-server bindings to be modified and controlled automatically and enables data access nodes to be configured to automatically redistribute access. In one embodiment, the redistribution is accomplished using a pool internet protocol (IP) addressing format wherein each of the clients access data via a pool IP address. The pool IP address corresponds to a group of servers that operate in accordance with an algorithm to determine which specific server will respond to the request. An address resolution protocol (ARP) to is used to associate specific media access control (MAC) address with specific servers that respond to a request. Each of the servers in the pool maintains a database, or client service table, of clients that they service. The client service tables can be pre-populated with clients or can be set up with an algorithm to assign servers as they make their requests. When the servers in the pool detect a broadcasted ARP request to the pool IP address, they check their client service tables to determine if the request originates from a client that they service. If the client service table indicates that the designated client is contained in a specific server's client service table, that server responds by sending an ARP response with the server's MAC address back to the designated client. The client is then "bound" to the desired server in the pool and its subsequent requests will be sent to that specific server.
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