Address-based service request distributing method and address converter

• US 6,611,873 B1
• Filed: 11/22/1999
• Issued: 08/26/2003
• Est. Priority Date: 11/24/1998
• Status: Expired due to Fees

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Kanehara, Fumikazu
• Primary Examiner(s): Barot, Bharat
• Application Number:
  US09/444,375
• Time in Patent Office: 1,373 Days
• Field of Search: 709/200-203, 709/217-219, 709/223-224, 709/231-233, 709/236, 709/238, 709/242-243, 709/245, 709/105, 707/10, 707/200-204
• US Class Current: 709/238
• CPC Class Codes: H04L 61/25 of the same type
• CPC Class Codes: H04L 61/4541 Directories for service discovery
• CPC Class Codes: H04L 67/1001 for accessing one among a plurality of replicated servers
• CPC Class Codes: H04L 67/1006 with static server selection, e.g. the same server being selected for a specific client
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: Y10S 707/99953 Recoverability

Abstract

A method for distributing service requests to a plurality of servers without any need for preparing a special measure in the clients or performing session management is disclosed. Addresses of a plurality of clients are classified in advance into a plurality of address groups. Each of the plurality of address groups is correlated with one of a plurality of servers. A service request of a client is distributed to a corresponding server depending on which address group the client belongs to.

Claims

1. A method for distributing service requests from a plurality of clients to a plurality of servers, comprising the steps of:

classifying, in advance, addresses of the clients into a plurality of address groups;

correlating each of the plurality of address groups with one of the plurality of servers; and

sending a service request of a client to the server corresponding to the address group of the client.

2. The method according to claim 1, wherein a single service is provided by the plurality of servers.

3. The method according to claim 1, wherein different services are provided by the plurality of servers.

4. The method according to claim 1, wherein a service request is received from a client through Ethernet network and is sent to a corresponding server through Ethernet network.

5. A method for distributing service requests from a plurality of clients to a plurality of servers, comprising the steps of:

classifying, in advance, addresses of the clients into a plurality of address groups;

correlating each of the plurality of address groups, a kind of service, and one of the plurality of servers with each other; and

sending a service request of a client to the server corresponding to the address group of the client and a kind of a service that is requested by the client.

6. The method according to claim 5, wherein a single service is provided by the plurality of servers.

7. The method according to claim 5, wherein different services are provided by the plurality of servers.

8. The method according to claim 5, wherein a service request is received from a client through ATM network and is sent to a corresponding server through an Ethernet network.

9. An address converter for distributing service requests from a plurality of clients to a plurality of servers, comprising:

an address conversion table retrievably storing addresses of the plurality of clients, which are classified into a plurality of address groups, wherein each of the plurality of address groups is correlated with one of the plurality of servers; and

a controller for sending a service request of a client to the server corresponding to the address group of the client as determined by referring to the address conversion table, in order to provide a requested service to the client.

10. The address converter according to claim 9, wherein a single service is provided by the plurality of servers.

11. The address converter according to claim 9, wherein different services are provided by the plurality of servers.

12. The address converter according to claim 9, wherein a service request is received from a client through Ethernet network and is sent to a corresponding server through Ethernet network.

13. An address converter for distributing service requests from a plurality of clients to a plurality of servers, comprising:

an address conversion table retrievably storing addresses of the plurality of clients, which are classified into a plurality of address groups, wherein each of the plurality of address groups, a kind of service, and one of the plurality of servers are correlated with each other; and

a controller for sending a service request of a client to the server corresponding to the address group of the client and the kind of service that is requested by the client, as determined by referring to the address conversion table, in order to provide a requested service to the client.

14. The address converter according to claim 13, wherein a single service is provided by the plurality of servers.

15. The address converter according to claim 13, wherein different services are provided by the plurality of servers.

16. The address converter according to claim 13, wherein a service request is received from a client through ATM network and is sent to a corresponding server through an Ethernet network.

17. A method for distributing service requests from a plurality of clients to a plurality of servers, comprising the steps of:

classifying, in advance, addresses of the clients into a plurality of address groups;

correlating each of the plurality of address groups with one of the plurality of servers;

converting one or more addresses of a destination server of a service request from a requesting client into one or more addresses of a different server, which provides the requested service, based on the address group of the requesting client; and

sending the service request of the requesting client to the different server corresponding to the address group of the requesting client, using the converted one or more addresses.