System and method for ensuring a device uses the correct instance of a network service

• US 7,747,763 B2
• Filed: 07/26/2005
• Issued: 06/29/2010
• Est. Priority Date: 07/26/2005
• Status: Active Grant

• Current Assignee: Emc IP Holding Company LLC (Dell Technologies Inc.)
• Original Assignee: Novell Incorporated (Open Text Corporation)
• Inventors: Lewis, Matthew E., Backman, Drake
• Primary Examiner(s): Meky; Moustafa M
• Assistant Examiner(s): RUBIN, BLAKE J
• Application Number:
  US11/189,043
• Publication Number:
  US 20070027970A1
• Time in Patent Office: 1,799 Days
• Field of Search: 709/229, 709/233, 709/225
• US Class Current: 709/229
• CPC Class Codes: H04L 43/091 Measuring contribution of individual network components to actual service level

Abstract

A system and method are provided for ensuring access to the correct instance of a network service. The system includes a plurality of management domains. Each management domain may include at least one server and at least on managed device. When the managed device sends a request for a network service, the request may be received by all servers in the network, including those belonging to different management domains. As such, each server may include a referral list. When the server receives a request, the server may determine whether its management domain includes the appropriate instance of the network service. If it does not, it may forward the request to other servers in the referral list until the appropriate network service is identified.

Claims

1. A system for providing a device access to a correct instance of a network service, comprising:

a plurality of managed devices configured to issue a request for the network service; and

a plurality of management domains communicatively coupled to each other via a network, each of the plurality of managed devices belonging to at least one of the plurality of management domains, wherein each of the plurality of management domains comprises;

at least one server comprising an instance of the network service, wherein the instance of the network service is responsible for communicating with one or more of the plurality of managed devices that belong to the management domain of the at least one server; and

a network service management module configured to;

receive a request for the network service from at least one of the plurality of managed devices;

provide the at least one requesting device access to the instance of the network service if the request refers to the management domain of the at least one server;

forward the request to one or more other servers in the network if the request does not refer to the management domain of the at least one server; and

receive a response to the forwarded request from one of the other servers in the network, wherein the response indicates that the requesting device has membership in the management domain of the responding server, wherein the at least one server acts as a proxy facilitating an exchange of information relating to the network service between the requesting device and the responding server.

2. The system of claim 1, wherein the at least one server further comprises a referral list that provides information about the other servers in the network, wherein one or more of the other servers in the referral list are located in other management domains.

3. The system of claim 1, wherein each of the plurality of managed devices comprises:

a service determination module configured to generate the request for the network service; and

a resource utilization module configured to receive a response to the request, wherein the response includes instructions for accessing the network service.

4. The system of claim 1, wherein the request for the network service includes a broadcast request transmitted to each of the plurality of management domains, wherein the requesting device has membership in a particular one of the plurality of management domains.

5. The system of claim 4, wherein the request for the network service includes identity information for the requesting device, the identity information comprising at least one of a unique attribute associated with the requesting device, indicia indicating membership in the particular one of the plurality of management domains, a network address, an amount of memory, or parameters that can be detected at runtime.

6. The system of claim 1, wherein the network service management module is further configured to:

forward the response to the requesting device, wherein the forwarded response instructs the requesting device to contact the responding server for future requests for the network service.

7. The system of claim 6, wherein at least one of the plurality of management domains comprises a primary server and one or more secondary servers, wherein the primary server is configured to:

receive the request for the network service;

determine which of the secondary servers has a lightest load when the request refers to the management domain of the primary server; and

forward the request to the secondary server having the lightest load.

8. The system of claim 1, wherein at least one of the plurality of management domains comprises a plurality of servers arranged as a server cluster, wherein the plurality of servers in the server cluster appear as a single virtual server to other devices in the network.

9. A method for providing a device access to a correct instance of a network service, comprising:

receiving, at a server located in at least one of a plurality of management domains communicatively coupled to each other via a network, a request for a network service from at least one of a plurality of managed devices, each of the plurality of managed devices having membership in a particular one of the plurality of managements domains communicatively coupled to one another via the network, wherein the receiving server comprises an instance of the network service requested by the at least one managed device, wherein the instance of the network service is responsible for communicating with the managed devices within the management domain of the receiving server;

providing, by the receiving server, the at least one requesting device access to the instance of the network service if the request refers to the management domain of the receiving server;

forwarding, by the receiving server, the request to one or more other servers in the network if the request does not refer to the at least one management domain of the receiving server; and

receiving a response to the forwarded request from one of the other servers in the network, wherein the response indicates that the requesting device has membership in the management domain of the responding server, wherein the receiving server acts as a proxy facilitating an exchange of information relating to the network service between the requesting device and the responding server.

10. The method of claim 9, further comprising determining whether the request refers to the management domain of the receiving server based on identity information in the request.

11. The method of claim 10, further comprising requesting the identity information when the request does not include the identity information.

12. The method of claim 10, wherein the identity information for the requesting device includes at least one of a unique attribute associated with the requesting device, indicia indicating membership in the particular one of the plurality of management domains, a network address, an amount of memory, or parameters that can be detected at runtime.

13. The method of claim 9, wherein forwarding the request to the other servers in the network includes using a referral list that provides information about the other servers in the network, wherein one or more of the servers in the referral list are located in other management domains.

14. The method of claim 9, further comprising:

forwarding the response to the requesting device, wherein the forwarded response includes instructions for the requesting device to contact the responding server for future requests for the network service.

15. The method of claim 14, wherein the requesting device uses the instructions in the response to access the network service from the responding server.