Global server for transmitting calling capability to mediator and local servers for requesting calling capability from the mediator to transmit resource capability to global server

• US 5,758,078 A
• Filed: 03/28/1997
• Issued: 05/26/1998
• Est. Priority Date: 02/14/1990
• Status: Expired due to Fees

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Kurita, Takayoshi, Kawaguchi, Miyoko
• Primary Examiner(s): Meky, Moustafa M.
• Application Number:
  US08/827,584
• Time in Patent Office: 424 Days
• Field of Search: 395/200.33, 395/200.57, 395/200.53, 395/200.55, 395/200.59, 395/200.62, 370/351, 370/400, 370/404, 370/406, 370/411, 370/471, 370/684
• US Class Current: 709/203
• CPC Class Codes: G06F 21/6236 between heterogeneous systems
• CPC Class Codes: G06F 2211/009 Trust
• CPC Class Codes: G06F 9/468 Specific access rights for resources, e.g. using capability register
• CPC Class Codes: G06F 9/54 Interprogram communication
• CPC Class Codes: H04L 63/18 using different networks or channels, e.g. using out of band channels cryptographic mechanisms or cryptographic arrangements for key distribution involving distinctive intermediate devices or communication paths H04L9/0827; cryptographic mechanisms or cryptographic arrangements for authentication using a plurality of channels H04L9/3215
• CPC Class Codes: H04L 69/24 Negotiation of communication capabilities
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

In a system for establishing a communication path between one global server and a plurality of local servers and transmitting a request for processing a message through the communication path in a closely coupled computer system, the system includes, a first capability which is issued from the global server or the local server to an arbitrary client to receive the request transmitted from the arbitrary client, a second capability which is issued from the global server or local server to a specified server to establish the communication path ensuring security of the message from the specified server, and a message communication unit for transmitting the message between the global server and the local server by using the first and second capability. The system also includes a destination intermediation unit for registering the first capability and informing the first capability to the local server to intermediate the communication between the global server and the local server. During operation of the system, the global server requests the registration of the first capability from the destination intermediation unit, the local server acquires the first capability from the destination intermediation unit, and the local server requests the establishment of the communication path from the local server to the global server by using the second capability.

Claims

1. An apparatus for establishing a communication path and processing a request for transmitting a message through the communication path in a closely coupled computer system, the apparatus comprising:

a global server for transmitting a calling capability to a mediator, said calling capability including an identification data used for communicating with said global server; and

a plurality of local servers, operatively coupled to the global server,

wherein each of said plurality of local servers starts up independently, requests said calling capability to said mediator, and transmits a resource capability with a resource identifier to said global server based on said calling capability, said resource capability including an identification data used for communicating with said local server;

wherein said mediator storing said calling capability transmitted from said global server and transmitting said calling capability to one of said plurality of local servers when any local server requests; and

wherein said global server manages a relationship between a resource capability and a resource managed by one of said plurality of local servers.

2. A system for establishing a communication path as claimed in claim 1, wherein said global server includes a control table constituted by a name of at least one of the local servers and a destination of the local server.

3. A method for establishing a communication path, comprising the steps of:

a) registering first capability data of a global server in a mediator, said first capability including an identification data used for communicating with said global server;

b) transmitting the first capability data from the mediator to a local server based on a first request from the local server; and

c) transmitting second capability data to the global server from the local server based on the first capability data, the second capability data including a destination of the local server to establish the communication path between the global server and the local server.

4. A method as claimed in claim 3, wherein said step (a) is only performed when the first capability data is determined to be authorized for registration.

5. A method as claimed in claim 3, wherein said step (c) is performed only if the local server is authorized to establish the communication path.

6. A method as claimed in claim 3, wherein the second capability data includes name data of a volume which is managed by the local server.

7. A method for establishing a communication path, comprising the steps of:

a) registering first capability data of a global server in a mediator, if authorized;

b) transmitting the first capability data from the mediator to a local server based on a first request from the local server;

c) transmitting second capability data to the global server from the local server based on the first capability data, the second capability data including a destination of the local server to establish the communication path between the global server and the local server;

d) transmitting a second request to use a volume from a client to the global server;

e) locating the second capability of the local server managing the volume, in the global server;

f) transmitting a third request from the global server to the local server based on the second capability data located in said step (e); and

g) accessing the volume using the local server, based on the third request.

8. An apparatus for establishing a communication path and processing a request for transmitting a message through the communication path in a closely coupled computer system, the apparatus comprising:

a global server, which is initialized independently, transmitting a calling capability, said calling capability including an identification data used for communicating with said global server;

a mediator receiving the calling capability from the global server and registering the calling capability in the mediator; and

a local server, which is initialized independently, requesting acquiring the call capability of the global server from the mediator after the local server has been initialized,

wherein the mediator transmits the calling capability to the local server, the local server transmits a resource capability including an identification data used for communicating with said local server together with a resource identifier to the global server, the global server registers the resource capability and the resource identifier, and the global server manages the relationship between the resource capability and the local server.

9. The apparatus as claimed in claim 8, wherein when the local server requires access to the global server, the global server determines whether the local server is permitted to have access based on the registered correspondence between the resource capability and resource identifiers.

10. An apparatus for establishing a communication path and processing a request for transmitting a message through the communication path in a closely coupled computer system, the apparatus comprising:

a global server transmitting a calling capability to a mediator, said calling capability including an identification data used for communicating with said global server; and

a plurality of local servers, operatively coupled to the global server,

wherein each of said plurality of local servers power up independently, requests said calling capability from said mediator, and transmits a resource capability with a resource identifier directly to said global server,

wherein said mediator stores said calling capability transmitted from said global server and transmits said calling capability to one of said plurality of local servers when any local server requests said calling capability of said global server, and

wherein said global server manages a relationship between a resource capability and a resource managed by one of said plurality of local servers.