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Method and apparatus for configuring routing paths of a network communicatively interconnecting a number of processing elements
| Details |
Inventors: Mattson, H. David; Watson, William J.; Garcia, David J.; Sonnier, David P.;
Assignee: Tandem Computers Incorporated (Cupertino, CA)
Primary Examiner: Meky; Moustafa M.
Assistant Examiner: Le; Hieu C.
Attorney, Agent or Firm: Townsend and Townsend and Crew LLP
A multiple processing system, comprises at least a pair of processor units communicatively connected to a number of peripheral devices through a network that includes routing devices interconnected to route information in the form of message packets sent between the processor units and peripheral devices. Data describing the topographical interconnections of the system elements is maintained with the system. A service processor accesses the data, determines therefrom the topographical interconnections forming the network, assigns addresses/identifications to the system elements, and configures the router devices to establish the most direct routes between system elements for message packets sent on the network. |
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DETAILED DESCRIPTION Broadly, the invention is directed to a method, and apparatus for implementing that method, for determining first the topographical communication paths available to a processing system for transferring information between system elements of the system.
Having determined that topology, expeditious routes can then be determined between pairs of the system elements and identifications or addresses assigned each system element capable of sending and/or receiving information.
The invention is herein disclosed as being employed by the processing system described in hereinabove-identified U.
S.
Pat.
No.
5,574,849.
According to the present invention, predetermined groups of the system elements of the processing system are accompanied by a storage member accessible by a service processor system.
The system elements may include multiple processors, input/output (I/O) devices, router devices, or interconnective elements such as a printed-wire backplane structure.
The storage member for each group of storage elements contains information describing the system elements of the group and the network interconnections of each system element within the group.
The storage member for the interconnective device contains information that describes the network paths between the groups of system elements that it interconnects.
When the processing system is brought on-line (i.
e.
, powered-up), the service processor system will access the stored information from the storage members associated with each group of system elements and the interconnect.
With this information, the service processor can determine the network path topology of the system that is available for transferring information/data.
Equipped with this topology information, the service processor system can assign identifications (ID; i.
e.
, addresses) to each of the data transmitting/receiving system elements to identify the source and destination points of message packets.
Next, routes can be assigned by writing the routing tables of the router devices with routing information that will ensure that message packets will be sent by the shortest network path between any source and destination system element pair
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