METHOD OF AUTONOMIC REPRESENTATIVE SELECTION IN LOCAL AREA NETWORKS

• US 20150081782A1
• Filed: 11/26/2014
• Published: 03/19/2015
• Est. Priority Date: 08/26/2009
• Status: Active Grant

• Current Assignee: Kyndryl Incorporated
• Original Assignee: International Business Machines Corporation
• Inventors: Kobayashi, Kenji, Kuwahara, Takeshi
• Granted Patent: US 9,729,676 B2
• Time in Patent Office: Days
• US Class Current: 709/203
• CPC Class Codes: H04L 12/1854 with non-centralised forwarding system, e.g. chaincast
• CPC Class Codes: H04L 12/1886 with traffic restrictions for efficiency improvement, e.g. involving subnets or subdomains
• CPC Class Codes: H04L 45/00 Routing or path finding of packets in data switching networks routing or path finding in wireless networks H04W40/00
• CPC Class Codes: H04L 67/01 Protocols
• CPC Class Codes: H04L 69/16 Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04L 69/40 for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection management of faults, events, alarms or notifications in data switching networks H04L41/06

Abstract

A method and apparatus for selecting a client computer as a relay server to rebroadcast common application information that is broadcast from a server system over a network. The client computer is selected randomly to rebroadcast the User Datagram Protocol (UDP) information received from the server system and client computers receiving the UDP information from another client computer relay server on the network do not rebroadcast the information. If the client computer selected to rebroadcast the common information fails to rebroadcast, another client computer is randomly selected as a relay server and takes over rebroadcasting the common information.

Claims

1-8. -8. (canceled)

9-25. -25. (canceled)

26. A network system, comprising:

a network server arranged to broadcast common information to a plurality of clients in a network of clients and allow for rebroadcasting the common information by a selected client within a segment of clients of the network of clients to the other clients within the segment of clients;

a plurality of clients connected to the server through said network to receive the common information;

the segment of clients of the network of clients arranged to automatically select from among clients within said segment of clients of said network of clients at least one client to rebroadcast said common information to the remaining clients within said segment of clients;

the remaining clients within said segment of clients arranged to block rebroadcasting said common information from said network server when said at least one client is selected to rebroadcast said common information to said remaining clients within said segment of clients; and

said segment of clients arranged to automatically select another client within said segment of clients of said network of clients to rebroadcast said common information to the remaining client within said segment of clients should said at least one client fail to rebroadcast said coming information.

27. The network system as set forth in claim 26 wherein said at least one client automatically selected from among said clients within said segment of clients to rebroadcast said common information from said network server is selected from among said clients within said segment of clients by causing said segment of clients to each randomly generate a different fixed time intervals at each client for each client to rebroadcast said common information.

28. The network system as set forth in claim 27 wherein the client randomly generating the shortest time interval to rebroadcast said common information is selected from among said clients within said segment of clients for rebroadcasting said common information.

29. The network system as set forth in claim 28 wherein initial broadcast of said common information from said network server to said plurality of clients acts to cause each client within said segment of clients to rebroadcast said common information to each of the remaining clients within said segment of clients.

30. The network system as set forth in claim 29 wherein the client within said segment of clients each rebroadcasting said common information from said server is selected from among said plurality of clients within said segment to continue rebroadcasting said common information by randomly generating the shortest time interval to rebroadcast said common information.

31. The system network as set forth in claim 30 wherein each of the clients within said segment of clients randomly generating a different time interval to rebroadcast said common information has added thereto a fixed interval of time before each client rebroadcasts.

32. A client system for receiving common broadcast information from a network server;

said client system being one among a plurality of client systems each of which client system includes processing apparatus arranged to receive said common broadcast information and rebroadcast said common broadcast information;

said processor apparatus in said client system arranged to determine whether received common broadcast information originates from said network server or another client system from among said plurality of client systems and when said common broadcast information is received from another client system said processor apparatus does nothing with the received common broadcast information; and

said processor apparatus in each client system further arranged to initiate a rebroadcast operation of said common broadcast information received from said network server when said common broadcast information is not received from said another client system.

33. The client system as set forth in claim 32 wherein said rebroadcast operation starts after a fixed period of time with said fixed period of time occurring randomly.

34. The client system as set forth in claim 33 wherein said client system is selected to rebroadcast said common broadcast information when it is the first client system from among said plurality of client systems to rebroadcast said common broadcast information received from said network server.

35. The client system as set forth in claim 34 wherein subsequent failure of said selected client system to rebroadcast said common broadcast information acts to cause selection of another client system from among said plurality of client systems to rebroadcast said common broadcast information.

36. The client system as set forth in claim 35 wherein said common broadcast information is received using User Datagram Protocol.

37. A computer program product for enabling a client computer system, being one among a plurality of client computer systems in a network, to carry out rebroadcast decisions with regard to received common broadcast information from a network server in said network, the computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by said client computer system to:

receive said common broadcast information;

determine whether said received common broadcast information originates from said network server or from another client computer system from among said plurality of client computer systems;

do nothing when said common broadcast information is received from said another client computer system from among said plurality of client computer systems; and

initiate a rebroadcast operation when said common broadcast is not received from another client computer.

38. The computer program product for enabling a client computer system as set forth in claim 37 wherein said rebroadcast operations occurs after a fixed interval of time set randomly.

39. The computer program product for enabling a client computer system as set forth in claim 38 wherein said client computer system acts to rebroadcast said common broadcast information when it is the first client system from among said plurality of client computer systems to rebroadcast said common broadcast information.

40. The computer program product for enabling a client computer system as set forth in claim 39 wherein subsequent failure of said client system to rebroadcast said common broadcast information acts to cause another client system from among said plurality of client system to rebroadcast said common broadcast information.

41. The computer program product for enabling a client computer system as set forth in claim 40 wherein said common broadcast information is received using User Data Protocol.