WO1997029424B1 - Method and apparatus for connecting a client node to a server node based on load levels - Google Patents
Method and apparatus for connecting a client node to a server node based on load levelsInfo
- Publication number
- WO1997029424B1 WO1997029424B1 PCT/US1997/001474 US9701474W WO9729424B1 WO 1997029424 B1 WO1997029424 B1 WO 1997029424B1 US 9701474 W US9701474 W US 9701474W WO 9729424 B1 WO9729424 B1 WO 9729424B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- network information
- information server
- server node
- node
- network
- Prior art date
Links
- 230000000875 corresponding Effects 0.000 claims abstract 6
- 238000000034 method Methods 0.000 claims 30
- 230000004044 response Effects 0.000 claims 3
Abstract
A network including at least two server nodes, a master network information server node and a client node in communication with each other. The master network information server node contains a list of network addresses and respective load information corresponding to each of the server nodes. In one embodiment the client node is directed to use a server node on which to execute an application based on the load information stored on the master network information server node. A method is described which includes the steps of requesting an available server from a master network information server node and connecting the client node to an available server node based on the load levels.
Claims
1. In a networked system including network information server nodes, one of the network information server nodes dynamically electable as a master network information server node, a network information server node comprising:
a first process for allowing dynamic election of the network information server node as the master network information server node, the first process receiving transmitted election criteria and comparing the received election criteria with stored election criteria; a second process for constructing a load table after the network information server node is elected as the master information network server node, the load table constructed by storing a plurality of network addresses and a plurality of load information corresponding to a respective one of said plurality of network addresses in a memory element; and a third process receiving client requests and responding to said client requests based on the constructed load table.
2. In a networked system including network information server nodes, one of the network information server nodes dynamically electable as a master network information server node, a network information server node comprising:
a first process for allowing dynamic election of the network information server node as the master network information server node, the first process receiving transmitted election criteria and comparing the received election criteria with stored election criteria; a second process for constructing a load table after the network information server mode is elected as the master network information server mode, the load table constructed by storing a plurality of network addresses and load information associated with each of said plurality of network addresses in a memory element; and a third process receiving client requests and responding to said client requests based on the constructed load table.
3. In a networked system including network information server nodes, one of the network information server nodes dynamically electable as a master network information server node, a network information server node comprising:
a first process for allowing dynamic election of the network information server node as the master network information server node, the first process receiving transmitted election criteria and comparing the received election criteria with stored election criteria; a second process for constructing a load table after the network information server node is elected as the master network information server node, the load table constructed by storing an entry corresponding to a respective node in a memory element, each entry including: - 18 -
a network address of a respective one of said plurality of network nodes, and load information associated with said respective one of said plurality of network nodes; a third process receiving client requests and responding to each of said client requests with entries of said load table corresponding to network nodes which satisfy said each of said client requests.
4. A network comprising: at least two server nodes; a master network information server node in communication with said at least two server nodes, said master network information server node comprising a memory comprising a data table and at least one election criteria for allowing said network information server node to be dynamically selected, said data table having an entry for each of said at least two server nodes, each of said entries including: an address corresponding to a respective one of said at least two server nodes; and load information corresponding to said respective one of said at least two server nodes; and a client node in communication with said master network information server node and said at least two server nodes, said client node executing an application on one of said at least two server nodes in response to said load information obtained from said master network information server node.
5. The network of claim 4 further comprising a plurality of client nodes in communication with said master network information server node.
6. The network of claim 4 further comprising at least two network information server nodes wherein one of said at least two network information server nodes is a master network information server node.
7. The network of claim 4 wherein said at least two server nodes are grouped into clusters.
8. The network of claim 6 wherein one of said at least two network information server nodes is a gateway node.
9. The network of claim 8 wherein said gateway node is a master network information server node.
10. The network of claim 6 wherein said master network information server node is elected by an election process comprising the steps of: broadcasting an election datagram to said at least two network information server nodes, said election datagram comprising election criteria; and electing a master network information server node in response to said election criteria.
AMENDED SHEET {ARTICLE 19) - 19 -
11. The network of claim 6 wherein said master network information server node broadcasts a declare datagram to detect multiple master network information server nodes using the same transport protocol.
12. The network of claim 4 comprising a second network information server node having a different network transport protocol from said first network information server node, wherein each of said network information server nodes is a master network information server node.
13. The election process of claim 10 wherein said election process occurs after an event selected from the group of events consisting of a system reboot, a master network information server node failing to respond with an acknowledge after being sent a server update datagram, a master network information server node failing to respond to a client request, at least two master network information server nodes configured with the same transport being detected, and a new server node appearing on said network.
14. A method of connecting a client process to a server process on one of at least two available servers, said method comprising the steps of: determining which of the at least two server nodes is the master network information node; requesting an available server from the master network information server node; and connecting to said server process on one of said at least two available servers in response to said load levels as stored on the master network information server node.
15. The network information server node of claim 1 wherein said first process, said second process, and said third process comprise a single process.
16. The network information server node of claim 2 wherein said first process, said second process, and said third process comprise a single process.
17. The network information server node of claim 3 wherein said first process, said second process, and said third process comprise a single process.
412JDL1545/13.393001-1
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP97906447A EP0880741B1 (en) | 1996-02-09 | 1997-02-05 | Method and apparatus for connecting a client node to a server node based on load levels |
| JP9528563A JP2000504863A (en) | 1996-02-09 | 1997-02-05 | Method and apparatus for connecting a client node to a server node based on load level |
| AU21140/97A AU722469B2 (en) | 1996-02-09 | 1997-02-05 | Method and apparatus for connecting a client node to a server node based on load levels |
| CA 2245791 CA2245791C (en) | 1996-02-09 | 1997-02-05 | Method and apparatus for connecting a client node to a server node based on load levels |
| DE69706649T DE69706649T2 (en) | 1996-02-09 | 1997-02-05 | METHOD AND DEVICE FOR CONNECTING A CLIENT NODE TO A SERVER NODE ACCORDING TO THE LOAD LEVELS |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/598,800 US5862348A (en) | 1996-02-09 | 1996-02-09 | Method and apparatus for connecting a client node to a server node based on load levels |
| US08/598,800 | 1996-02-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1997029424A1 WO1997029424A1 (en) | 1997-08-14 |
| WO1997029424B1 true WO1997029424B1 (en) | 1997-10-02 |
Family
ID=24396968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1997/001474 WO1997029424A1 (en) | 1996-02-09 | 1997-02-05 | Method and apparatus for connecting a client node to a server node based on load levels |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5862348A (en) |
| EP (1) | EP0880741B1 (en) |
| JP (1) | JP2000504863A (en) |
| AU (1) | AU722469B2 (en) |
| DE (1) | DE69706649T2 (en) |
| ES (1) | ES2160325T3 (en) |
| WO (1) | WO1997029424A1 (en) |
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| FR2727540B1 (en) * | 1994-11-30 | 1997-01-03 | Bull Sa | LOAD DISTRIBUTION ASSISTANCE TOOL FOR A DISTRIBUTED APPLICATION |
| US5644720A (en) * | 1995-07-31 | 1997-07-01 | West Publishing Company | Interprocess communications interface for managing transaction requests |
-
1996
- 1996-02-09 US US08/598,800 patent/US5862348A/en not_active Expired - Lifetime
-
1997
- 1997-02-05 EP EP97906447A patent/EP0880741B1/en not_active Expired - Lifetime
- 1997-02-05 AU AU21140/97A patent/AU722469B2/en not_active Expired
- 1997-02-05 DE DE69706649T patent/DE69706649T2/en not_active Expired - Lifetime
- 1997-02-05 JP JP9528563A patent/JP2000504863A/en active Pending
- 1997-02-05 WO PCT/US1997/001474 patent/WO1997029424A1/en active IP Right Grant
- 1997-02-05 ES ES97906447T patent/ES2160325T3/en not_active Expired - Lifetime
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