(19)
(11) EP 2 285 071 B8

(12) CORRECTED EUROPEAN PATENT SPECIFICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 B1)

(48) Corrigendum issued on:
21.08.2013 Bulletin 2013/34

(45) Mention of the grant of the patent:
15.05.2013 Bulletin 2013/20

(21) Application number: 10170078.9

(22) Date of filing: 20.07.2010
(51) International Patent Classification (IPC): 
H04L 29/12(2006.01)
 H04L 29/08(2006.01)

(54)

Gateway system and control method for proxy servers load balancing

Gateway-System und Steuerverfahren für Proxy-Server Belastungsausgleich

Système de passerelle et procédé de contrôle pour l'équilibrage de charge de serveurs proxy

(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

(30) Priority: 10.08.2009 JP 2009185624

(43) Date of publication of application:
16.02.2011 Bulletin 2011/07

(73) Proprietor: Hitachi, Ltd.
Tokyo 100-8280 (JP)

(72) Inventor:
  • Toumura, Kunihiko c/o Hitachi, Ltd., Intellectual Property Group,
    Tokyo 100-8220 (JP)

(74) Representative: MERH-IP Matias Erny Reichl Hoffmann 
Paul-Heyse-Strasse 29
80336 München
80336 München (DE)


(56) References cited: : 
WO-A2-01/84800
   
  • KARGER D ET AL: "Web caching with consistent hashing" 17 May 1999 (1999-05-17), COMPUTER NETWORKS, ELSEVIER SCIENCE PUBLISHERS B.V., AMSTERDAM, NL LNKD- DOI:10.1016/S1389-1286(99)00055-9, PAGE(S) 1203 - 1213 , XP004304549 ISSN: 1389-1286 * Chapter 3 *
  • Arthur Goldberg: "Lecture 8b: Proxy Server Load Balancing" March 2004 (2004-03), XP002609100 Computer Science Department New York University Retrieved from the Internet: URL:http://www.cs.nyu.edu/artg/internet/Sp ring2004/lectures/lec_8b.pdf [retrieved on 2010-11-10]
  • Keith W. Ross: "Hash-Routing for Collections of Shared Web Caches" September 1997 (1997-09), XP002609101 Retrieved from the Internet: URL:http://citeseerx.ist.psu.edu/viewdoc/d ownload?doi=10.1.1.13.821&rep=rep1&type=pd f [retrieved on 2010-11-10]
   
Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).