Global Patent Index - EP 1236329 A1

EP 1236329 A1 2002-09-04 - OPTIMAL REQUEST ROUTING BY EXPLOITING PACKET ROUTERS TOPOLOGY INFORMATION

Title (en)

OPTIMAL REQUEST ROUTING BY EXPLOITING PACKET ROUTERS TOPOLOGY INFORMATION

Title (de)

OPTIMALES ROUTING VON ANFRAGEN DURCH DIE AUSNUTZUNG VON TOPOLOGY-INFORMATION

Title (fr)

ACHEMINEMENT DE DEMANDE OPTIMAL PAR EXPLOITATION D'INFORMATIONS TOPOLOGIQUES DE ROUTEURS DE PAQUETS

Publication

EP 1236329 A1 (EN)

Application

EP 00980633 A

Priority

  • US 0031990 W
  • US 16712399 P

Abstract (en)

[origin: WO0139470A1] A technique for redirecting client computer requests for content files to the closest replica of the requested content, by using anycast messaging. The request to resolve a domain name is forwarded as an anycast message to a name service provided by a group of name servers distributed in the network. The closest name server then responds to the anycast message by returning a unique network address for an associated content server that contains a replica of the requested content file. This scheme permits a client computer to subsequently establish higher level protocol access method, such as a Hyper Text Transfer Protocol (HTTP) request, to open a connection and deliver the content file replica, from a content server that is topologically close to the client, using only standard network protocols.

IPC 1-7 (main, further and additional classification)

H04L 29/06; H04L 29/12

IPC 8 full level (invention and additional information)

H04L 12/18 (2006.01); H04L 29/06 (2006.01); H04L 29/08 (2006.01); H04L 29/12 (2006.01)

CPC (invention and additional information)

H04L 12/18 (2013.01); H04L 29/12009 (2013.01); H04L 29/12047 (2013.01); H04L 61/15 (2013.01); H04L 67/1002 (2013.01); H04L 67/101 (2013.01); H04L 67/1038 (2013.01); H04L 69/16 (2013.01); H04L 69/161 (2013.01); H04L 69/163 (2013.01); H04L 69/164 (2013.01); H04L 67/1017 (2013.01)

Citation (search report)

See references of WO 0139470A1

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

WO 0139470 A1 20010531; AU 1786501 A 20010604; EP 1236329 A1 20020904

INPADOC legal status


2004-12-08 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20040602

2004-05-12 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION):

- Designated State(s): DE FR GB

2002-09-04 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020624

2002-09-04 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

2002-09-04 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI