Global Patent Index - EP 1491005 A1

EP 1491005 A1 2004-12-29 - METHOD FOR CHANGING PMTU ON DYNAMIC IP NETWORK AND APPARATUS USING THE METHOD

Title (en)

METHOD FOR CHANGING PMTU ON DYNAMIC IP NETWORK AND APPARATUS USING THE METHOD

Title (de)

VERFAHREN ZUR PMTU-ÄNDERUNG IN EINEM DYNAMISCHEN IP-NETZWERK UND DAS VERFAHREN VERWENDENDE VORRICHTUNG

Title (fr)

PROCEDE DE MODIFICATION D'UNE PMTU DANS UN RESEAU IP DYNAMIQUE ET APPAREIL UTILISANT CE PROCEDE

Publication

EP 1491005 A1 (EN)

Application

EP 03745469 A

Priority

  • KR 0300383 W
  • KR 20020034132 A
  • US 36832902 P

Abstract (en)

[origin: WO03084145A1] A method for discovery and change of a PMTU between a source node and a destination node on a dynamic IP network comprises generating a PMTU discovery packet having a MTU information storage space in which an MTU value on a routing path between the source node and the destination node is stored; transmitting the generated PMTU discovery packet to the destination node; and if a response packet to the PMTU discovery packet from the destination node is received, changing the PMTU according to MTU information contained in the response packet, wherein the MTU value stored in the MTU information storage space is compared with a link MTU value on a path which the PMTU discovery packet traverses, and the smaller one of the stored MTU value and the link MTU value on the path which the packet traverses is stored in the MTU information storage space.

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

H04L 12/28

IPC 8 full level (invention and additional information)

H04L 12/701 (2013.01); H04L 12/721 (2013.01); H04L 29/06 (2006.01)

CPC (invention and additional information)

H04L 69/16 (2013.01); H04L 45/00 (2013.01); H04L 45/26 (2013.01); H04L 69/161 (2013.01); H04L 69/167 (2013.01)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR

EPO simple patent family

WO 03084145 A1 20031009; AU 2003215923 A1 20031013; CN 1647454 A 20050727; EP 1491005 A1 20041229; EP 1491005 A4 20060913

INPADOC legal status


2008-08-06 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20080213

2007-10-31 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20071002

2006-09-13 [A4] DESPATCH OF SUPPLEMENTARY SEARCH REPORT

- Effective date: 20060814

2004-12-29 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20040925

2004-12-29 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

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

2004-12-29 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Countries: AL LT LV MK RO