Global patent index - EP 0990366 A1

EP 0990366 A1 2000-04-05 - METHOD FOR CONSTRUCTING AND OPERATING A REDUNDANT COMMUNICATIONS NETWORK, AND COMMUNICATIONS NETWORK FOR TRANSPORTING DATA PACKETS

Title (en)

METHOD FOR CONSTRUCTING AND OPERATING A REDUNDANT COMMUNICATIONS NETWORK, AND COMMUNICATIONS NETWORK FOR TRANSPORTING DATA PACKETS

Title (de)

VERFAHREN ZUM AUFBAU UND BETRIEB EINES REDUNTANTEN KOMMUNIKATIONSNETZES SOWIE KOMMUNIKATIONSNETZ ZUM TRANSPORT VON DATENPAKETEN

Title (fr)

PROCEDE POUR ETABLIR ET EXPLOITER UN RESEAU DE COMMUNICATION REDONDANT, ET RESEAU DE COMMUNICATION POUR LE TRANSPORT DE PAQUETS DE DONNEES

Publication

EP 0990366 A1 (DE)

Application

EP 98936161 A

Priority

  • DE 9801614 W
  • DE 19725388 A

Abstract (en)

[origin: DE19725388A1] The invention relates to a method, a structure and a communications network for transporting data packets, receive addresses being contained in said data packets. The communications network consists of linked bi-directional rings with so-called multiple nodes which switch between adjacent rings, and so-called single nodes which are arranged along the periphery of a ring as so-called add-drop multiplexers. The network is provided with a tree structure during initialisation. The multiple nodes are the nodes of said tree structure and each branch consists of two segments which accommodate the add-drop multiplexers (2, 3, 5). All of the data packets follow the shortest paths in relation to said tree structure, and the routing information provided at the initialisation stage is sufficient so that in the case of a breakdown in one segment only the single nodes of the segment and the at most two adjacent multiple nodes have to make new routing decisions. A multiple node is able to do so just from knowing the port connected to the defective segment, and the single node concerned is able to do so just from knowing which single nodes can still be reached in the direction of the defect.

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

H04Q 11/04; H04L 12/437; H04L 12/44; H04L 12/56

IPC 8 full level (invention and additional information)

H04L 12/46 (2006.01); H04L 12/753 (2013.01)

CPC (invention and additional information)

H04L 12/4637 (2013.01); H04L 45/48 (2013.01)

Citation (search report)

See references of WO 9858516A1

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

DE 19725388 A1 19981217; AU 8531898 A 19990104; EP 0990366 A1 20000405; WO 9858516 A1 19981223

INPADOC legal status

2003-07-02 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20021231

2000-04-05 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19991125

2000-04-05 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

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