Processing

Please wait...

Settings

Settings

Goto Application

1. WO1997024886 - COMMUNICATIONS SYSTEM AND METHOD PROVIDING OPTIMAL RESTORATON OF FAILED PATHS

Publication Number WO/1997/024886
Publication Date 10.07.1997
International Application No. PCT/US1996/020143
International Filing Date 30.12.1996
Chapter 2 Demand Filed 29.07.1997
IPC
H04L 12/56 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
54Store-and-forward switching systems
56Packet switching systems
H04Q 3/00 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
QSELECTING
3Selecting arrangements
CPC
H04L 45/28
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
45Routing or path finding of packets in data switching networks
28Route fault recovery
H04L 45/32
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
45Routing or path finding of packets in data switching networks
32Flooding
H04Q 3/0079
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
QSELECTING
3Selecting arrangements
0016Arrangements providing connection between exchanges
0062Provisions for network management
0075Fault management techniques
0079involving restoration of networks, e.g. disaster recovery, self-healing networks
Applicants
  • MCI COMMUNICATIONS CORPORATION [US]/[US]
Inventors
  • ALLEN, John, David
  • BENGSTON, Lee, D.
Agents
  • KESSLER, Edward, J.
Priority Data
08/580,71829.12.1995US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) COMMUNICATIONS SYSTEM AND METHOD PROVIDING OPTIMAL RESTORATON OF FAILED PATHS
(FR) SYSTEME ET PROCEDE DE COMMUNICATION DONNANT UNE RESTAURATION OPTIMALE DES CHEMINS DEFECTUEUX
Abstract
(EN)
A system and method for restoring communications between a pair of nodes, between which communications have been broken, in a network. The method comprises the steps of designating one of the nodes a SENDER node and the other a CHOOSER node creating a forward restoration signature having a unique priority; upon receipt of a forward restoration signature at a TANDEM node, modifying and selectively transmitting the forward restoration signature based on its priority; upon receipt of a forward restoration signature at a spare port on the CHOOSER node, choosing the restoration path indicated by the received forward restoration signature, connecting the working port to the spare port, and transmitting a reverse restoration signature having the same priority as the forward restoration signature; and on receipt of a reverse restoration signature at a spare port on the SENDER node, connecting the spare port to the working port, thereby restoring communications between the pair of nodes.
(FR)
Système et procédé permettant de restaurer dans un réseau les communications entre une paire de noeuds entre lesquels les communications ont été interrompues. Le procédé comprend les étapes suivantes: on désigne l'un des noeuds comme étant un noeud EXPEDITEUR et l'autre comme étant un noeud SELECTIONNEUR, on crée une signature de restauration directe ayant une priorité unique; après réception d'une signature de restauration directe au niveau d'un noeud en TANDEM, on modifie et on émet sélectivement la signature de restauration directe sur la base de sa priorité; après réception d'une signature de restauration directe au niveau d'un port de réserve du noeud SELECTIONNEUR, on choisit le chemin de restauration indiqué par la signature de restauration directe reçue, on relie le port de travail au port de réserve, et on émet une signature de restauration inverse ayant la même priorité que la signature de restauration directe; et après réception d'une signature de restauration inverse au niveau d'un port de réserve du noeud EXPEDITEUR, on relie le port de réserve au port de travail, ce qui restaure les communications entre la paire de noeuds.
Also published as
Latest bibliographic data on file with the International Bureau