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1. WO1996002994 - ATM SWITCH IN DUAL SWITCH PLANE OPERATION

Publication Number WO/1996/002994
Publication Date 01.02.1996
International Application No. PCT/CA1995/000136
International Filing Date 15.03.1995
Chapter 2 Demand Filed 07.07.1995
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 11/04 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
QSELECTING
11Selecting arrangements for multiplex systems
04for time-division multiplexing
CPC
H04L 2012/5627
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
54Store-and-forward switching systems
56Packet switching systems
5601Transfer mode dependent, e.g. ATM
5625Operations, administration and maintenance [OAM]
5627Fault tolerance and recovery
H04L 49/1523
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
49Packet switching elements
15Interconnection of switching modules
1515Non-blocking multistage, e.g. Clos
1523Parallel switch fabric planes
H04L 49/153
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
49Packet switching elements
15Interconnection of switching modules
1515Non-blocking multistage, e.g. Clos
1523Parallel switch fabric planes
153ATM switching fabrics having parallel switch planes
H04L 49/1553
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
49Packet switching elements
15Interconnection of switching modules
1553Interconnection of ATM switching modules, e.g. ATM switching fabrics
H04L 49/503
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
49Packet switching elements
50Overload detection; Overload protection
501Overload detection
503Policing
H04L 49/506
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
49Packet switching elements
50Overload detection; Overload protection
505Corrective Measures, e.g. backpressure
506Backpressure
Applicants
  • NORTHERN TELECOM LIMITED [CA/CA]; World Trade Center of Montreal 8th floor 380 St. Antoine Street West Montreal, H2Y 3Y4, CA
Inventors
  • McGILL, Richard, Thomas; CA
Agents
  • TOYOOKA, Yoshiharu; Northern Telecom Limited Patent Dept. P.O. Box 3511, Station "C" Ottawa, Ontario K1Y 4H7, CA
Priority Data
08/275,17014.07.1994US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ATM SWITCH IN DUAL SWITCH PLANE OPERATION
(FR) COMMUTATEUR ATM UTILISE SELON UN MODE DE FONCTIONNEMENT A PLAN DE COMMUTATION DOUBLE
Abstract
(EN)
A novel ATM switch of dual switch plane operation and method of switching traffic in unit cells among ports in dual switch planes are disclosed. The ATM switch of the invention is plane protected in that a redundant switch plane is provided. In the switch, traffic cells are tagged either symmetric or asymmetric at an ingress port so that a destination port is able to properly gather correct cells even when switch planes develop faults or quality degradation.
(FR)
Nouveau commutateur à mode de transfert asynchrone (ATM) utilisé selon un mode de fonctionnement à plan de commutation double, et procédé de commutation de trafic dans des cellules unitaires entre des ports dans des plans de commutation doubles. Le commutateur ATM selon l'invention est protégé contre les défauts de plan dans la mesure où un plan de commutation redondant est prévu. Dans ce commutateur, des cellules de trafic sont étiquetées comme étant soit symétriques soit asymétriques au niveau d'un port d'entrée, de sorte qu'un port destinataire soit capable de rassembler de manière appropriée les cellules correctes, même lorsque les plans de commutation présentent des défauts ou une dégradation de la qualité.
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