Atm network with ring architecture

Details Atm network with ring architecture Atm network with ring architecture

H - Electricity

04

L

H04L 12/42 (2006.01) H04L 12/43 (2006.01) H04L 12/56 (2006.01) H04Q 11/04 (2006.01)

Patent

CA 2244073

A communications network comprises a plurality of nodes interconnected by a pair of packet-based rings, for example ATM rings. At each said node there is a ring interface comprising a device for extracting packets from either ring destined for that node, a device for adding packets from that node to either ring, and a device for passing directly through packets on each ring not destined for that node. This arrangement establishes a virtual mesh structure with offers good fault recovery without unnecessary wastage of bandwidth.

L'invention concerne un réseau de télécommunication doté d'une pluralité de noeuds reliés entre eux par une paire d'anneaux en mode paquets (par exemple, anneau ATM). Au niveau de chaque noeud, on trouve une interface d'anneau comprenant un dispositif d'extraction des paquets destinée au noeud considéré, à partir de l'un ou l'autre des deux anneaux, un dispositif d'adjonction des paquets depuis le noeud en question sur l'un des deux anneaux, et un dispositif permettant de franchir directement sur chaque anneau les paquets qui ne sont pas destinés au noeud visé. Cette configuration permet d'établir une structure maillée virtuelle qui offre une bonne récupération en cas de défaillance, sans gaspillage exagéré de largeur de bande.

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