Method and apparatus for non-disruptive addition of a new...

H - Electricity – 04 – L

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H04L 29/14 (2006.01) H04L 12/24 (2006.01) H04L 12/56 (2006.01)

Patent

CA 2334972

A method and apparatus for the non-disruptive addition of one or more nodes to an active inter-nodal network is provided. A telecommunications switching system includes a plurality of nodes interconnected by an inter-nodal network which carries packetized information among the nodes. A host which issues various control instructions is connected to at least one node in the system. When one or more new nodes are to be added to the system, the two nodes adjacent to the location selected for the new node are instructed to begin a synchronized routine for simultaneously beginning to temporarily operate in a special loopback mode of operation whic h allows telecommunications traffic to continue to travel on the inter-nodal network while the new node or nodes are being physically connected into the system. Thereafter, a sequence of instructions provides for a synchronized routine for both neighbor nodes to return to open operating mode from loopback mode simultaneously. The instruction sequences are issued by a host and a master node of the system for imple-menting the non-disruptive addition of the new node or nodes to the system.

La présente invention concerne un procédé et un dispositif d'addition non perturbatrice d'un ou plusieurs noeuds à un réseau inter-nodal actif. Un système de commutation de télécommunications comprend une pluralité de noeuds interconnectés au moyen d'un réseau inter-nodal qui transporte une information par paquets aux noeuds. Un ordinateur central duquel partent des instructions variées de commande est relié à au moins un noeud du système. Lorsqu'un ou plusieurs nouveaux noeuds doivent être ajoutés au système, les deux noeuds adjacents à l'emplacement choisi pour le nouveau noeud reçoivent l'instruction de démarrage d'une routine synchronisée afin de commencer simultanément à fonctionner, temporairement, dans un mode spécial de bouclage qui permet la continuation du trafic des télécommunications sur le réseau inter-nodal alors que le ou les nouveaux noeuds sont physiquement en cours de connexion au système. Par la suite, une séquence d'instruction met en oeuvre une routine synchronisée permettant aux deux noeuds voisins de passer simultanément du mode de bouclage au mode opératoire ouvert. Les séquences d'instructions sont envoyées par un ordinateur central à partir d'un noeud du système aux fins de mettre en oeuvre, de manière non perturbatrice, l'addition d'un ou de plusieurs nouveaux noeuds au système.

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