Internal routing through multi-staged atm node

Details Internal routing through multi-staged atm node Internal routing through multi-staged atm node

H - Electricity

04

L

H04L 12/56 (2006.01)

Patent

CA 2354524

An internal routing tag (82) is appended to a payload of a received ATM cell upon ingress of the ATM cell into a multi-stage ATM node (20). The routing tag comprises routing information for routing the payload of the received ATM cell through plural stages (22) of the multi-stage node. Preferably the routing information comprises a list of destination addresses, e.g., utopia address of physical units (26) in the multi-stage ATM node. Use of the internalrouting tag streamlines connection setup, reduces the number of internal control paths required, and abviates VPI/VCI conversion at the plural stages of the multi- stage node.

L'invention concerne une étiquette d'acheminement interne (82) qui sajoute à une charge utile d'une cellule ATM reçue après incorporation de cette dernière dans un noeud ATM multiétagé (20). L'étiquette d'acheminement comprend des informations d'adresse servant à acheminer la charge utile de la cellule ATM reçue à travers plusieurs étages (22) du noeud multiétagé. De préférence, les informations d'adresse comprennent une liste d'adresses de destination (p. ex. des adresses utopiques d'unités physiques (26) dans le noeud ATM multiétagé). L'utilisation de l'étiquette d'acheminement simplifie l'établissement des connexions, réduit le nombre de chemins de contrôle internes requis, et rend inutile la conversion au niveau de la pluralité d'étages du noeud multiétagé.

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