Determining a path through a managed network

Details Determining a path through a managed network Determining a path through a managed network

H - Electricity

04

L

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

Patent

CA 2503061

A method and apparatus that provides for determining a packet transmission path for a managed network (100) using Internet Protocol is disclosed. A network management station (102) can use a source-routed IP path tracing operation to determine a packet transmission path for a managed network (100) even when an end-station (144, 146, 150) from which the packet emanates (source node) in the managed network (100) does not support source-routed IP path tracing operation by determining a first gateway (110, 112, 114, 126, 140) used by the source node to reach the packet's destination (destination node). Further, a second gateway (110, 112, 114, 126, 140) is determined based on the first gateway (110, 112, 114, 126, 140) and destination node. The second gateway is used as the first hop from the source node to the destination node when the subnet (104, 106, 108, 120, 122, 124, 132, 134, 136, 148) associated with the source node is identical to the subnet associated with the second gateway.

L'invention concerne un procédé et un appareil servant à déterminer un chemin de transmission de paquets de données pour un réseau géré sur la base d'un protocole Internet (IP). Une station de gestion de réseau peut utiliser une opération de traçage de chemin IP à routage source pour déterminer un chemin de transmission de paquets pour un réseau géré, même lorsqu'une station terminale émettant le paquet (noeud source) dans le réseau géré ne supporte pas l'opération de traçage de chemin IP à routage source en déterminant une première passerelle utilisée par le noeud source pour atteindre la destination du paquet (noeud destination). En outre, une deuxième passerelle, déterminée sur la base de la première passerelle et du noeud destination, sert de premier bond du noeud source au noeud destination lorsque le sous-réseau associé au noeud source est identique au sous-réseau associé à la deuxième passerelle.

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