| 摘要 |
Disclosed is a content based router, system and method of operation. Upon receipt of a data packet at in ingress router, the ingress router matches the content of the data packet against stored user subscriptions. In one embodiment, the content is described using XML data and the user subscriptions are defined by XML queries. The router assigns a routing label to the data packet based on the matching, and transmits the data packet to a second network router. Intermediate routers along the packets path then use the assigned label in combination with stored routing tables in order to determine next hop routing. Upon receipt at an egress router, the content of the message is matched against user subscriptions for those users serviced by the egress router, and the egress router provides the data packet to those end users whose subscriptions match the content. The assigned routing labels may define routing paths or routing trees.
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