| 摘要 |
<p>The present invention discloses a method, system and device for packet routing, and a method and system for choosing backup resources. The method for packet routing includes: updating busy levels of nodes at predetermined intervals; and choosing a packet receiving node according to a Distributed Hash Table (DHT) algorithm and the busy levels of nodes and sending a packet to the chosen packet receiving node. The system for packet routing includes a sending node and a routing node. The method for choosing backup resources includes: a state advertising node broadcasts the busy level of the local node to other nodes in one multicast group; and a backup resource choosing node chooses a proxy node according to the received busy levels of nodes. The system for choosing backup resources includes a state advertising node and a backup resource choosing node. With the present invention, a node chooses a packet receiving node with reference to the busy levels of nodes in its routing table, which balances the loads among the nodes and avoids the happening of network congestion.</p> |
