Graceful shutdown of network resources in data networks

Details Graceful shutdown of network resources in data networks Graceful shutdown of network resources in data networks

2004-02-10

2008-11-25

Sam, Phirin (Department: 2619)

Multiplex communications

Data flow congestion prevention or control

Flow control of data transmission through a network

C370S236000, C370S390000, C370S392000

Reexamination Certificate

active

07457248

ABSTRACT:
A technique gracefully shuts down network resources, such as nodes, interfaces and protocols, in a data network in a manner that minimizes network disruption. The technique may be used with both connectionless and connection-oriented networking systems. A node gracefully shuts down a network resource associated with the node by i) notifying other nodes in the network that the resource is being gracefully shutdown, ii) waiting for a condition to occur, and iii) when the condition occurs, shutting down the resource. The condition may include the expiration of a predetermined amount of time and/or monitoring the resource to determine if the resource has reached a certain level of activity. In response to receiving a notification that a resource is being gracefully shutdown, a node takes action to reroute traffic around the resource. If no alternative route is available, the node may continue to route traffic to the resource until it is shut down.

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