SYSTEM AND METHOD FOR FLOW TERMINATION OF A TCP SESSION
First Claim
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1. A method for terminating a Transmission Control Protocol (TCP) session by a Gateway GPRS Support Node (GGSN) in a communication network, comprising:
- receiving a message from a source node addressed to a destination node;
modifying the message;
storing flow information related to a session associated with the message;
forwarding the modified message to the destination node;
deleting the stored flow information; and
initiating a termination of the session at the source node and the destination node, in response to deleting the stored flow information.
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Abstract
A Gateway GPRS Support Node initiates the termination of a session at both session endpoints in response to releasing flow information for an idle flow when performing a transparent content enrichment procedure. The Gateway GPRS Support Node instructs each of the source and destination nodes to terminate the session in an effort to mitigate the occurrence of a TCP signaling storm in a communication network. The Gateway GPRS Support Node can observe a mismatch condition in TCP messages and invoke procedures to prevent a signaling storm.
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20 Claims
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1. A method for terminating a Transmission Control Protocol (TCP) session by a Gateway GPRS Support Node (GGSN) in a communication network, comprising:
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receiving a message from a source node addressed to a destination node; modifying the message; storing flow information related to a session associated with the message; forwarding the modified message to the destination node; deleting the stored flow information; and initiating a termination of the session at the source node and the destination node, in response to deleting the stored flow information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A Gateway GPRS Support Node (GGSN) comprising:
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a communication interface for receiving a message from a source node addressed to a destination node; a memory for storing flow information related to a session associated with the received message; and a processor for modifying the received message, for instructing the communication interface to forward the modified message to the destination node, for instructing the memory to delete the stored flow information, and for initiating a termination of the session at the source node and the destination node in response to the deletion of the stored flow information. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification