Technique for capturing information needed to implement transmission priority routing among heterogeneous nodes of a computer network
First Claim
1. A method for efficiently acquiring information used by first and second switching nodes of a heterogeneous network to implement transmission priority (TP) routing of data traffic over a connection network between end nodes of the network, the method comprising the steps of:
- establishing a bounded time interval during which a first switching node examines the data traffic over the network;
triggering monitoring the data traffic during the bounded time interval for a defined data packet in response to a predetermined triggering event; and
capturing a portion of the information from the defined data packet at the first switching node during the bounded time interval, the captured portion of information used to implement TP routing;
wherein the predetermined triggering event is a request issued by one node of the network to a second node of the network for the second node to compute a route through the network between the one node and a third node of the network.
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Abstract
A technique efficiently captures information required to create a filter used by switching nodes of a heterogeneous network to implement transmission priority routing of data traffic over a connection network between end nodes of the network. A bounded time interval, i.e., a time window, is established during which a first switching node monitors the traffic over the network to capture portions of the required information contained in a defined data packet. Monitoring of data traffic during the time window is triggered by a predictable event, the occurrence of which is communicated to the first switching node by a hybrid node of the network. In addition to providing this "triggering" communication, the hybrid node also provides the first switching node with the remaining portion of the required information.
147 Citations
23 Claims
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1. A method for efficiently acquiring information used by first and second switching nodes of a heterogeneous network to implement transmission priority (TP) routing of data traffic over a connection network between end nodes of the network, the method comprising the steps of:
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establishing a bounded time interval during which a first switching node examines the data traffic over the network; triggering monitoring the data traffic during the bounded time interval for a defined data packet in response to a predetermined triggering event; and capturing a portion of the information from the defined data packet at the first switching node during the bounded time interval, the captured portion of information used to implement TP routing; wherein the predetermined triggering event is a request issued by one node of the network to a second node of the network for the second node to compute a route through the network between the one node and a third node of the network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. Apparatus for capturing information required to implement transmission priority (TP) routing of data traffic over a network coupling network devices, the apparatus comprising:
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a switching node coupled to the network, the switching node monitoring the data traffic during a time window to capture a portion of the required information contained in a defined data packet; and a hybrid node coupled to the network and configured to communicate occurrence of a predictable triggering event to the switching node, the occurrence of the predictable event triggering monitoring of the data traffic by the switching node, the predictable event being a request issued by one node of the network to determine a route between the one node and a second node of the network. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A computer readable medium containing executable program instructions for acquiring information used by a switching node of a network to implement transmission priority (TP) routing of data traffic between end devices of the network, the executable program instructions comprising program instructions for:
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establishing a bounded time interval during which the switching node examines the data traffic over the network; triggering monitoring the data traffic during the bounded time interval for a defined data packet in response to a predetermined triggering event; and capturing a portion of the information from the defined data packet at the switching node during the bounded time interval; wherein the predetermined triggering event is a request issued by one node of the network to a second node of the network for the second node to compute a route through the network between the one node and a third node of the network. - View Dependent Claims (18, 19, 20)
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21. A switching node for efficiently acquiring information used to implement transmission priority (TP) routing of data traffic over a connection network between end nodes of the network, the switching node comprising:
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means for establishing a bounded time interval for examining the data traffic over the network; means for monitoring the data traffic during the bounded time interval for a defined data packet in response to a predetermined event; and means for capturing a portion of the information from the defined data packet during the bounded time interval, the captured portion of information used to implement TP routing wherein the predetermined event is a request issued by one node of the network to a second node of the network for the second node to compute a route through the network between the one node and a third node of the network.
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22. A method implemented by a switching node, the method being for efficiently acquiring information used to implement transmission priority (TP) routing of data traffic over a connection network between end nodes of the network, the method comprising:
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establishing a bounded time interval for examining the data traffic over the network; triggering monitoring the data traffic during the bounded time interval for a defined data packet in response to a predetermined triggering event; and capturing a portion of the information from the defined data packet during the bounded time interval, the captured portion of information used to implement TP routing; wherein the predetermined triggering event is a request issued by one node of the network to a second node of the network for the second node to compute a route through the network between the one node and a third node of the network.
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23. A computer readable medium containing executable program instructions for being executed by a switching node for causing the node to efficiently acquire information used to implement transmission priority (TP) routing of data traffic over a connection network between end nodes of the network, the program instructions comprising instructions for:
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establishing a bounded time interval for examining the data traffic over the network; triggering monitoring the data traffic during the bounded time interval for a defined data packet in response to a predetermined triggering event; and capturing a portion of the information from the defined data packet during the bounded time interval, the captured portion of information used to implement TP routing; wherein the predetermined triggering event is a request issued by one node of the network to a second node of the network for the second node to compute a route through the network between the one node and a third node of the network.
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Specification