Policing Networks
First Claim
1. A method of policing flow in a data network, said data network providing a network service having an associated reference rate adaptation policy, said method comprising steps of:
- determining a measure of greediness of a flow through a node;
comparing said measure of greediness with a measure indicative of acceptable greediness; and
designating the flow for possible sanction in the event that the greediness is not in accordance with the acceptable greediness;
characterised in that said measure indicative of acceptable greediness is determined in dependence on the expected greediness of a flow conforming to the reference rate adaptation policy associated with said network service and experiencing substantially similar path conditions.
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Abstract
Methods and apparatus for policing flow in a data network by determining a measure of greediness of a flow through a node, comparing said measure of greediness with a measure indicative of acceptable greediness dependent on the expected greediness of a compliant flow experiencing substantially similar path conditions, and designating the flow for possible sanction in the event that the greediness is not in accordance with said acceptable greediness. Such methods and apparatus allow for the policing of a data network wherein one or more fields in a data packet that carry information relating to a characterisation of an end-to-end path and/or a downstream path of said data packet are used in order to police said data network.
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Citations
29 Claims
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1. A method of policing flow in a data network, said data network providing a network service having an associated reference rate adaptation policy, said method comprising steps of:
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determining a measure of greediness of a flow through a node; comparing said measure of greediness with a measure indicative of acceptable greediness; and designating the flow for possible sanction in the event that the greediness is not in accordance with the acceptable greediness; characterised in that said measure indicative of acceptable greediness is determined in dependence on the expected greediness of a flow conforming to the reference rate adaptation policy associated with said network service and experiencing substantially similar path conditions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification