Method and apparatus for adapting enforcement of network quality of service policies based on feedback about network conditions
First Claim
1. A method for adaptively enforcing Quality of Service (QoS) policies for one or more flows of packets in a packet-switched network based on network feedback information, comprising the computer-implemented steps of:
- assigning packets of a first group of flows to a first service level;
receiving then-current interface congestion information for network traffic that is mapped to said first service level and that is passing through an interface of a network device in the network;
selecting one or more flows from the first group of flows based on the then-current interface congestion information;
reassigning packets from said one or more flows to a second service level; and
wherein the step of receiving then-current interface congestion information includes the steps of;
directing one or more network devices to collect dropped packet information for at least one of said first group of flows associated with said first service level; and
retrieving said dropped packet information from said one or more network devices for said at least one of said first group of flows associated with said first service level.
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Abstract
A method and apparatus for adaptively enforcing Quality of Service (QoS) policies for one or more flows of packets in a packet-switched network based on network feedback information. In one aspect, packets of a first group of flows are assigned to a first service level. Then-current interface congestion information for network traffic that is mapped to the first service level and that is passing through an interface of a network device in the network is received. Based on the then-current interface congestion information one or more flows from the first group of flows are selected. Packets from the one or more flows are then assigned to a second service level.
248 Citations
17 Claims
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1. A method for adaptively enforcing Quality of Service (QoS) policies for one or more flows of packets in a packet-switched network based on network feedback information, comprising the computer-implemented steps of:
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assigning packets of a first group of flows to a first service level;
receiving then-current interface congestion information for network traffic that is mapped to said first service level and that is passing through an interface of a network device in the network;
selecting one or more flows from the first group of flows based on the then-current interface congestion information;
reassigning packets from said one or more flows to a second service level; and
wherein the step of receiving then-current interface congestion information includes the steps of;
directing one or more network devices to collect dropped packet information for at least one of said first group of flows associated with said first service level; and
retrieving said dropped packet information from said one or more network devices for said at least one of said first group of flows associated with said first service level. - View Dependent Claims (2, 3, 4, 5)
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6. A computer-readable medium carrying one or more sequences of instructions for adaptively enforcing Quality of Service (QoS) policies for one or more flows of packets in a packet-switched network based on network feedback information, wherein execution of the one or more sequences of instructions by one or more processors causes the one or more processors to perform the steps of:
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assigning packets of a first group of flows to a first service level;
receiving then-current interface congestion information for network traffic that is mapped to said first service level and that is passing through an interface of a network device in the network;
selecting one or more flows from the first group of flows based on the then-current interface congestion information;
reassigning packets from said one or more flows to a second service level; and
wherein the step of receiving then-current interface congestion information includes the steps of;
directing one or more network devices to collect dropped packet information for at least one of said first group of flows associated with said first service level; and
retrieving the dropped packet information from said one or more network devices for said at least one of said first group of flows associated with said first service level. - View Dependent Claims (7, 8, 9, 10)
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11. A computer apparatus comprising:
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a processor; and
a memory coupled to the processor, the memory containing one or more sequences of instructions for adaptively enforcing Quality of Service (QoS) policies for one or more flows of packets in a packet-switched network based on network feedback information, wherein execution of the one or more sequences of instructions by the processor causes the processor to perform the steps of;
assigning packets of a first group of flows to a first service level;
receiving then-current interface congestion information for network traffic that is mapped to said first service level and that is passing through an interface of a network device in the network;
selecting one or more flows from the first group of flows based on the then-current interface congestion information;
reassigning packets from said one or more flows to a second service level; and
wherein the step of receiving then-current interface congestion information includes the steps of;
directing one or more network devices to collect dropped packet information for at least one of said first group of flows associated with said first service level; and
retrieving said dropped packet information from said one or more network devices for said at least one of said first group of flows associated with said first service level. - View Dependent Claims (12, 13, 14, 15)
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16. A computer apparatus comprising:
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means for assigning packets of a first group of flows to a first service level;
means for receiving then-current interface congestion information for network traffic that is mapped to said first service level and that is passing through an interface of a network device in the network;
means for selecting one or more flows from the first group of flows based on the then-current interface congestion information;
means for reassigning packets from said one or more flows to a second service level; and
wherein the receiving then-current interface congestion information means includes;
means for directing one or more network devices to collect dropped packet information for at least one of said first group of flows associated with said first service level; and
means for retrieving said dropped packet information from said one or more network devices for said at least one of said first group of flows associated with said first service level.
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17. A method for adaptively enforcing Quality of Service (QoS) policies for one or more flows of packets in a packet-switched network based on network feedback information, comprising the computer-implemented steps of:
- assigning data flows associated with a first service level to a first network device resource;
assigning data flows associated with a second service level to said first network device resource;
receiving then-current interface congestion information for network traffic that is mapped to said first network device resource;
reassigning data flows associated with said second service level to a second network device resource based on said then-current interface congestion information; and
wherein the step of receiving then-current interface congestion information includes the steps of;
directing one or more network devices to collect dropped packet information for at least one of said first group of flows associated with said first service level; and
retrieving said dropped packet information from said one or more network devices for said at least one of said first group of flows associated with said first service level.
- assigning data flows associated with a first service level to a first network device resource;
Specification