Investigating quality of service disruptions in multicast forwarding trees
First Claim
Patent Images
1. A method of investigating a Quality of Service (“
- QoS”
) disruption among nodes of a computer network forming a multicast forwarding tree, comprising;
identifying a topology of the multicast forwarding tree;
collecting performance data at interfaces of nodes which are part of the multicast forwarding tree;
mapping the performance data to the topology; and
identifying a first node of the topology as a source of the QoS disruption where the first node has a determined egress data packet flow rate that is less than a determined ingress data packet flow rate of the first node based upon performance data collected during a multicast flow to determine the ingress and egress data packet flow rates of the first node.
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Abstract
Methods, computer-readable storage media and systems may be provided for investigating a Quality of Service (“QoS”) disruption among nodes of a computer network that form a multicast forwarding tree. A topology of the multicast forwarding tree may be identified. Performance data may be collected at interfaces between nodes of the multicast forwarding tree. A source of the QoS disruption may be identified by mapping the performance data to the topology.
26 Citations
18 Claims
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1. A method of investigating a Quality of Service (“
- QoS”
) disruption among nodes of a computer network forming a multicast forwarding tree, comprising;identifying a topology of the multicast forwarding tree; collecting performance data at interfaces of nodes which are part of the multicast forwarding tree; mapping the performance data to the topology; and identifying a first node of the topology as a source of the QoS disruption where the first node has a determined egress data packet flow rate that is less than a determined ingress data packet flow rate of the first node based upon performance data collected during a multicast flow to determine the ingress and egress data packet flow rates of the first node. - View Dependent Claims (2, 3, 4, 5, 6)
- QoS”
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7. A non-transitory computer-readable storage medium having computer-executable instructions to investigate a Quality of Service (“
- QoS”
) disruption among nodes of a multicast forwarding tree, the instructions causing a computer to;discover multicast forwarding and routing information directing a multicast flow; compute a topology of nodes which are receiving the multicast flow; collect performance data at interfaces between nodes of the computed topology; map the performance data to the topology; and identify a first node of the topology as a source of the QoS disruption where the first node has a determined egress data packet flow rate that is less than a determined ingress data packet flow rate of the first node based upon performance data collected during a multicast flow to determine the ingress and egress data packet flow rates of the first node. - View Dependent Claims (8, 9, 10, 11, 12)
- QoS”
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13. A system to investigate a Quality of Service (“
- QoS”
) disruption among nodes of a multicast forwarding tree, the system comprising;a discovery component to obtain multicast forwarding and routing information directing a multicast flow; a polling component to collect performance data at interfaces of nodes which are receiving the multicast flow; and a forwarding tree computation component to compute forwarding tree topology of the nodes which are receiving the multicast flow, map the performance data on the tree topology, and identify a first node of the topology as a source of the QoS disruption where the first node has a determined egress data packet flow rate that is less than a determined ingress data packet flow rate of the first node based upon performance data collected during a multicast flow to determine the ingress and egress data packet flow rates of the first node. - View Dependent Claims (14, 15, 16, 17, 18)
- QoS”
Specification