Route tracing in software defined networks
First Claim
1. A method, in a data processing system comprising a processor and a memory and implementing a software defined network (SDN) controller, for tracing a route taken by a packet in a SDN, the method comprising:
- assigning, by the SDN controller, each switch in the SDN a first color label, from a set of color labels, such that adjacent switches have different color labels;
installing, by the SDN controller, one or more rules in each switch to forward a received data packet to the SDN controller in response to a second color label of the received data packet not matching the first color label assigned to the switch;
assigning, by the SDN controller, a second color label, from the set of color labels, to a trace data packet; and
tracing, by the SDN controller, a route of the trace data packet through the SDN based on the second color label and application of the one or more rules to the trace data packet at each of the switches in the SDN as the trace data packet is received by each of the switches in the SDN.
1 Assignment
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Accused Products
Abstract
Mechanisms are provided for tracing a route taken by a packet in a Software Defined Network (SDN). Each switch in the SDN is assigned a first color label, from a set of color labels, such that such that adjacent switches have different color labels. Rules are installed in each switch to forward a received data packet to the SDN controller in response to a second color label of the received data packet not matching the first color label assigned to the switch. A second color label, from the set of color labels, is assigned to a trace data packet. A route of the trace data packet is traced through the SDN based on the second color label and application of the one or more rules to the trace data packet at each of the switches in the SDN as the trace data packet is received by each of the switches in the SDN.
9 Citations
20 Claims
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1. A method, in a data processing system comprising a processor and a memory and implementing a software defined network (SDN) controller, for tracing a route taken by a packet in a SDN, the method comprising:
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assigning, by the SDN controller, each switch in the SDN a first color label, from a set of color labels, such that adjacent switches have different color labels; installing, by the SDN controller, one or more rules in each switch to forward a received data packet to the SDN controller in response to a second color label of the received data packet not matching the first color label assigned to the switch; assigning, by the SDN controller, a second color label, from the set of color labels, to a trace data packet; and tracing, by the SDN controller, a route of the trace data packet through the SDN based on the second color label and application of the one or more rules to the trace data packet at each of the switches in the SDN as the trace data packet is received by each of the switches in the SDN. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A computer program product comprising a computer readable storage medium having a computer readable program stored therein, wherein the computer readable program, when executed on a computing device implementing a software defined network (SDN) controller, causes the computing device to:
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assign, by the SDN controller, each switch in the SDN a first color label, from a set of color labels, such that adjacent switches have different color labels; install, by the SDN controller, one or more rules in each switch to forward a received data packet to the SDN controller in response to a second color label of the received data packet not matching the first color label assigned to the switch; assign, by the SDN controller, a second color label, from the set of color labels, to a trace data packet; and trace, by the SDN controller, a route of the trace data packet through the SDN based on the second color label and application of the one or more rules to the trace data packet at each of the switches in the SDN as the trace data packet is received by each of the switches in the SDN. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. An apparatus comprising:
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a processor; and a memory coupled to the processor, wherein the memory comprises instructions which, when executed by the processor, cause the processor to implement a software defined network (SDN) controller, and wherein the SDN controller implemented by the processor is configured to; assign each switch in the SDN a first color label, from a set of color labels, such that adjacent switches have different color labels; install one or more rules in each switch to forward a received data packet to the SDN controller in response to a second color label of the received data packet not matching the first color label assigned to the switch; assign a second color label, from the set of color labels, to a trace data packet; and trace a route of the trace data packet through the SDN based on the second color label and application of the one or more rules to the trace data packet at each of the switches in the SDN as the trace data packet is received by each of the switches in the SDN.
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Specification