METHOD, APPARATUS, AND PACKET ANALYZING SYSTEM
First Claim
1. A method comprising:
- receiving a first packet, the first packet being transmitted from a first packet capture point in a network, the first packet including a first packet identifier and a first error detection code (EDC);
storing first information indicating the first packet identifier and second information indicating the first EDC;
receiving a second packet, the second packet being transmitted from a second capturing point in the network, the second packet including a second packet identifier and a second EDC;
comparing the second packet identifier and the second EDC with the first information and the second information, respectively; and
in response to a determination according to the comparing that the second packet identifier corresponds to the first information and the second EDC corresponds to the second information, discarding the second packet, and in response to a determination according to the comparing that at least any one the second packet identifier or the second EDC does not correspond to either of the first information or the second information, providing the first and second packets for a packet analysis.
1 Assignment
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Accused Products
Abstract
A method includes receiving a first packet, the first packet being including a first packet identifier and a first error detection code, storing first information indicating the first packet identifier and second information indicating the first error detection code, receiving a second packet, the second packet being including a second packet identifier and a second error detection code, comparing the second packet identifier and the second error detection code with the first information and the second information, respectively, in response to a determination that the second packet identifier corresponds to the first information and the second error detection code corresponds to the second information, discarding the second packet, in response to a determination that at least one the second packet identifier and the second error detection code does not correspond to the first information and the second information, providing the first packet and the second packet for a packet analysis.
46 Citations
12 Claims
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1. A method comprising:
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receiving a first packet, the first packet being transmitted from a first packet capture point in a network, the first packet including a first packet identifier and a first error detection code (EDC); storing first information indicating the first packet identifier and second information indicating the first EDC; receiving a second packet, the second packet being transmitted from a second capturing point in the network, the second packet including a second packet identifier and a second EDC; comparing the second packet identifier and the second EDC with the first information and the second information, respectively; and in response to a determination according to the comparing that the second packet identifier corresponds to the first information and the second EDC corresponds to the second information, discarding the second packet, and in response to a determination according to the comparing that at least any one the second packet identifier or the second EDC does not correspond to either of the first information or the second information, providing the first and second packets for a packet analysis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus comprising:
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a memory; and a processor coupled to the memory and configured to receive a first packet, the first packet being transmitted from a first packet capture point in a network and the first packet being including a first packet identifier and a first error detection code, store first information indicating the first packet identifier and second information indicating the first error detection code, receive a second packet, the second packet being transmitted from a second capturing point in the network and the second packet being including a second packet identifier and a second error detection code, compare the second packet identifier and the second error detection code with the first information and the second information, respectively, and in response to a determination that the second packet identifier corresponds to the first information and the second error detection code corresponds to the second information, discard the second packet, and in response to a determination that at least one the second packet identifier and the second error detection code does not correspond to the first information and the second information, provide the first packet and the second packet for a packet analysis.
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12. A packet analyzing system which analyzes a plurality of packets, the system comprising:
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a packet analyzing device; a duplicate packet detection device; a first switching device; and a second switch device, wherein the first switching device is configured to perform a first relay processing of a first packet, and transmit a first copied packet including a first packet identifier and a first error detection code obtained by copying the first packet to the duplicate packet detection apparatus, the second switching device is configured to perform a second relay processing of the first packet, and transmit a second copied packet including a second packet identifier and a second error detection code obtained by copying the first packet to the duplicate packet detection apparatus, the duplicate packet detection device is configured to receive the first copied packet, store first information indicating the first packet identifier and second information indicating the first error detection code, receive the second copied packet, compare the second packet identifier and the second error detection code with the first information and the second information, respectively, in response to a determination that the second packet identifier corresponds to the first information and the second error detection code corresponds to the second information, discard the second copied packet, and in response to a determination that at least one the second packet identifier and the second error detection code does not correspond to the first information and the second information, transmit the first copied packet to the packet analyzing device, and the packet analyzing device is configured to perform a packet analyzing using the first copied packet.
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Specification