Frame counter correction apparatus, opposing apparatus, and frame counter correction method
First Claim
1. A frame counter correction apparatus coupled to an Ethernet network, comprising:
- a transmission counter to count a frame to be transmitted;
an inspection frame generator to generate an inspection frame for measuring a frame loss and acquire a first count value of the transmission counter at a time of generation of the inspection frame;
a transmission counter calculator to calculate a difference between the first count value of the transmission counter at the time of generation of the inspection frame and a second count value of the transmission counter at a time of transmission of the inspection frame; and
a transmission counter corrector to give the difference, which is a third count value of zero or more transmission frames other than the inspection frame, and information for specifying the inspection frame as a correction target to another inspection frame to be generated for transmitting to another frame counter correction apparatus.
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Accused Products
Abstract
A frame counter correction apparatus connected to an Ethernet network, including transmission counter for counting a number of frames to be transmitted; inspection frame generator for generating an inspection frame for measuring a frame loss; and transmission counter correction unit for calculating a difference between a counter value of the transmission counter at a time of generation of the inspection frame and the counter value of the transmission counter at a time of transmission of the inspection frame, and adding a calculated difference value and information for specifying the inspection frame as a correction target to another inspection frame.
11 Citations
7 Claims
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1. A frame counter correction apparatus coupled to an Ethernet network, comprising:
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a transmission counter to count a frame to be transmitted; an inspection frame generator to generate an inspection frame for measuring a frame loss and acquire a first count value of the transmission counter at a time of generation of the inspection frame; a transmission counter calculator to calculate a difference between the first count value of the transmission counter at the time of generation of the inspection frame and a second count value of the transmission counter at a time of transmission of the inspection frame; and a transmission counter corrector to give the difference, which is a third count value of zero or more transmission frames other than the inspection frame, and information for specifying the inspection frame as a correction target to another inspection frame to be generated for transmitting to another frame counter correction apparatus. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A frame counter correction method for an apparatus coupled to an Ethernet network, comprising:
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counting a transmission frame using a transmission counter; generating an inspection frame for measuring a frame loss, and acquiring a first count value from the transmission counter at a time of generation of the inspection frame; calculating a difference between the first count value of the transmission counter at the time of generation of the inspection frame and a second count value of the transmission counter at a time of transmission of the inspection frame; giving the difference and information for specifying the inspection frame as a correction target to another inspection frame; and transmitting the another inspection frame for correcting a third count value of the transmission counter a time of transmission of the specified inspection frame to another frame counter correction apparatus.
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Specification