Smartjack for fault-testing network segments on Ethernet and other internet protocol network architectures
First Claim
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1. A fault-testing node for a connectionless data link comprising:
- at least two opposing communication ports;
a soft switch for controlling port-to-port data flow through the device; and
an instance of software modifying header information associated with data units by copying the data from the first field to memory, copying the data from the second field and pasting the data into the first field, and then pasting the data from the memory into the second field;
wherein one or more port-to-port data flow paths are switched by activating the soft switch to loop incoming data units back to the sender of the data units through the device, and wherein the instance of software reverses the order of source and destination addresses of data units to insure acceptance of looped data units at the sender station.
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Abstract
A fault-testing node for a connectionless data link has at least two opposing communication ports; a soft switch for controlling port-to-port data flow through the device; and an instance of software for modifying packet header information. The node enables loop-back testing by one or more port-to-port data flow paths being switched through activation of the soft switch to loop incoming packets back to the sender of the packets through the device and wherein the instance of software reverses the order of source and destination addresses of data units to insure acceptance of looped data units at the sender station.
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Citations
20 Claims
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1. A fault-testing node for a connectionless data link comprising:
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at least two opposing communication ports; a soft switch for controlling port-to-port data flow through the device; and an instance of software modifying header information associated with data units by copying the data from the first field to memory, copying the data from the second field and pasting the data into the first field, and then pasting the data from the memory into the second field; wherein one or more port-to-port data flow paths are switched by activating the soft switch to loop incoming data units back to the sender of the data units through the device, and wherein the instance of software reverses the order of source and destination addresses of data units to insure acceptance of looped data units at the sender station. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. In a fault-testing node for a connectionless data link, the node having at least two opposing communication ports and an instance of software for modifying data unit header information, a method for switching data sets resident in address fields of a data unit enabling loop-back of data units received at the node to the sender of the data units comprising steps of:
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(a) copying the data set from a first field to a memory; (b) copying the data set from a second field; (c) pasting the data set from the second field into the first field; and (d) pasting the data set copied to memory in step (a) into the second field. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification