Communication network management system, method and program, and management computer
First Claim
1. A communication network management system, comprising:
- a communication network including a plurality of nodes and a plurality of links connecting between said plurality of nodes; and
a management computer connected to said plurality of nodes,wherein a loop-shape communication route in said communication network comprises a loop route,wherein said management computer transmits a frame to one node-on said loop route, wherein when receiving said frame, each node on said loop route forwards said received frame to a subsequent node along said loop route and,wherein said frame includes forwarding count information indicating a number, wherein said management computer transmits said frame in which said number is set to an initial value to said one node, wherein said each node increases or decreases said number when receiving said frame, wherein said predetermined condition is that said number reaches a threshold value, and wherein a node on said loop route where said number reaches said threshold value comprises a response node, and wherein said response node returns said response back to said management computer and forwards said received frame to said subsequent node after resetting said number to said initial value;
wherein a node of said plurality of nodes comprises a forwarding table which indicates a correspondence relationship between an import source and a forwarding destination of said frame, andif a predetermined condition is satisfied, returns a response back to said management computer, wherein said frame includes a destination address allocated to said loop route, wherein said management computer determines whether a failure is occurring, based on a reception state of said response, and wherein said management computer is provided apart from said plurality of nodes.
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Accused Products
Abstract
A communication network management system has: a communication network including a plurality of nodes and a plurality of links connecting between the plurality of nodes; and a management computer connected to the plurality of nodes. A loop-shape communication route in the communication network is a loop route. The management computer transmits a frame to one node on the loop route. When receiving the frame, each node on the loop route forwards the received frame to a subsequent node along the loop route and, if a predetermined condition is satisfied, returns a response back to the management computer. The management computer determines whether or not a failure is occurring, based on reception state of the response.
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Citations
18 Claims
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1. A communication network management system, comprising:
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a communication network including a plurality of nodes and a plurality of links connecting between said plurality of nodes; and
a management computer connected to said plurality of nodes,wherein a loop-shape communication route in said communication network comprises a loop route, wherein said management computer transmits a frame to one node-on said loop route, wherein when receiving said frame, each node on said loop route forwards said received frame to a subsequent node along said loop route and, wherein said frame includes forwarding count information indicating a number, wherein said management computer transmits said frame in which said number is set to an initial value to said one node, wherein said each node increases or decreases said number when receiving said frame, wherein said predetermined condition is that said number reaches a threshold value, and wherein a node on said loop route where said number reaches said threshold value comprises a response node, and wherein said response node returns said response back to said management computer and forwards said received frame to said subsequent node after resetting said number to said initial value; wherein a node of said plurality of nodes comprises a forwarding table which indicates a correspondence relationship between an import source and a forwarding destination of said frame, and if a predetermined condition is satisfied, returns a response back to said management computer, wherein said frame includes a destination address allocated to said loop route, wherein said management computer determines whether a failure is occurring, based on a reception state of said response, and wherein said management computer is provided apart from said plurality of nodes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 17, 18)
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11. A management computer that manages a communication network including a plurality of nodes and a plurality of links connecting between said plurality of nodes, said management computer comprising:
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a storage unit in which-loop route information indicating a loop route comprising a loop-shape communication route in said communication network is stored; an entry control unit which instructs each node on said loop route; and a monitoring unit which transmits a frame to one node on said loop route, wherein said-entry control unit instructs said each node to, when receiving said frame, forward said received frame to a subsequent node along said loop route and, wherein said frame includes forwarding count information indicating a number, wherein said management computer transmits said frame in which said number is set to an initial value to said one node, wherein said each node increases or decreases said number when receiving said frame, wherein said predetermined condition is that said number reaches a threshold value, and wherein a node on said loop route where said number reaches said threshold value comprises a response node, and wherein said response node returns said response back to said management computer and forwards said received frame to said subsequent node after resetting said number to said initial value; wherein a node of said plurality of nodes comprises a forwarding table which indicates a correspondence relationship between an import source and a forwarding destination of said frame, and if a predetermined condition is satisfied, return a response back to said management computer, wherein said frame includes a destination address allocated to said loop route, wherein said monitoring unit determines whether a failure is occurring, based on a reception state of said response, and wherein said monitoring unit is provided apart from said entry control unit. - View Dependent Claims (12, 15, 16)
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13. A communication network management method that manages a communication network by using a management computer,
wherein said communication network includes a plurality of nodes and a plurality of links connecting between said plurality of nodes, wherein a loop-shape communication route in said communication network is a loop route, wherein said communication network management method comprises: - transmitting a frame from said management computer to one node on said loop route;
forwarding, by each node on said loop route, said frame to a subsequent node along said loop route-and, if a predetermined condition is satisfied, returning a response back to said management computer; and wherein said frame includes forwarding count information indicating a number, wherein said management computer transmits said frame in which said number is set to an initial value to said one node, wherein said each node increases or decreases said number when receiving said frame, wherein said predetermined condition is that said number reaches a threshold value, and wherein a node on said loop route where said number reaches said threshold value comprises a response node, and wherein said response node returns said response back to said management computer and forwards said received frame to said subsequent node after resetting said number to said initial value; wherein a node of said plurality of nodes comprises a forwarding table which indicates a correspondence relationship between an import source and a forwarding destination of said frame, and determining whether a failure is occurring, based on a reception state of said response in said management computer, wherein said frame includes a destination address allocated to said loop route, and wherein said management computer is provided apart from said plurality of nodes.
- transmitting a frame from said management computer to one node on said loop route;
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14. A management program recorded on a tangible non-transitory computer-readable medium that, when executed, causes a management computer to perform a management processing of a communication network,
wherein said communication network includes a plurality of nodes and a plurality of links connecting between said plurality of nodes, wherein said management processing comprises: - storing loop route information indicating a loop route comprising a loop-shape communication route in said communication network, in a storage device;
instructing each node on said loop-route to, when receiving a frame, forward said received frame to a subsequent node along said loop route and, if a predetermined condition is satisfied, return a response back to said management computer;
transmitting a frame to one node on said loop route; andwherein said frame includes forwarding count information indicating a number, wherein said management computer transmits said frame in which said number is set to an initial value to said one node, wherein said each node increases or decreases said number when receiving said frame, wherein said predetermined condition is that said number reaches a threshold value, and wherein a node on said loop route where said number reaches said threshold value comprises a response node, and wherein said response node returns said response back to said management computer and forwards said received frame to said subsequent node after resetting said number to said initial value; wherein a node of said plurality of nodes comprises a forwarding table which indicates a correspondence relationship between an import source and a forwarding destination of said frame, and determining whether a failure is occurring, based on a reception state of said response, wherein said frame includes a destination address allocated to said loop route, and wherein said management computer is provided apart from said plurality of nodes.
- storing loop route information indicating a loop route comprising a loop-shape communication route in said communication network, in a storage device;
Specification