Communication system, control apparatus, method for controlling same, and program

A communication system, comprising:

• a plurality of nodes each of which includes OAM (Operation Administration and Maintenance) functions;
• and
• a control apparatus that controls the plurality of nodes,
• wherein said each of the plurality of nodes transmits a status change notification including information about a port(s) affected by a failure(s) that has occurred in a network composed by the plurality of nodes to the control apparatus, and
• wherein the control apparatus determines whether to perform route control on the network on a basis of the status change notification and information about a composition of the network,
• wherein, when a number of paths affected by a failure(s) that has occurred in the network is 1, the path being formed by at least two of the plurality of nodes, the control apparatus determines not to perform the route control.

A control apparatus, comprising:

• a communication unit that receives, from at least one of a plurality of nodes each of which includes OAM (Operation Administration and Maintenance) functions, a status change notification including information about a port(s) affected by a failure(s) that has occurred in a network composed by the plurality of nodes;
• and
• a route control determination unit that determines whether to perform route control on the network on a basis of the status change notification and information about a composition of the network,
• wherein, when a number of paths affected by a failure(s) that has occurred in the network is 1, the path being formed by at least two of the plurality of nodes, the route control determination unit determines not to perform the route control.

A non-transitory computer-readable recording medium storing a program, causing a computer embedded on controlling a control apparatus to execute processing for:

• receiving, from at least one of a plurality of nodes each of which includes OAM (Operation Administration and Maintenance) functions, a status change notification including information about a port(s) affected by a failure(s) that has occurred in a network composed by the plurality of nodes;
• and
• determining whether to perform route control on the network on a basis of the status change notification and information about a composition of the network,
• wherein, in the processing for the determining whether to perform route control, when a number of paths affected by a failure(s) that has occurred in the network is 1, the path being formed by at least two of the plurality of nodes, it is determined that the route control is not performed.

A communication system, comprising:

• a plurality of nodes each of which includes OAM (Operation Administration and Maintenance) functions;
• and
• a control apparatus that controls the plurality of nodes,
• wherein said each of the plurality of nodes transmits a status change notification including information about a port(s) affected by a failure(s) that has occurred in a network composed by the plurality of nodes to the control apparatus, and
• wherein the control apparatus determines whether to perform route control on the network on a basis of the status change notification and information about a composition of the network,
• wherein, when a number of paths affected by a failure(s) that has occurred in the network is 1, the path being formed by at least two of the plurality of nodes, the control apparatus determines not to perform the route control, and the failure(s) occurred in the network is recovered by the OAM functions of the plurality of nodes, and
• wherein, when a number of paths affected by a failure(s) that has occurred in the network is 2 or more, the control apparatus determines whether to perform route control so as to recover the failure(s) occurred in the network or not.