Communication apparatus, apparatus activation control method, communication control method, and communication control program

A communication apparatus connected to a network having a hierarchical structure in which a higher layer path is subordinate to a lower layer path when rebuilding path information of the paths for transmitting user traffic, and connected to a control network which receives/transmits a control message, the communication apparatus comprising:

• an I/F information storing device for storing I/F information that shows physical information of the paths, a switch information storing device for storing switch information that shows a state of switches connected to communication channels that configure the paths, and a path order defining information storing device for storing defining information for setting a priority order among paths to be recovered, when an apparatus control part recovers from trouble;
• a link information generating device to generate link information of before restart for specifying adjacent communication apparatuses based on the I/F information stored in the I/F information storing device and the switch information stored in the switch information storing device, and a held path information acquiring device for acquiring held path information held by the adjacent communication apparatuses written in the link information that is generated by the link information generating device via the control network;
• and
• an order determining device which determines the order of priority of the paths in such a manner that the lower layer path comes first and the higher layer path comes thereafter when generating the path information based on a priority order among paths to be recovered that is stored in the path order defining information storing device, when the held path information acquiring device acquires the held path information held by the adjacent communication apparatuses, and a path information generating device which generates the path information based on the order of priority of the paths determined by the order determining device and the held path information acquired by the held path information acquiring device.

A communication apparatus connected to a network having a hierarchical structure in which a higher layer path is subordinate to a lower layer path when rebuilding path information of the paths for transmitting user traffic, and connected to a control network which receives/transmits a control message, the communication apparatus comprising:

• an I/F information storing device for storing I/F information that shows physical information of the paths;
• a switch information storing device for storing switch information that shows a state of switches connected to communication channels that configure the paths, and a logical I/F information storing device for storing logical I/F information that shows logical information of the paths;
• a link information generating device to generate link information of before restart for specifying adjacent communication apparatuses based on the I/F information stored in the I/F information storing device, the logical I/F information stored in the logical I/F information storing device, and the switch information stored in the switch information storing device, a held path information acquiring device for acquiring the held path information held by the adjacent communication apparatuses written in the link information that is generated by the link information generating device via the control network;
• and
• a path information generating device for generating the path information when the held path information acquiring device acquires the held path information, regardless of whether or not the lower layer path information is formed in advance.

A communication control method which, when rebuilding path information of a path that transmits user traffic, controls to transmit the user traffic to a network that has a hierarchical structure in which a higher layer path is subordinate to a lower layer path, and allows each communication apparatus to control transmission/reception of a control message between the communication apparatuses via a control network, said communication control method comprising:

• generating link information of before restart for specifying adjacent communication apparatuses based on I/F information for showing physical information of the paths and switch information indicating a state of switches connected to communication channels that configure the paths;
• acquiring held path information from the adjacent communication apparatuses written in the generated link information via the control network;
• determining a priority order of the paths in such a manner that the lower layer path comes first and the higher layer path comes thereafter based on order defining information for defining a priority order for recovering the path information when the path information of a plurality of paths is lost;
• and
• rebuilding the path information based on the determined priority order and the held path information.

A communication control method which, when rebuilding path information of a path that transmits user traffic, controls to transmit the user traffic to a network that has a hierarchical structure in which a higher layer path is subordinate to a lower layer path and controls to transmit/receive a control message between each of communication apparatuses via a control network, said communication control method comprising:

• generating link information of before the restart for specifying adjacent communication apparatuses based on I/F information for showing physical information of the paths, logical I/F information indicating logical information of the paths, and switch information indicating a state of switches connected to communication channels that configure the paths;
• acquiring held path information from the adjacent communication apparatuses written in the generated link information via the control network;
• and
• rebuilding generates the path information, regardless of whether or not a lower layer path information is formed in advance.

A non-transitory computer readable medium having stored thereon a communication control program which, when rebuilding path information of a path for transmitting user traffic, controls transmission of the user traffic to a network that has a hierarchical structure in which a higher layer path is subordinate to a lower layer path, and allows each communication apparatus to control transmission/reception of a control message between the communication apparatuses via a control network, the non-transitory computer readable medium enabling a computer to execute:

• a procedure for generating link information of before the restart for specifying all adjacent communication apparatuses based on I/F information for showing physical information of the paths, and switch information showing a state of switches connected to communication channels that configure the paths;
• a procedure for acquiring, via the control network, held path information from the adjacent communication apparatuses that are written in the generated link information;
• a procedure for determining a priority order of the paths in such a manner that a lower layer path comes first and a higher layer path comes thereafter when generating the path information based on order defining information for defining a priority order of the paths with which path information is to be recovered when the path information of a plurality of paths is lost;
• and
• a procedure for rebuilding the path information based on the determined priority order and the held path information acquired earlier.

A non-transitory computer readable medium having stored thereon communication control program which, when rebuilding path information of a path for transmitting user traffic, controls transmission of the user traffic to a network that has a hierarchical structure in which a higher layer path is subordinate to a lower layer path, and allows each communication apparatus to control transmission/reception of a control message between the communication apparatuses via a control network, the non-transitory computer readable medium enabling a computer to execute:

• a procedure for generating link information of before the restart for specifying adjacent communication apparatuses based on I/F information for showing physical information of the paths, logical I/F information for showing logical information of the paths, and the switch information stored in advance for showing a state of switches connected to communication channels that configure the paths;
• a procedure for acquiring, via the control network, held path information from the adjacent communication apparatuses that are written in the generated link information;
• and
• a procedure for generating the path information, regardless of whether or not a lower layer path information is formed in advance.

A communication apparatus connected to a network having a hierarchical structure in which a higher layer path is subordinate to a lower layer path when rebuilding path information of the paths for transmitting user traffic, and connected to a control network which receives/transmits a control message, the communication apparatus comprising:

• an I/F information storing means for storing I/F information that shows physical information of the paths, a switch information storing means for storing switch information that shows a state of switches connected to communication channels that configure the paths, and a path order defining information storing means for storing defining information for setting a priority order among paths to be recovered, when an apparatus control means recovers from trouble;
• a link information generating means to generate link information of before restart for specifying adjacent communication apparatuses based on the I/F information stored in the I/F information storing means and the switch information stored in the switch information storing means, and a held path information acquiring means for acquiring held path information held by the adjacent communication apparatuses written in the link information that is generated by the link information generating means via the control network;
• and
• an order determining means which determines the order of priority of the paths in such a manner that the lower layer path comes first and the higher layer path comes thereafter when generating the path information based on a priority order among paths to be recovered that is stored in the path order defining information storing means, when the held path information acquiring means acquires the held path information held by the adjacent communication apparatuses, and a path information generating means which generates the path information based on the order of priority of the paths determined by the order determining means and the held path information acquired by the held path information acquiring means.

A communication apparatus connected to a network having a hierarchical structure in which a higher layer path is subordinate to a lower layer path when rebuilding path information of the paths for transmitting user traffic, and connected to a control network which receives/transmits a control message, the communication apparatus comprising:

• an I/F information storing means for storing I/F information that shows physical information of the paths;
• a switch information storing means for storing switch information that shows a state of switches connected to communication channels that configure the paths, and a logical I/F information storing means for storing logical I/F information that shows logical information of the paths;
• a link information generating means to generate link information of before restart for specifying adjacent communication apparatuses based on the I/F information stored in the I/F information storing means, the logical I/F information stored in the logical I/F information storing means, and the switch information stored in the switch information storing means, a held path information acquiring means for acquiring the held path information held by the adjacent communication apparatuses written in the link information that is generated by the link information generating means via the control network;
• and
• a path information generating means for generating the path information when the held path information acquiring means acquires the held path information, regardless of whether or not the lower layer path information is formed in advance.