Network, node device, network redundancy method and recording medium
OwnerHirokazu Ozakiinventor
Life of this patent
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Abstract
There is provided a network capable of coping with occurrence of failure including a plurality of autonomous networks. The network includes an existing network A including a plurality of autonomous networks AS1 to AS6 in which the same routing protocol is employed and an additional network B added to the existing network to provide redundancy to the network. The additional network B is an autonomous network ASP dedicated to backup routes and is less in size than the existing network A. Traffic on the existing network A is transmitted by use of the additional network B.
Claims14
A network comprising:
- an existing network comprising a plurality of autonomous networks in which one and the same routing protocol is employed;
- and
- an additional network added to the existing network to provide redundancy, the additional network being an autonomous network dedicated to backup routes and being less in size than the existing network,
- wherein traffic on the existing network is transmitted by use of the additional network.
A node device included in an autonomous network in which one and the same routing protocol is employed, wherein:
- the node device is an edge node device connecting to another autonomous network;
- the plurality of autonomous networks included in an existing network to which an additional network is added to provide redundancy, the additional network being an autonomous network dedicated to backup routes and being less in size than the existing network;
- and
- the edge node device switches from the existing network to the additional network to transmit traffic on the existing network by use of the additional network.
A network redundancy method for use with an existing network including a plurality of autonomous networks in which one and the same routing protocol is employed, comprising the steps of:
- forming the existing network redundantly by adding an additional network which is an autonomous network dedicated to backup routes to the existing network, the additional network being less in size than the existing network;
- and
- transmitting traffic on the existing network by use of the additional network.
A network redundancy method for use with a node device included in an autonomous network in which one and the same routing protocol is employed, wherein:
- the node device is an edge node device connecting to another autonomous network;
- the plurality of autonomous networks included in an existing network to which an additional network is added to provide redundancy, the additional network being an autonomous network dedicated to backup routes and being less in size than the existing network;
- and
- the edge node device performs steps of:
- switching from the existing network to the additional network;
- and transmitting traffic on the existing network by use of the additional network.
A recording medium storing a network redundancy program to be executed on a node device included in an autonomous network in which one and the same routing protocol is employed, wherein:
- the node device is an edge node device connecting to another autonomous network;
- the plurality of autonomous networks included in an existing network to which an additional network is added to provide redundancy, the additional network being an autonomous network dedicated to backup routes and being less in size than the existing network;
- and
- the program makes the edge node device execute processing of:
- switching from the existing network to the additional network;
- and transmitting traffic on the existing network by use of the additional network.
Dependencies are inferred from the claim text.