Using floating transport card for best effort traffic
First Claim
1. A method comprising:
- monitoring an optical network that is configured for a required bandwidth,wherein the optical network includes multiple optical nodes and a plurality of light paths between the multiple optical nodes, each of the plurality of light paths being provisioned with particular wavelengths and the optical network being provisioned to use a full available wavelength spectrum for protected traffic without reservation for protection of the required bandwidth, andwherein each of the multiple optical nodes includes;
a reconfigurable optical add/drop multiplexer (ROADM) that is colorless, directionless, contentionless, and gridless, the ROADM including flexible spectrum selective switches and add/drop ports, andtransport cards with a majority of the transport cards provisioned as active cards to receive a traffic load of up to full capacity of the transport cards, and with a minority of the transport cards provisioned as floating spare cards for the active cards;
detecting, by a network management device and between a pair of the multiple optical nodes, one of dropped best-effort packets or a queue backlog for best-effort packets for a first light path of the plurality of light paths;
identifying, by the network management device and in response to the detecting, an unused first floating spare card and an unused second floating spare card in the pair of the multiple optical nodes;
automatically directing, by the network management device, tuning of the first floating spare card and the second floating spare card to a first wavelength, of the first light path, to service best-effort traffic between the pair of the multiple optical nodes;
sending, using one or more of the flexible spectrum selective switches, the best-effort traffic between the first floating spare card and the second floating spare card, of the pair of the multiple optical nodes, via the first wavelength;
automatically disabling, by the network management device and in response to a failure event in one of the plurality of light paths, the service of best-effort traffic between the pair of the multiple optical nodes; and
automatically directing, by the network management device and in response to the failure event, tuning of one or more of the first floating spare card and the second floating spare card to a second wavelength, for one of the plurality of light paths, to service protected traffic impacted by the failure event, wherein the second wavelength matches a wavelength of the failed light path.
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Accused Products
Abstract
A network management device monitors an optical network that is configured for a required bandwidth. The optical network includes multiple optical nodes and a plurality of light paths between the multiple optical nodes. The multiple optical nodes include transport cards with a majority of the transport cards provisioned as active cards to receive a traffic load of up to full capacity of the transport cards, and with a minority of the transport cards provisioned as floating spare cards for the active cards. The network management device identifies an unused first floating spare card and an unused second floating spare card in a pair of the multiple optical nodes and automatically provisions, by the network management device, the first floating spare card and the second floating spare card to service a light path for best-effort traffic between the pair of the multiple optical nodes.
11 Citations
20 Claims
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1. A method comprising:
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monitoring an optical network that is configured for a required bandwidth, wherein the optical network includes multiple optical nodes and a plurality of light paths between the multiple optical nodes, each of the plurality of light paths being provisioned with particular wavelengths and the optical network being provisioned to use a full available wavelength spectrum for protected traffic without reservation for protection of the required bandwidth, and wherein each of the multiple optical nodes includes; a reconfigurable optical add/drop multiplexer (ROADM) that is colorless, directionless, contentionless, and gridless, the ROADM including flexible spectrum selective switches and add/drop ports, and transport cards with a majority of the transport cards provisioned as active cards to receive a traffic load of up to full capacity of the transport cards, and with a minority of the transport cards provisioned as floating spare cards for the active cards; detecting, by a network management device and between a pair of the multiple optical nodes, one of dropped best-effort packets or a queue backlog for best-effort packets for a first light path of the plurality of light paths; identifying, by the network management device and in response to the detecting, an unused first floating spare card and an unused second floating spare card in the pair of the multiple optical nodes; automatically directing, by the network management device, tuning of the first floating spare card and the second floating spare card to a first wavelength, of the first light path, to service best-effort traffic between the pair of the multiple optical nodes; sending, using one or more of the flexible spectrum selective switches, the best-effort traffic between the first floating spare card and the second floating spare card, of the pair of the multiple optical nodes, via the first wavelength; automatically disabling, by the network management device and in response to a failure event in one of the plurality of light paths, the service of best-effort traffic between the pair of the multiple optical nodes; and automatically directing, by the network management device and in response to the failure event, tuning of one or more of the first floating spare card and the second floating spare card to a second wavelength, for one of the plurality of light paths, to service protected traffic impacted by the failure event, wherein the second wavelength matches a wavelength of the failed light path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A network management device, comprising:
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a memory to store a plurality of instructions; and one or more processors configured to; monitor a network that is configured for a required bandwidth, wherein the network includes multiple optical nodes with a plurality of light paths between the multiple optical nodes, wherein each of the multiple optical nodes includes a reconfigurable optical add/drop multiplexer (ROADM) that is colorless, directionless, contentionless, and gridless, the ROADM including flexible spectrum selective switches and add/drop ports, and transport cards with a majority of the transport cards provisioned as active cards to receive a traffic load of up to full capacity of the transport cards, and with a minority of the transport cards provisioned as floating spare cards for the active cards, and wherein each of the plurality of light paths being provisioned with particular wavelengths and the network being provisioned to use a full available wavelength spectrum for protected traffic without reservation for protection of a required bandwidth; detect, between a pair of the multiple optical nodes, one of dropped best-effort packets or a queue backlog for best-effort packets for a first light path of the plurality of light paths; identify, in response to the detecting, an unused first floating spare transport card and an unused second floating spare transport card in the pair of the multiple optical nodes; direct tuning of the first floating spare transport card and the second floating spare transport card to a first wavelength, of the first light path, to service best-effort traffic between the pair of the multiple optical nodes; direct sending, using one or more of the flexible spectrum selective switches, of the best-effort traffic between the first floating spare card and the second floating spare card, of the pair of the multiple optical nodes, via the first wavelength; disable, in response to a failure event in one of the plurality of light paths, the service of best-effort traffic between the pair of the multiple optical nodes; and direct, in response to the failure event, tuning of one or more of the first floating spare card and the second floating spare card to a second wavelength, for one of the plurality of light paths, to service protected traffic impacted by the failure event, wherein the second wavelength matches a wavelength of the failed light path. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A non-transitory computer-readable medium, storing instructions executable by one or more processors, the non-transitory computer-readable medium comprising instructions to:
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monitor an optical network configured for a required bandwidth, wherein the optical network includes multiple optical nodes and a plurality of light paths between the multiple optical nodes, wherein each of the multiple optical nodes includes a reconfigurable optical add/drop multiplexer (ROADM) that is colorless, directionless, contentionless, and gridless, the ROADM including flexible spectrum selective switches and add/drop ports, and transport cards with a majority of the transport cards provisioned as active cards to receive a traffic load of up to full capacity of the transport cards, and with a minority of the transport cards provisioned as floating spare cards for the active cards, and wherein each of the plurality of light paths is provisioned with particular wavelengths and the optical network is provisioned to use a full available wavelength spectrum for protected traffic without reservation for protection of the required bandwidth; detect, between a pair of the multiple optical nodes, one of dropped best-effort packets or a queue backlog for best-effort packets for a first light path of the plurality of light paths; identify an unused first floating spare card and an unused second floating spare card in the pair of the multiple optical nodes; automatically direct tuning of the first floating spare transport card and the second floating spare transport card to a first wavelength, of the first light path, to service a light path for best-effort traffic between the pair of the multiple optical nodes; send, using one or more of the flexible spectrum selective switches, the best-effort traffic between the first floating spare card and the second floating spare card, of the pair of the multiple optical nodes, via the first wavelength; automatically disable, in response to a failure event in one of the plurality of light paths, the service of best-effort traffic between the pair of the multiple optical nodes; and automatically direct, in response to the failure event, tuning of one or more of the first floating spare card and the second floating spare card to a second wavelength, for one of the plurality of light paths, to service protected traffic impacted by the failure event, wherein the second wavelength matches a wavelength of the failed light path. - View Dependent Claims (20)
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Specification