Software defined networking photonic routing systems and methods
A network includes a plurality of interconnected nodes utilizing an all-broadcast architecture for a plurality of wavelengths therebetween; a routing protocol configured to compute a loop-free path through the plurality of interconnected nodes, wherein the loop-free path is computed for at least one wavelength of the plurality of wavelengths using routing constructs adapted to a photonic domain; and at least one blocking element configured to selectively block the at least one wavelength based on the computed loop-free path. A routing method photonic node are also disclosed.
1. A network, comprising:
a plurality of interconnected nodes utilizing an all-broadcast architecture for a plurality of wavelengths there between;
wherein the plurality of interconnected nodes utilize a routing protocol configured to compute a loop-free path through the plurality of interconnected nodes, wherein the loop-free path utilizes at least one wavelength of the plurality of wavelengths using routing constructs adapted to a photonic domain; and
at least one blocking element configured to selectively block the at least one wavelength based on the computed loop-free path.
2. The network of claim 1 , further comprising:
a path computation element configured to determine locations of the at least one blocking element at the plurality of interconnected nodes based on the computed loop-free path and to communicate the determined locations to the network.
3. The network of claim 2 , further comprising:
a Software Defined Networking controller comprising the path computation element.
4. The network of claim 1 , wherein each of the nodes of the plurality of interconnected nodes utilizes a broadcast and select architecture.
5. The network of claim 4 , wherein the loop-free path is computed using a Shortest Path Bridging computation.
6. The network of claim 1 , wherein, responsive to a failed link between the plurality of interconnected nodes, the routing protocol is configured to compute an updated loop-free path through the plurality of interconnected nodes with the failed link excluded.
7. The network of claim 6 , wherein the at least one blocking element is reconfigured to selectively block and unblock the at least one wavelength based on the updated loop-free path.
8. The network of claim 1 , wherein the routing constructs comprise Layer 2 or Layer 3 constructs adapted for the photonic domain.
9. A processor-implemented routing method, comprising:
determining a topology of an optical network including a plurality of nodes, wherein the optical network utilizes an all-broadcast architecture for a plurality of wavelengths;
determining a loop-free path for at least one wavelength of the plurality of wavelengths through the optical network utilizing a routing protocol that uses routing constructs adapted to a photonic domain; and
directing at least one blocking element to selectively block the at least one wavelength based on the determined loop-free path.
10. The method of claim 9 , further comprising:
performing the determining steps and the directing step using an application; and
communicating locations of the at least one blocking element to the plurality of nodes.
11. The method of claim 9 , further comprising:
computing a spanning tree through the optical network for the loop-free path; and
assigning a cost to each of a plurality of links, with a bias in selection based on optical characteristics of each of the plurality of links.
12. The method of claim 11 , further comprising:
responsive to a failed link in the optical network, recomputing an updated loop-free path through the plurality of nodes on the plurality of links, with the failed link excluded from the recomputation; and
adjusting blocking behavior of the at least one blocking element based on the updated loop-free path.
13. The method of claim 9 , wherein the routing constructs comprise Layer 2 or Layer 3 constructs adapted for the photonic domain.
14. A node, comprising:
a plurality of degrees;
optical devices configured to broadcast a plurality of wavelengths through the plurality of degrees in an all-broadcast architecture;
at least one blocking element located at one of the plurality of degrees; and
a processor configured to selectively enable the at least one blocking element responsive to a loop-free path computed in a network in which node participates, wherein a routing protocol computes the loop-free path for at least one wavelength of the plurality of wavelengths using routing constructs adapted to a photonic domain.
15. The node of claim 14 , further comprising:
at least one optical transceiver communicatively coupled to the plurality of degrees, wherein the optical transceiver is operable for adding a wavelength of the plurality of wavelengths and dropping a wavelength of the plurality of wavelengths, wherein a receiver of the at least one optical transceiver is a coherent receiver configured to receive all wavelengths from a connected degree and selectively tune to a wavelength of interest.
16. The node of claim 14 , wherein the processor operates as a path computation element that performs a loop-free computation to determine the loop-free path.
17. The node of claim 14 , wherein the processor operates as a Software Defined Networking controller that performs a loop-free computation to determine the loop-free path.