Open shortest path first extensions in support of wavelength switched optical networks

1. A network component comprising:

a generalized multiprotocol label switching (GMPLS) control plane controller configured to:

transmit a message to at least one adjacent control plane controller,

wherein the message comprises a Type-Length-Value (TLV) indicating Routing and Wavelength Assignment (RWA) information,

wherein the TLV comprises a Node Attribute TLV, a Link Set TLV, or both, and

wherein the TLV further comprises at least one sub-TLV indicating additional RWA information.

2. The network component of claim 1 , wherein the TLV comprises the Node Attribute TLV and the at least one sub-TLV comprises a connectivity matrix sub-TLV.

3. The network component of claim 2 , wherein the connectivity matrix sub-TLV comprises a Link Set object that indicates a list or range of link elements, a directionality for the link elements, and IP addresses associated with the link elements.

4. The network component of claim 1 , wherein the TLV comprises the Node Attribute TLV and the at least one sub-TLV comprises wavelength converter pool information.

5. The network component of claim 4 , wherein the at least one sub-TLV is selected from the group consisting essentially of a converter accessibility sub-TLV, a wavelength converter range sub-TLV, and a wavelength converter (WC) usage state sub-TLV.

6. The network component of claim 1 , wherein the TLV comprises the Link Set TLV and the at least one sub-TLV comprises a port wavelength restrictions sub-TLV.

7. The network component of claim 1 , wherein the TLV comprises the Link Set TLV and the at least one sub-TLV comprises an available wavelengths sub-TLV.

8. The network component of claim 1 , wherein the TLV comprises the Link Set TLV and the at least one sub-TLV comprises a shared backup wavelengths sub-TLV.

9. The network component of claim 1 , wherein the GMPLS control plane controller is further configured to implement a routing flooding protocol to limit a frequency of RWA information updates based on the at least one sub-TLV.

10. The network component of claim 1 , wherein the message comprises the Node Attribute TLV with a connectivity matrix sub-TLV and at least one wavelength converter pool sub-TLV, and wherein the message further comprises a Link Set TLV with a port wavelength restrictions sub-TLV, an available wavelengths sub-TLV, and a shared backup wavelengths sub-TLV.

11. The network component of claim 1 , wherein the message comprises the Node Attribute TLV with at least one sub-TLV selected from the group consisting of a connectivity matrix sub-TLV, a converter accessibility sub-TLV, a wavelength converter range sub-TLV, and a wavelength converter (WC) usage state sub-TLV, and wherein the message further comprises the Link Set TLV with at least one sub-TLV selected from the group consisting essentially of a port wavelength restrictions sub-TLV, an available wavelengths sub-TLV, and a shared backup wavelengths sub-TLV.

12. A method comprising:

communicating an open shortest path first (OSPF) link state advertisement (LSA) message comprising a Type-Length-Value (TLV) with at least one sub-TLV to a generalized multiprotocol label switching (GMPLS) control plane controller,

wherein the TLV comprises a Node Attribute TLV, a Link Set TLV, or both, and

wherein the TLV further comprises at least one sub-TLV indicating Routing and Wavelength Assignment (RWA) information.

13. The method of claim 12 , wherein the TLV comprises the Node Attribute TLV and the at least one sub-TLV comprises a connectivity matrix sub-TLV.

14. The method of claim 12 , wherein the TLV comprises the Node Attribute TLV and wherein the at least one sub-TLV comprises wavelength converter pool information.

15. The method of claim 12 , wherein the TLV comprises the Link Set TLV and the at least one sub-TLV is selected from the group consisting essentially of a port wavelength restrictions sub-TLV, an available wavelengths sub-TLV, and a shared backup wavelengths sub-TLV.

16. The method of claim 12 further comprising implementing a routing flooding protocol to limit a frequency of RWA information updates from the at least one sub-TLV.

17. An apparatus comprising:

a generalized multiprotocol label switching (GMPLS) control plane controller configured to communicate a link state advertisement (LSA) comprising a Type-Length-Value (TLV) to at least one adjacent control plane controller,

wherein the TLV comprises a Node Attribute TLV, a Link Set TLV, or both, and

wherein the TLV further comprises at least one sub-TLV with Routing and Wavelength Assignment (RWA) information.

18. The apparatus of claim 17 , wherein the TLV comprises the Node Attribute TLV and the at least one sub-TLV comprises a connectivity matrix sub-TLV.

19. The apparatus of claim 17 , wherein the TLV comprises the Node Attribute TLV and the at least one sub-TLV comprises wavelength converter pool information.

20. The apparatus of claim 17 , wherein the TLV comprises the Link Set TLV and the at least one sub-TLV is selected from the group consisting essentially of a port wavelength restrictions sub-TLV, an available wavelengths sub-TLV, and a shared backup wavelengths sub-TLV.

21. The apparatus of claim 17 , wherein the control plane controller implements a routing flooding protocol to limit a frequency of RWA information updates based on the at least one sub-TLV.