Architecture and method for framing control and data bursts over 10 Gbit Ethernet with and without WAN interface sublayer support

• US 7,266,296 B2
• Filed: 06/11/2003
• Issued: 09/04/2007
• Est. Priority Date: 06/11/2003
• Status: Active Grant

• Current Assignee: Tahoe Research Limited (f/k/a Learndale Limited) (Vector Capital Corporation)
• Original Assignee: Intel Corporation
• Inventors: Ovadia, Shlomo, Maciocco, Christian
• Primary Examiner(s): SEDIGHIAN, REZA
• Application Number:
  US10/459,781
• Publication Number:
  US 20040252995A1
• Time in Patent Office: 1,546 Days
• Field of Search: 398/51, 398/54, 398/45, 398/49, 398/50, 398/55, 398/56, 398/57, 398/58, 398/66, 398/59, 398/46, 398/47, 398/48, 370/400, 370/401
• US Class Current: 398/51
• CPC Class Codes: H04J 14/02 Wavelength-division multiplex systems
• CPC Class Codes: H04Q 11/0066 Provisions for optical burst or packet networks
• CPC Class Codes: H04Q 11/0071 Provisions for the electrical-optical layer interface

Abstract

An optical network, which includes edge and switching nodes, optically communicate information formatted into statistically multiplexed control and data bursts and/or metadata that are framed within Wide Area Network Interface Sublayer (WIS) frames for 10 Gb/s Ethernet according to the IEEE 802.3ae Standard. Frames with control bursts are transmitted prior to frames with related data bursts to configure optical switches in selected switching nodes so that the frames with the data bursts do not require O-E-O conversion. Another optical network uses frames that are data-rate and format compatible with the OC-192 synchronous optical network (SONET) transmission format. The ingress node to the optical network inserts the MAC address of the egress node rather than the IP address of the data destination. For both networks, mapping table information is exchanged in the optical network in an out-of-band network.

Claims

1. A system comprising:

a component to provide a first frame having information formatted into a plurality of bursts including a first burst, the plurality of bursts including the first burst being included in a first payload portion of a first synchronous payload envelope (SPE) of the first frame;

an optical interface to optically transmit the first frame to a node of an optical network so as to be data-rate and format compatible with a synchronous optical network (SONET), the node comprising an optical switch that is selectively configurable in response to a control burst included in an optical frame.

2. The system of claim 1 wherein in response to the first burst comprising a data burst, the system is to selectively optically transmit a second frame having a second SPE with a second payload portion that includes a control burst that is associated with the data burst, the system optically transmitting the second frame to the node prior to optically transmitting the first frame.

3. The system of claim 1 wherein in response to the first burst comprising a control burst, the system is to selectively optically transmit a third frame having a third SPE with a third payload portion that includes a data burst associated with the control burst, the system optically transmitting the third frame to the node after a predetermined time delay after optically transmitting the first frame.

4. The system of claim 1 wherein the optical network comprises a wavelength division multiplexed (WDM) network.

5. The system of claim 1 wherein the first frame comprises a 10 gigabit per second Ethernet frame with Wide Area Network Interface Sub-layer (WIS).

6. The system of claim 1 wherein the optical interface is to transmit optical signals that are data-rate and format compatible with synchronous optical network (SONET) ANSI T1.105-2001.

7. The system of claim 6 wherein the data-rate and format of the optical signals conform to Optical Carrier (OC)-192 SONET/SDH specifications.

8. The system of claim 1 wherein the first SPE of the first frame further comprises a path overhead portion.

9. The system of claim 1 wherein the first frame further comprises an overhead portion separate from the first SPE to store information related to the optical network.

10. The system of claim 9 wherein the information comprises metadata.

11. The system of claim 1 wherein the system is to provide a network layer address, a media access control (MAC) layer address and a Section Trace string via a second network that interconnects two or more nodes of the optical network.

12. A method comprising:

formatting information into a plurality of bursts including a first burst;

including the plurality of bursts including the first burst in a first payload portion of a first synchronous payload envelope;

forming a first frame including the first synchronous payload envelope (SPE); and

optically transmitting the first frame to a node of photonic burst (PBS) network so as to be data-rate and format compatible with a synchronous optical network (SONET), the node comprising an optical switch that is selectively configurable in response to a control burst included in an optical frame.

13. The method of claim 12 wherein in response to the first burst comprising a data burst, the method further comprises selectively optically transmitting to the node a second frame that includes a second SPE prior to optically transmitting the first frame, the second SPE including a second payload portion, the second payload portion to include a control burst associated with the data burst.

14. The method of claim 12 wherein in response to the first burst comprising a control burst, the method further comprises selectively optically transmitting to the node a third frame that includes a third SPE after a predetermined time delay after optically transmitting the first frame, the third SPE including a third payload portion to include a data burst associated with the control burst.

15. The method of claim 12 wherein the PBS network comprises a wavelength division multiplexed (WDM) network.

16. The method of claim 12 wherein the first frame comprises a 10 gigabit per second Ethernet frame with Wide Area Network Interface Sub-layer (WIS).

17. The method of claim 12 wherein optically transmitting the first frame further comprises transmitting optical signals that are data-rate and format compatible with synchronous optical network (SONET) ANSI T1.105-2001.

18. The method of claim 17 wherein the data-rate and format of the optical signals conform to Optical Carrier (OC)-192 specifications.

19. The method of claim 12 wherein the first SPE of the first frame further comprises a path overhead portion.

20. The method of claim 12 wherein the first frame further comprises an overhead portion separate from the first SPE to store information related to the PBS network.

21. The method of claim 20 wherein the information comprises metadata.

22. The method of claim 12 further comprising providing a network layer address, a media access control (MAC) layer address and a Section Trace string related to a node that is part of the PBS network via a second network that interconnects two or more nodes of the optical network.

23. An optical network, comprising:

a first edge node, comprising;

a component to provide a first frame having information formatted into a plurality of bursts including a first burst, the plurality of bursts including the first burst being included in a first payload portion of a first synchronous payload envelope (SPE) of the first frame; and

an optical interface to optically transmit the first frame to be data-rate and format compatible with a synchronous optical network (SONET);

a plurality of optical switching nodes each including an optical switch that is selectively configurable in response to a control burst included in an optical frame received by that optical switching node, wherein a first switching node of the plurality of switching nodes is coupled to the first edge node; and

a second edge node coupled to a second optical switching node of the plurality of optical switching nodes.

24. The optical network of claim 23 wherein when the first burst is a data burst, the first edge node is to optically transmit a second frame having a second SPE with a second payload portion that includes a control burst that corresponds to the data burst, the first edge node optically transmitting the second frame prior to optically transmitting the first frame.

25. The optical network of claim 23 wherein in response to the first burst comprising a control burst, the first edge node is to selectively optically transmit a third frame having a third SPE with a third payload portion that includes a data burst corresponding to the control burst, the first edge node optically transmitting the third frame to the first optical switching node after a predetermined time delay after optically transmitting the first frame.

26. The optical network of claim 23 wherein the optical network comprises a wavelength division multiplexed (WDM) network.

27. The optical network of claim 23 wherein the first frame comprises a 10 gigabit per second Ethernet frame with Wide Area Network Interface Sub-layer (WIS).

28. The optical network of claim 23 wherein the optical interface is to transmit optical signals that are data-rate and format compatible with synchronous optical network (SONET) ANSI T1.105-2001.

29. The optical network of claim 28 wherein the data-rate and format of the optical signals conform to Optical Carrier (OC)-192 specifications.

30. The optical network of claim 23 wherein the first SPE of the first frame further comprises a path overhead portion.

31. The optical network of claim 23 wherein the first frame further comprises an overhead portion separate from the first SPE to store information related to the optical network.

32. The optical network of claim 31 wherein the information comprises metadata.

33. The optical network of claim 23 wherein the system to provide a network layer address, a media access control (MAC) layer address and a Section Trace string via a second network that interconnects two or more nodes of the optical network.

34. A system comprising:

a component to provide a first frame having information formatted into a first burst, the first burst being included in a first payload portion of a first synchronous payload envelope (“

SPE”

), the first frame including a media access control (MAC) address of an egress node of a photonic burst switched (“

PBS”

) network and a network layer address of a data destination external to the PBS network; and

an optical interface to optically transmit the first frame to a node of the PBS network, the node comprising an optical switch that is selectively configurable in response to a control burst included in an optical frame.

35. The system of claim 34 wherein in response to the first burst comprising a data burst, the system is to selectively optically transmit a second frame having a second SPE with a second payload portion that includes a control burst associated with the data burst, the system optically transmitting the second frame prior to optically transmitting the first frame.

36. The system of claim 34 wherein in response to the first burst comprising a control burst, the system is to selectively optically transmit a third frame having a third SPE with a third payload portion that includes a data burst associated with the control burst, the system optically transmitting the third frame after optically transmitting the first frame.

37. The system of claim 34 wherein the optical network comprises a wavelength division multiplexed (WDM) network.

38. The system of claim 34 wherein the first frame comprises a frame compatible with synchronous optical network (SONET) ANSI T1.105-2001.

39. The system of claim 38 wherein the frame has a data-rate and format compatible with Optical Carrier (OC)-192 SONET specifications.

40. The system of claim 34 wherein the network layer address of the data destination comprises an Internet Protocol (IP) address.

41. The system of claim 34 wherein the system to provide its network layer address and media access control (MAC) layer address on a second network that includes a plurality of nodes of the optical network.

42. A method comprising:

formatting information into a first burst at an ingress node of a photonic burst switched (“

PBS”

) network;

including the first burst in a first payload portion of a first synchronous payload envelope;

forming a first frame including the first synchronous payload envelope (SPE), the first frame further comprising a media access control (MAC) address of an egress node of the PBS network and a network layer address of a data destination external to the optical network;

optically transmitting the first frame to a node of the PBS network, the node comprising an optical switch that is selectively configurable in response to a control burst included in an optical frame; and

receiving network layer addresses and MAC layer addresses of other edge nodes coupled to the PBS network at the ingress node via an out-of-band (“

OOB”

) network that interconnects the other edge nodes to the ingress node.

43. The method of claim 42 wherein in response to the first burst comprising a data burst, the method further comprises selectively optically transmitting a second frame that includes a second SPE prior to optically transmitting the first frame, the second SPE including a second payload portion, the second payload portion to include a control burst associated with the data burst.

44. The method of claim 42 wherein in response to the first burst comprising a control burst, the method further comprises selectively optically transmitting a third frame that includes a third SPE after optically transmitting the first frame, the third SPE including a third payload portion to include a data burst associated with the control burst.

45. The method of claim 42 wherein the PBS network comprises a wavelength division multiplexed (WDM) network.

46. The method of claim 42 wherein the first frame is compatible with synchronous optical network (SONET) ANSI T1.105-2001.

47. The method of claim 46 wherein the first frame has a data-rate and format compatible with Optical Carrier (OC)-192 specifications.

48. The method of claim 42 wherein the network layer address of the data destination comprises an Internet Protocol (IP) address.

49. A photonic burst switched (“

PBS”

) network, comprising;

first and second edge nodes, the first edge node comprising;

a component to provide a first frame having information formatted into a first burst, the first burst being included in a first payload portion of the first frame, the first frame including a media access control (MAC) address of an egress node of the PBS network and a network layer address of a data destination external to the PBS network; and

an optical interface to optically transmit the first frame to a node of the PBS network, the node comprising an optical switch that is selectively configurable in response to a control burst included in an optical frame;

an out-of-band (“

OOB”

) network interconnecting the first and second edge nodes to provide network layer addresses and MAC layer addresses associated with the first and second edge nodes to each other; and

a plurality of optical switching nodes each including an optical switch that is selectively configurable in response to a control burst included in an optical frame received by that optical switching node, wherein first and second optical switching nodes of the plurality of optical switching nodes are respectively coupled to the first and second edge nodes.

50. The PBS network of claim 49 wherein in response to the first burst comprising a data burst, the system is to selectively optically transmit a second frame having a second SPE with a second payload portion that includes a control burst associated with the data burst, the system optically transmitting the second frame prior to optically transmitting the first frame.

51. The PBS network of claim 49 wherein in response to the first burst comprising a control burst, the system is to selectively optically transmit a third frame having a third SPE with a third payload portion that includes a data burst corresponding to the control burst, the system optically transmitting the third frame after optically transmitting the first frame.

52. The PBS network of claim 49 wherein the PBS network comprises a wavelength division multiplexed (WDM) network.

53. The PBS network of claim 49 wherein the first frame is compatible with synchronous optical network (SONET) ANSI T1.105-2001.

54. The PBS network of claim 53 wherein the first frame has a data-rate and format compatible with Optical Carrier (OC)-192 specifications.

55. The PBS network of claim 49 wherein the network layer address of the data destination comprises an Internet Protocol (IP) address.