Node registering method

• US 20100208616A1
• Filed: 11/27/2007
• Published: 08/19/2010
• Est. Priority Date: 11/27/2006
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Schieder, Andreas, Kampmann, Markus, Rembarz, Rene, Hartung, Frank
• Granted Patent: US 8,737,261 B2
• Time in Patent Office: Days
• US Class Current: 370/254
• CPC Class Codes: H04L 61/4541 Directories for service discovery
• CPC Class Codes: H04L 61/4552 Lookup mechanisms between a plurality of directories; Synchronisation of directories, e.g. metadirectories

Abstract

A method is described for registering a node of an underlying network at an overlay network, characterized in that the node of the underlying network registers at a registration node which initiates a propagation of registration information towards the overlay network.

Claims

1. Method for registering a node of an underlying network at an overlay network, characterized in that the node of the underlying network registers at a registration node which initiates a propagation of registration information towards the overlay network.

2. The method according to claim 1, wherein the registration information comprises at least one of transport level and application-level information.

3. The method according to claim 1 or 2, wherein said node of said underlying network registers identity and address information for routing in said underlying network at said registration node.

4. The method of claim 3, wherein said identity information is a Node ID, and said address information is a domain address.

5. The method according to one of the preceding claims, wherein said node of the underlying network registers overlay node capability information at said registration node and said registration information propagated towards the overlay network comprises said overlay node capability information.

6. The method according to one of the preceding claims, wherein said node of the underlying network comprises multiple interfaces and registers preference information regarding the use of the multiple interfaces at said registration node.

7. The method according to one of the preceding claims, wherein said registration information propagated towards said the overlay network comprises topology information of said underlying network.

8. The method of one of the preceding claims, wherein said overlay network comprises a network topology creating node for receiving the registration information propagated towards the overlay network, and the network topology creating node generating a network topology of at least a part of the underlying network from the received registration information.

9. The method of one of the preceding claims, wherein the registration information is propagated towards a directory function of said overlay network.

10. The method of claim 9, wherein said directory function of said overlay network is implemented at said registration node.

11. The method of claim 9, wherein said directory function of said overlay network is implemented at a different node of said underlying network than said registration node.

12. The method of claim 11, wherein said propagation of registration information towards the overlay network comprises forwarding the registration information from said registration node to said directory function of said overlay network.

13. The method according to claim 12, wherein said underlying network comprises a plurality of registration nodes, and at least one of said plurality of registration nodes of a propagation path along which the registration information is propagated implements the directory function functionality.

14. The method of one of claims 11 to 13, wherein said propagation of registration information towards the overlay network comprises sending a reply with a pointer to the directory function from the registration node to said node of said underlying network, and said node of said underlying network registering said registration information at said directory function directly.

15. The method according to one of the preceding claims, wherein the underlying network comprises multiple domains.

16. The method according to any of the preceding claims, wherein the node of the underlying network is comprised in a first domain.

17. The method according to claim 16, wherein the registration information is sent from the underlying network to the overlay network by a second registration node located in a second domain.

18. The method according to claim 16 or 17, wherein the second and the first domain are the same domain.

19. The method according to claim 17 or 18, wherein the first and the second registration node are the same node.

20. The method according to any of the preceding claims, wherein the registration node has a routing functionality.

21. The method according to one of the preceding claims, wherein said overlay network is a transport network comprising nodes that are service aware.

22. The method according to one of the preceding claims, wherein said node of the underlying network includes an overlay layer identifier in a registration message to said registration node.

26. A system adapted to perform any of the steps of the method of one of claims 1 to 25.

27. A computer program comprising code adapted to perform any of the steps of the method of one of claims 1 to 25 when executed.

28. A computer program product comprising the computer program of claim 27.

23. A method of controlling a registration node of a domain of an underlying network, wherein the registration node is controlled to receive registration information related to a node of a first domain of the underlying network and to initiate a propagation of said registration information towards an overlay network for registering the node at the overlay network.

24. The method according to claim 23, wherein the node of the first domain is a physical node.

25. A method of controlling a network topology creating node of an overlay network, the network topology creating node being controlled to receive registration information related to multiple nodes of at least one domain of an underlying network, and to generate a network topology of at least a part of the underlying network from the received registration information.

29. A registration node of a domain of an underlying network, characterized in that the registration node is adapted to receive registration information related to a node of a first domain of the underlying network and to initiate a propagation of said registration information towards an overlay network for registering the node at the overlay network.

30. The registration node according to claim 29, wherein the node of the first domain is a physical node.

31. The registration node according to claim 29 or 30, said registration node being arranged for propagating said registration information towards a directory function of said overlay network.

32. The registration node according to claim 31, wherein said directory function of said overlay network is implemented at said registration node.

33. The registration node according to claim 31, wherein said directory function of said overlay network is implemented at a different node of said underlying network than said registration node, and wherein said registration node is arranged for forwarding the registration information from said registration node to said directory function of said overlay network.

34. The registration node of one of claims 31 to 33, wherein said registration node is arranged for sending to said node of said first domain a reply with a pointer to the directory function.

35. The registration node according to one of claims 29 to 34, wherein said registration node is arranged for receiving said registration information directly from said node of said first domain, and/or from another registration node.

36. A network topology creating node of an overlay network, the network topology creating node being arranged for receiving registration information related to multiple nodes of at least one domain of an underlying network, the network topology creating node being adapted to generate a network topology of at least a part of the underlying network from the received registration information.

37. The network topology creating node of claim 36, wherein said network topology creating node implements a directory function of said overlay network.

38. The network topology creating node of claim 36 or 37, wherein said network topology creating node implements a registration functionality on an underlying network level.