Modular routing system

• US 6,754,219 B1
• Filed: 06/04/1999
• Issued: 06/22/2004
• Est. Priority Date: 06/04/1999
• Status: Expired due to Fees

• Current Assignee: RPX Clearinghouse LLC (RPX Corporation)
• Original Assignee: Nortel Networks Limited (Nortel Networks Corporation)
• Inventors: Berger, Michael, DiBurro, Larry, Lee, Robert, Miller, William, Cain, Bradley
• Primary Examiner(s): Chin, Wellington
• Assistant Examiner(s): PHAM, BRENDA H
• Application Number:
  US09/326,733
• Time in Patent Office: 1,845 Days
• Field of Search: 370/351, 370/360, 370/395.5, 370/395.52, 370/401, 370/402, 370/419, 370/465, 370/469, 709/230, 709/236, 709/238, 709/250, 709/237
• US Class Current: 370/401
• CPC Class Codes: H04L 45/00 Routing or path finding of packets in data switching networks routing or path finding in wireless networks H04W40/00
• CPC Class Codes: H04L 45/56 Routing software

Abstract

A routing device includes a routing application program interface that routing programs utilize to route data packets to other devices in a network. To that end, the routing device includes a processor for executing a routing program, a plurality of functional modules that control the operation of the routing device and forward data packets to the other network devices as specified by the routing program, and the routing application program interface operatively coupled with the processor. The routing program utilizes a set of specified commands associated with the routing application program interface for interacting with the plurality of functional modules through the routing application program interface. The routing program specifies a data packet routing protocol, while the functional modules comprise at least one of hardware and software.

Claims

1. A routing device for routing data packets to network devices in a network, the routing device comprising:

a routing platform for executing a routing program;

a plurality of functional modules that control the operation of the routing platform;

a routing application program interface, disposed between the routing platform and the plurality of functional modules, the functional modules utilizing a fixed set commands associated with the routing application program interface, the routing application interface comprising a translator operable to translate commands received from the functional modules into commands for controlling the routing platform.

2. The routing device as defined by claim 1 wherein the routing application program interface controls the plurality of functional modules based upon commands received from the routing program.

3. The routing device as defined by claim 1 wherein the plurality of functional modules includes an operating system, the routing application program interface including a system services module that provides operating system services in combination with the operating system.

4. The routing device as defined by claim 1 wherein the routing application program interface includes at least one of a control path module that controls communication between software programs executing on the routing device, and management and configuration module that controls management and configuration processes on the routing device.

5. The routing device as defined by claim 1 wherein the routing platform executes a plurality of routing programs, the routing application program interface providing a standard interface to the plurality of function modules for all routing programs executing on the routing platform.

6. The routing device as defined by claim 1 wherein the routing program includes a plurality of programs including control programs that control routing of data packets, and utility programs that service the control programs.

7. The routing device as defined by claim 6 wherein the utility programs include management and configuration programs that cooperate with a management and configuration module on the routing application program interface.

8. The routing device as defined by claim 1 wherein the routing program is a set of IP core applications that forward data packets in accord with the IP protocol.

9. The routing device as defined by claim 1 wherein the routing program implements a network layer routing protocol.

10. The routing device as defined by claim 1 wherein the routing program is a set of Wide Area Network core applications that implement a wide area network protocol.

11. The routing device as defined by claim 10 wherein the routing program specifies a link layer routing protocol.

12. The routing device as defined by claim 11 wherein the routing program specifies the asynchronous transfer mode protocol.

13. The routing device as defined by claim 1 wherein the routing platform includes a forwarding engine that operates in accord with instructions received from the routing application program interface.

14. The routing device as defined by claim 1 wherein the routing application program interface is a framework.

15. The routing device as defined by claim 1 wherein the routing application program interface includes a plurality of API modules that each perform a specified function, each API module having an associated set of commands that are utilized by the routing program to control each API module.

16. The routing device as defined by claim 1 wherein the routing program communicates with the plurality of functional modules via the application program interface.

17. An apparatus for routing data packets to network devices in a network, the apparatus comprising:

a routing platform that forwards the data packets to other network devices in the network, the routing platform including a processor for executing at least one routing program, the data packets being forwarded to the other network devices by the routing platform as specified by the at least one routing program; and

a routing application program interfere coupled between the routine platform and the at least one routing program for translating commands received from the at least one routing program into routing platform specific commands, wherein the routing application program interface provides the at least one routing program with a standard interface for communicating with the routing platform.

18. The apparatus as defined by claim 17 wherein at least one routing program is an IP core application that forwards data packets in accord with the IP protocol.

19. The apparatus as defined by claim 17 wherein the at least one routing program is a network layer routing protocol.

20. The apparatus as defined by claim 17 wherein the at least one routing program is a Wide Area Network core application that forwards data packets in accord with a wide area network protocol.

21. The apparatus as defined by claim 20 wherein the at least one routing program specifies a link layer routing protocol.

22. The apparatus as defined by claim 21 wherein the at least one routing program specifies the asynchronous transfer mode protocol.

23. The apparatus as defined by claim 17 wherein the routing platform includes a forwarding engine.

24. The apparatus as defined by claim 17 wherein the routing application program interface is a framework.

25. The apparatus as defined by claim 17 wherein the routing application program interface includes a plurality of API modules that each perform a specified function, each API module having an associated set of commands that is utilized by the at least one routing program to control the API module.

26. The apparatus as defined by claim 25 wherein the processor executes a plurality of routing programs, the plurality of API modules including a control path module that controls communication between the plurality of routing programs executing on the routing platform.

27. The apparatus as defined by claim 17 wherein the at least one routing program utilizes a set of specified commands associated with the routing application program interface for communicating with the routing platform.

28. The apparatus as defined by claim 27 wherein all routing programs interact with the routing application program interface via the set of specified commands, no routing program communicating messages directly to the routing platform.

29. An apparatus for routing data packets to network devices in a network, the apparatus comprising:

a routing platform that forwards the data packets to network devices in the network, the platform including a processor for executing a routing program, the data packets being forwarded to the network devices in the manner specified by the routing program; and

a routing application program interface disposed between the routing platform and the routing program, the executing routing program utilizing a set of specified commands associated with the routing application program interface for communicating with the routing platform , the routing application program for translating the set of specified commands into routing platform specific commands.

30. The apparatus as defined by claim 29 wherein the executing routing program utilizes the set of specified commands to communicate with the routing platform through the routing application program interface.

31. The apparatus as defined by claim 29 wherein no routing program communicates directly with the routing platform.

32. The apparatus as defined by claim 29 wherein the at least one routing program is an IP core application that forwards data packets in accord with the IP protocol.

33. The apparatus as defined by claim 29 wherein the at least one routing program is a network layer routing protocol.

34. The apparatus as defined by claim 29 wherein the at least one routing program is a Wide Area Network core application that forwards data packets in accord with a wide area network protocol.

35. The apparatus as defined by claim 34 wherein the at least one routing program specifies a link layer routing protocol.

36. The apparatus as defined by claim 35 wherein the at least one routing program specifies the asynchronous transfer mode protocol.

37. The apparatus as defined by claim 29 wherein the routing platform includes a forwarding engine that operates in response to commands from the routing application program interface.

38. The apparatus as defined by claim 29 wherein the routing application program interface includes a plurality of API modules that each perform a specified function, each API module having an associated sub-set of the set of commands, each sub-set being utilized by the at least one routing program to control one of the API modules.

39. The apparatus as defined by claim 38 wherein the processor executes a plurality of routing programs, the plurality of API modules including a control path module that controls communication between a plurality of routing programs executing on the routing platform.

40. The apparatus as defined by claim 29 wherein the routing application program interface provides a standard interface for all routing programs executing on the routing platform.