Method and apparatus for transporting network management information in a telecommunications network

• US 7,929,573 B2
• Filed: 02/12/2009
• Issued: 04/19/2011
• Est. Priority Date: 04/25/2000
• Status: Expired due to Term

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Roberson, Charles Scott, Le, Phu Son, Elliott, Paul M.
• Primary Examiner(s): PHAN, MAN U
• Application Number:
  US12/370,455
• Publication Number:
  US 20090154501A1
• Time in Patent Office: 796 Days
• Field of Search: 370347-362, 370465-498, 370541-545, 398 83- 97, 709223-241
• US Class Current: 370/498
• CPC Class Codes: H04J 2203/0058 Network management, e.g. Intelligent nets
• CPC Class Codes: H04J 3/12 Arrangements providing for calling or supervisory signals
• CPC Class Codes: H04L 41/00 Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
• CPC Class Codes: H04L 41/0213 Standardised network management protocols, e.g. simple network management protocol [SNMP]
• CPC Class Codes: H04L 41/022 Multivendor or multi-standard integration
• CPC Class Codes: H04L 41/34 Signalling channels for network management communication
• CPC Class Codes: H04L 41/342 between virtual entities, e.g. orchestrators, SDN or NFV entities

Abstract

Network management information (NMI) contained in a first set of byte locations of a received frame is relocated to a second set of byte locations of another frame. The NMI is then transported through network elements using the second set of byte locations until the NMI is to be transported to a compatible network element, which can understand the NMI. At which time, the NMI is relocated back to the first set of byte locations of frames destined for the compatible network element. The relocation of the NMI from a first set of byte locations to a second set of byte locations allows the NMI to be transparently transported through incompatible network elements.

Claims

1. A network device comprising:

a cross-connect, wherein

said cross-connect is configured to receive a first frame and a second frame,

said first frame and said second frame are time-division multiplexed frames,

said first frame is configured to be processed according to a first protocol,

said second frame is configured to be processed according to a second protocol,

said first protocol and said second protocol are incompatible with one another,

said cross-connect is configured to relocate first network management information from a first set of byte locations of said first frame to a second set of byte locations of said second frame, and

said cross-connect is further configured to insert second network management information into said first set of byte locations of said first frame.

2. The network device of claim 1, further comprising:

a control vector memory, wherein

said cross-connect is configured to receive a plurality of time slots,

said time slots comprise said first frame and said second frame, and

said control vector memory is coupled to control said cross-connect by virtue of being configured to cause said cross-connect to cross-connect said time slots.

3. The network device of claim 2, wherein said cross-connect comprises:

a plurality of TDM processors, wherein

said control vector memory is coupled to control each of said TDM processors by virtue of being configured to cause said each of said TDM processors to select at least one of said time slots.

4. The network device of claim 3, wherein said each of said TDM processors comprise:

an output interface; and

a multiplexer, wherein

an output of said multiplexer is coupled to said output interface, and

said control vector memory is coupled to control said multiplexer.

5. The network device of claim 3, further comprising:

a plurality of input buffers, wherein

each of said input buffers is coupled to at least one of said TDM processors,

said control vector memory is coupled to control said each of said input buffers,

said cross-connect is configured to receive a plurality of incoming time slots,

said cross-connect is configured to output a plurality of outgoing time slots,

said input buffers are configured to allow said incoming time slots to be sequentially written into said input buffers, and

said input buffers are configured to allow said outgoing time slots to be randomly read from said input buffers.

6. The network device of claim 5, wherein said each of said TDM processors comprise:

a multiplexer, wherein

said control vector memory is coupled to control said multiplexer to select an output of one of said input buffers.

7. The network device of claim 1, further comprising:

a message router, wherein

said message router is configured to extract and route said network management information, and

an output of said message router is coupled to a first input of said cross-connect.

8. The network device of claim 7, further comprising:

a timing, communication, and control (TCC) processor, wherein

said TCC processor comprises said cross-connect, said control vector memory and said message router.

9. The network device of claim 8, wherein

an output of said cross-connect is coupled to an output of said TCC processor,

a second input of said cross-connect is coupled to an input of said TCC processor, and

an input of said message router is coupled to said input of said TCC processor.

10. The network device of claim 8, further comprising:

a first system communications link (SCL) bus, coupled to said input of said TCC processor, and

a second SCL bus, coupled to said output of said TCC processor, wherein

said cross-connect is configured to receive a plurality of incoming time slots via said first SCL bus,

said cross-connect is configured to output a plurality of outgoing time slots via said second ACL bus.

11. The network device of claim 9, further comprising:

a control vector memory, wherein

said control vector memory is coupled to control said cross-connect, and

said control vector memory is configured to cause said cross-connect to control a cross-connection of a plurality of said time slots.

12. The network device of claim 11, wherein

said control vector memory is configured to cause said cross-connect to control said cross-connection of said plurality of said time slots by virtue of being configured to cause said cross-connect to select one of said first input and said second input.

13. The network device of claim 11, wherein said cross-connect comprises:

a plurality of TDM processors, wherein

each of said TDM processors is configured to select at least one of said time slots, and

said control vector memory is coupled to control each of said TDM processors.

14. The network device of claim 13, further comprising:

a plurality of input buffers, wherein

said each of said TDM processors comprise

an output interface; and

a multiplexer,

an output of said multiplexer is coupled to said output interface,

said control vector memory is coupled to control said multiplexer,

each of said input buffers is coupled to at least one of said TDM processors,

said control vector memory is coupled to control said each of said input buffers, and

said control vector memory is coupled to control said multiplexer to select an output of one of said input buffers.

15. A network device comprising:

a cross-connect, wherein

said cross-connect comprises

a plurality of TDM processors, and

a plurality of input buffers,

a control vector memory is coupled to control each of said TDM processors,

an output of each of said input buffers is coupled to an input of at least one of said TDM processors

said cross-connect is configured to receive a first frame and a second frame,

said first frame and said second frame are time-division multiplexed frames,

said first frame is configured to be processed according to a first protocol,

said second frame is configured to be processed according to a second protocol,

said first protocol and said second protocol are incompatible with one another, and

said cross-connect is configured to relocate network management information from a first set of byte locations of said first frame to a second set of byte locations of said second frame, and

said cross-connect is further configured to insert second network management information into said first set of byte locations of said first frame.

16. The network device of claim 15, wherein said each of said TDM processors comprise:

an output interface; and

a multiplexer, wherein

an output of said multiplexer is coupled to said output interface, and

an input of said multiplexer is coupled to at least one of said input buffers.

17. The network device of claim 16, further comprising:

a control vector memory, wherein

said control vector memory is coupled to control said cross-connect.

18. The network device of claim 17, wherein

said control vector memory is coupled to control said cross-connect by virtue of being coupled to control said multiplexers and said input buffers.

19. The network device of claim 17, further comprising:

a message router, wherein

an output of said message router is coupled to a first input of said cross-connect.

20. The network device of claim 18, further comprising:

a timing, communication, and control (TCC) processor, wherein

said TCC processor comprises said cross-connect, said control vector memory and said message router.

21. The network device of claim 20, wherein

an output of said cross-connect is coupled to an output of said TCC processor,

a second input of said cross-connect is coupled to an input of said TCC processor, and

an input of said message router is coupled to said input of said TCC processor.

22. The network device of claim 21, further comprising:

a first system communications link (SCL) bus coupled to said input of said TCC processor, and

a second SCL bus coupled to said output of said TCC processor.

23. The network device of claim 21, wherein

said control vector memory is configured to cause said cross-connect to select one of said first input and said second input.