Shared media communications in a virtual connection network

• US 6,216,166 B1
• Filed: 02/20/1998
• Issued: 04/10/2001
• Est. Priority Date: 02/20/1998
• Status: Expired due to Term

• Current Assignee: RPX Corporation
• Original Assignee: ADC Telecommunications Incorporated (TE Connectivity Limited)
• Inventors: Hughey, Richard T., Frank, George N., Zheng, Dan
• Primary Examiner(s): VU, VIET DUY
• Application Number:
  US09/026,580
• Time in Patent Office: 1,145 Days
• Field of Search: 709/223, 709/224, 709/225, 709/230, 709/231, 709/236, 709/237, 709/238, 709/245, 709/246, 370/395, 370/401, 370/466, 370/474
• US Class Current: 709/238
• CPC Class Codes: H04L 2012/5612 Ring
• CPC Class Codes: H04L 2012/5658 using the AAL5
• CPC Class Codes: H04L 2012/5667 IP over ATM
• CPC Class Codes: H04L 61/5038 for local use, e.g. in LAN or USB networks, or in a controller area network [CAN]
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers
• CPC Class Codes: H04L 69/323 in the physical layer [OSI layer 1]
• CPC Class Codes: H04L 69/325 in the network layer [OSI layer 3], e.g. X.25 H04L69/16 takes precedence
• CPC Class Codes: H04Q 11/0478 Provisions for broadband connections

Abstract

A local area network (LAN) type group of data comprising a reserved value, a source media access control (MAC) address, and a destination MAC address. The source MAC address corresponds to a network element that originates the LAN type group of data. The destination MAC address uniquely corresponds to one or more network elements designated to receive the LAN type group of data.

Claims

1. A local area network (LAN) type group of data, comprising:

a reserved value that indicates a virtual connection to be used for communicating data to network elements for use by the network elements, wherein the network elements provide at least one of switching and transport functions;

a source media access control (MAC) address of a source network element;

a destination MAC address of a destination network element; and

payload data.

2. The LAN type group of data of claim 1, wherein payload data comprises management data.

3. The LAN type group of data of claim 1, wherein the source MAC address corresponds to a network element that originates the LAN type group of data.

4. The LAN type group of data of claim 1, wherein the destination MAC address corresponds to a unique network element designated to receive the LAN type group of data.

5. The group of data of claim 1, wherein the destination MAC address corresponds to a plurality of network elements to which the LAN type group of data is multicasted.

6. An local area network (LAN) type group of data, comprising:

a reserved value that indicates a virtual connection to be used for LAN type communications among network elements that provide at least one of switching and transport functions;

a source media access control (MAC) address;

a destination MAC address;

payload data; and

wherein the LAN type group of data is an asynchronous transfer mode (ATM) cell, and the source and destination MAC addresses are stored in nibbles designated for use by a virtual channel indicator.

33. The LAN type group of data of claim 6, wherein the payload data comprises management data.

34. The LAN type group of data of claim 6, wherein the source MAC address corresponds to a network element that originates the LAN type group of data.

35. The LAN type group of data of claim 6, wherein the destination MAC address corresponds to a unique network element designated to receive the LAN type group of data.

36. The LAN type group of data of claim 6, wherein the destination MAC address corresponds to a plurality of network elements to which the LAN type group of data in multicasted.

7. An Asynchronous Transfer Mode (ATM) cell, comprising:

a first octet including first and second nibbles respectively containing first and second portions of a reserved virtual path indicator;

a second octet including third and fourth nibbles, wherein the third nibble contains a third portion of the reserved virtual path indicator, and the fourth nibble contains a first portion of a source media access control (MAC) address;

a third octet including fifth and sixth nibbles, wherein the fifth nibble contains a second portion of a source MAC address, and the sixth nibble contains a first portion of a destination MAC address;

a fourth octet including a seventh nibble containing a second portion of a destination MAC address; and

forty eight octets containing a cell payload.

8. The ATM cell of claim 7, wherein the cell payload contains management data.

9. The ATM cell of claim 7, wherein the source MAC address corresponds to a network element that originates the ATM cell.

10. The ATM cell of claim 7, wherein the destination MAC address corresponds to a unique network element that is designated to receive the ATM cell.

11. The ATM cell of claim 7, wherein the destination MAC address corresponds to a plurality of network elements to which the ATM cell is multicasted.

12. A virtual connection network, comprising;

a plurality of network elements that each provide at least one of switching and transport functions;

a policing network element that terminates a local area network (LAN) type group of data with a corrupted media access address of one of the plurality of network elements; and

transmission media coupling the plurality of network elements and policing network element to one another.

13. A method of operating a virtual connection network, comprising:

disassembling a large group of data into local area network (LAN) type groups of data including source and destination media access control (MAC) addresses and reserved identifiers for communicating data to network elements for use by the network elements, wherein the network elements provide at least one of switching and transport functions;

propagating the LAN type groups of data from a first network element of the source MAC address, to a second network element of the destination MAC address; and

reassembling the large group of data from the LAN type groups of data in the second network element.

14. The method of claim 13, wherein disassembling and reassembling a large group of data are performed on a large group of data that includes management data.

15. The method of claim 13, wherein disassembling a large group of data includes the step of disassembly, of a large group of data that is an Internet Protocol packet, with a modified ATM adaption type layer 5 protocol.

16. The method of claim 13, wherein reassembling the large group of data includes reassembling a large group of data that is an Internet Protocol packet, with a modified ATM adaption type layer 5 protocol.

17. The method of claim 13, further comprising terminating the LAN type groups of data at the second network element.

18. The method of claim 13, further comprising terminating at least one of the LAN type groups of data at the first network element.

19. The method of claim 13, further comprising terminating at least one of the LAN type groups of data at a policing network element.

20. The method of claim 13, further comprising resetting the network elements for a period greater than approximately 500 milliseconds to terminate all LAN type groups of data.

21. The method of claim 20, wherein resetting the network elements comprises resetting the network elements for a period greater than approximately 50 milliseconds to terminate all LAN type groups of data.

22. A method of automatically configuring a virtual connection network, comprising:

adding a new network element to the virtual connection network including a plurality of network elements and wherein the network elements each provide at least one of switching and transport functions; and

broadcasting at least one local area network (LAN) type group of data, containing the new network element'"'"'s media access control (MAC) address, from the new network element to the plurality of network elements.

23. A method of obtaining the media access control (MAC) address of a network element (NE) that provides at least one of switching and transport functions in a virtual connection network, comprising:

broadcasting at least one group of data that forms an Internet Protocol (IP) packet and contains the IP address of a destination NE;

receiving the at least one group of data at the destination NE;

sending the MAC address in at least one group of data from the destination NE to the source NE; and

sending data in local area network (LAN) type groups of data to the destination NE.

24. The method of claim 23, wherein the step of broadcasting uses an address resolution protocol.

25. A method for managing a virtual connection network, the method comprising:

generating management data for at least one network element of the virtual connection network, wherein the network elements each provide at least one of switching and transport functions;

generating at least one packet containing the management data and an identifier that identifies a virtual connection for communicating the management data to the at least one network element;

transmitting the at least one packet to the at least one network element over the virtual connection network; and

terminating the packet at the at Least one network element.

26. The method of claim 25, wherein generating at least one packet comprises generating at least one packet for a single network element.

27. The method of claim 25, wherein generating at least one packet comprises generating at least one packet for multicasting to at least two network elements.

28. The method of claim 25, wherein transmitting the at least one packet comprises, at each network element that processes the at least one packet:

determining whether the packet contains management data; and

when the packet contains management data and a media access control (MAC) address corresponds to the network element, copying and forwarding the packet.

29. The method of claim 25, wherein generating at least one packet comprises generating a plurality of packets.

30. The method of claim 29, and further comprising:

receiving the plurality of packets at the at least one network element;

combining the management data from the plurality of packets based on a source MAC address.

31. A virtual connection network, comprising:

a plurality of network elements coupled to form a ring, wherein the plurality of network elements each provide at least one of switching and transport functions;

wherein each network element includes a media access (MAC) address; and

a virtual connection dedicated to transmitting packets including management data to the network elements, for use by the network elements, based on the MAC addresses of each of the network elements.

32. The virtual connection network of claim 31, wherein at least two of the network elements include a common MAC address to allow multicasting of data to the at least two network elements.