System And Method For Efficient Traffic Processing

• US 20060182118A1
• Filed: 02/01/2006
• Published: 08/17/2006
• Est. Priority Date: 02/01/2005
• Status: Abandoned Application

• Current Assignee: Hong Kong Applied Science And Technology Research Institute Co., Ltd.
• Original Assignee: Hong Kong Applied Science And Technology Research Institute Co., Ltd.
• Inventors: PANCHA, PRAMOD, HUNG, CHUN KIT, LAM, KENNETH
• Application Number:
  US11/275,864
• Publication Number:
  US 20060182118A1
• Time in Patent Office: Days
• US Class Current: 370/395.420
• CPC Class Codes: H04L 12/4641 Virtual LANs, VLANs, e.g. virtual private networks [VPN] LAN interconnection over a bridge based backbone H04L12/462; encapsulation techniques H04L12/4633; routing of packets H04L45/00; packet switches H04L49/00; virtual private networks for security H04L63/0272
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/13 in a LAN segment, e.g. ring or bus
• CPC Class Codes: H04L 47/2416 Real-time traffic
• CPC Class Codes: H04L 47/2433 Allocation of priorities to traffic types

Abstract

Disclosed herein is a method for traffic processing to improve the overall performance of data traffic network. The method comprises receiving a traffic having data width narrower than or equal to a predetermined data width; reformatting the received traffic into bus traffic of said predetermined data width; recognizing a specific traffic within the bus traffic; processing the bus traffic; prioritizing the specific traffic, such as voice traffic, over other traffic in said bus traffic; and outputting the bus traffic according to the prioritizing result. Thus, the method secures network resources for voice traffic and avoids frame flooding which may otherwise cause system breakdown. Further disclosed herein is a system for traffic processing. The system comprises a circuit for receiving and reformatting a traffic having data width narrower than or equal to a predetermined data width into bus traffic of said predetermined data width; a circuit for distinguishing a specific traffic within said bus traffic; a processor for processing the reformatted bus traffic; and a circuit for prioritizing the specific traffic over other traffic in said bus traffic. This invention further provides a device for secure frame transfer. The device comprises a receiving circuit for receiving a frame, and an ingress processor for processing the frame to decide whether or not to further process the frame.

Claims

1. A method for traffic processing comprising:

receiving a traffic of an original data width narrower than or equal to a predetermined data width;

reformatting said received traffic into bus traffic of said predetermined data width;

recognizing a specific traffic within said bus traffic;

processing said bus traffic;

prioritizing said specific traffic over other traffic in said bus traffic; and

outputting said bus traffic according to said prioritizing result.

2. The method of claim 1, further comprising unpacking said bus traffic to said original data width.

3. The method of claim 1, wherein said recognizing and said prioritizing further comprise recognizing and prioritizing a voice traffic.

4. The method of claim 1, wherein said prioritizing further comprises queuing said bus traffic of said predetermined data width.

5. The method of claim 1, wherein said prioritizing further comprises buffering said bus traffic of said predetermined data width.

6. The method of claim 1, wherein said processing further comprises at least one of Layer-2, Layer-3, and Layer-4 header processing.

7. The method of claim 1, wherein said received traffic is applied to at least one interface selected from the group of interfaces consisting of:

POS-PHY interface, SPI interface, PCI interface, PCMCIA interface, USB interface and CARDBUS interface.

8. The method of claim 1, wherein said predetermined data width is 64 bits.

9. A system for traffic processing comprising:

a circuit for receiving and reformatting a traffic having an original data width narrower than or equal to a predetermined data width into bus traffic of said predetermined data width;

a circuit for distinguishing a specific traffic within said bus traffic;

a processor for processing said reformatted bus traffic; and

a circuit for prioritizing said specific traffic over other traffic in said bus traffic.

10. The system of claim 9, further comprising a circuit for unpacking said bus traffic to said original data width.

11. The system of claim 9, wherein said circuit for prioritizing prioritizes a voice traffic over other traffic in said bus traffic.

12. The system of claim 9, wherein said circuit for prioritizing further comprises a queuing chip for queuing said bus traffic and a buffer for buffering said bus traffic.

13. The system of claim 9, wherein said processor comprises a circuit for header processing in accordance with at least one of Layer-2, Layer-3, and Layer-4.

14. The system of claim 9, wherein said system includes at least one interface for receiving and reformatting, said interface being selected from the group of interfaces consisting of:

POS-PHY interface, SPI interface, PCI interface, PCMCIA interface, USB interface and CARDBUS interface.

15. The system of claim 9, wherein said circuit for unpacking includes at least one interface selected from the group of interfaces consisting of:

POS-PHY interface, PCI interface, PCMCIA interface, USB interface and CARDBUS interface.

16. The system of claim 9, wherein said predetermined data width is 64 bits.

17. A device for secure frame transfer comprising:

a receiving circuit for receiving a frame; and

an ingress processor for processing said frame to decide whether or not to further process said frame.

18. The device of claim 17, further comprising a circuit for preprocessing said frame to examine the validity of a frame header of said frame by parsing said frame header.

19. The device of claim 17, wherein said ingress processor comprises a circuit for assigning an identifier for a selected frame.

20. The device of claim 19, wherein said identifier is a VLAN ID.

21. The device of claim 17, wherein said ingress processor comprises a circuit for setting a VLAN ID configured to VoiceVID and further setting X2 bit for said VoiceVID to avoid frame flooding.

22. The device of claim 17, wherein said ingress processor comprises a circuit for recording a MAC address of an authorized user into a register.

23. The device of claim 22, wherein said register is a hardware register.

24. The device of claim 17, wherein said ingress processor comprises a circuit for determining whether to forward said frame either as a Layer-2 or Layer-3 entity.

25. The device of claim 17, further comprising a Layer-2 processor for directing said ingress processed frame to a correct port.

26. The device of claim 17, further comprising a Layer-3 processor for directing said ingress processed frame to a correct port.

27. The device of claim 17, further comprising circuit for classifying said frame into a flow by matching header fields of said frame.

28. The device of claim 17, further comprising a next hop processor for determining said frame output and control frame header modification of said frame.

29. The device of claim 17, further comprising a multicast processor for outputting said frame.

30. An ethernet switching system for processing traffic, said switching system comprising:

a circuit for receiving and reformatting ethernet traffic having an original data width narrower than or equal to a predetermined data width into bus traffic of said predetermined data width;

a circuit for distinguishing a specific traffic within said bus traffic;

a processor for processing said reformatted bus traffic; and

a circuit for prioritizing said specific traffic over other traffic in said bus traffic.

31. An Internet Protocol telephony system comprising:

a data network;

an Internet Protocol (IP) telephone handset; and

a switch coupling said IP telephone handset to said data network, said switch including;

a first circuit for receiving traffic from at least one of said telephone handset and said data network, said traffic having an original data width narrower than or equal to a predetermined data width;

a second circuit for reformatting said received traffic into bus traffic of said predetermined data width;

a third circuit for distinguishing voice traffic from said IP telephone handset within said bus traffic;

a processor for processing said reformatted bus traffic; and

a fourth circuit for prioritizing voice traffic from said IP telephone handset over other traffic in said bus traffic.