Conduit port for network chips

• US 7,894,426 B2
• Filed: 02/04/2005
• Issued: 02/22/2011
• Est. Priority Date: 02/04/2005
• Status: Active Grant

• Current Assignee: Hewlett Packard Enterprise Development LP (Hewlett-Packard Enterprise Company)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Kootstra, Lewis S., Watts, Jonathan M., LaVigne, Bruce E., Wickeraad, John A.
• Primary Examiner(s): Yao; Kwang B
• Assistant Examiner(s): Rutkowski; Jeffrey M
• Application Number:
  US11/051,422
• Publication Number:
  US 20060187913A1
• Time in Patent Office: 2,209 Days
• Field of Search: 370/394, 370/535, 370/389, 370/250, 370/402, 370/357, 370386-388, 370/390, 709/252, 709/213, 709/238, 710/100, 710316-317
• US Class Current: 370/386
• CPC Class Codes: H04L 12/56 Packet switching systems

Abstract

Network devices and methods are provided for device monitoring. One embodiment includes a network device having a processor, a high speed interconnect and a number of network chips. The number of network chips are coupled to one another through the high speed interconnect. The number of network chips have a conduit port which can be selectively chosen to exchange packets, received to any network chip, with the processor.

Claims

1. A network device, comprising:

a number of network chips coupled to one another through a high speed interconnect on the device;

a number of processors; and

an independent multiplexor and buffer pair associated with each of the number of processors respectively;

wherein the number of processors are responsible for processing packets, received to any network chip on the device, wherein each of the number of network chips has a number of external ports and additionally a designated conduit port to exchange packets with the number of processors, and wherein each processor includes a single conduit port to exchange packets with the number of network chips through the respective independent multiplexor and buffer pair;

wherein a respective multiplexor of the pair is configured for selecting the designated conduit port on one of the number of network chips to exchange packets with a respective processor; and

wherein each respective buffer of the pair is configured to broadcast an output from the single conduit port on the respective processor to an input side of each of the conduit ports on the number of network chips.

2. The network device of claim 1, wherein the selected conduit port sends packets to an input side of the single conduit port of the respective processor, and an output side of the single conduit port of the respective processor is broadcast through the respective buffer to an input side of the conduit ports.

3. The network device of claim 1, wherein the number of processors are separate from the high speed interconnect.

4. The network device of claim 1, wherein each of the conduit ports is an IEEE 802.3 media access control (MAC) port.

5. The network device of claim 1, wherein the device is selected from the group of a network switch and a network router.

6. The network device of claim 1, wherein the device is part of a local area network (LAN).

7. The network device of claim 1, wherein the number of network chips include hardware filtering logic such that certain network chips can operate on packets to send to a local processor and other packets will be operated on by only a particular network chip to be sent out one of the external ports.

8. The network device of claim 1, wherein the multiplexor in each pair is to select the conduit port on one of the number of network chips to exchange packets with the single conduit port on a selected processor.

9. The network device of claim 8, wherein the buffer in each pair is to broadcast an output from the single conduit port on the processors to a number of multiplexors, each of the number of multiplexors to select an input side of the conduit port on a particular network chip.

10. A method for moving packets on a network device, comprising:

using a number of network chips coupled to one another through a high speed interconnect of the device, the number of network chips each having a number of external ports, and additionally a designated conduit port to exchange packets received to the number of external ports, with a number of processors;

processing packets received to any network chip on the device with at least one of the number of processors;

exchanging packets with the number of network chips via a single conduit port on each of the number of processors and through an independent multiplexor and butler pair associated with each of the number of processors respectively;

selecting the designated conduit port on one of the number of network chips with a respective multiplexor of the pair to exchange packets with a respective processor; and

broadcasting an output from the single conduit port on the respective processor to an input side of each of the conduit ports on the number of network chips with the respective buffer of the pair.

11. The method of claim 10, wherein the method includes receiving packets to an external port of any network chip on the device and forwarding the packets to the selected conduit port via the high speed interconnect.

12. The method of claim 10, wherein the method includes broadcasting an output of the single conduit port on the respective processor through the respective buffer of the pair to an input side of a subset of the conduit ports on the number of network chips.

13. The method of claim 12, wherein the method includes providing hardware filtering logic on each of the number of network chips such that each network chip can operate on packets received from the single conduit port of the respective processor.

14. The method of claim 12, wherein the method includes forwarding the output broadcast to the subset of the conduit ports to an external port.

15. The method of claim 12, wherein the method includes forwarding the output broadcast to the subset of the conduit ports to local processing on a current or on another network chip via the high speed interconnect.