Network packet steering via configurable association of packet processing resources and network interfaces

• US 9,215,178 B2
• Filed: 12/02/2013
• Issued: 12/15/2015
• Est. Priority Date: 06/04/2002
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Desai, Sachin, Millet, Tim, Hussain, Zahid, Kim, Paul, Yeung, Louise, Yeung, Ken
• Primary Examiner(s): Morlan, Robert M
• Application Number:
  US14/094,059
• Publication Number:
  US 20140161136A1
• Time in Patent Office: 743 Days
• Field of Search: 370/392, 370/400
• US Class Current: 1/1
• CPC Class Codes: H04L 12/4625 Single bridge functionality, e.g. connection of two networks over a single bridge
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/22 Traffic shaping
• CPC Class Codes: H04L 47/2441 relying on flow classification, e.g. using integrated services [IntServ]
• CPC Class Codes: H04L 47/2491 Mapping quality of service [QoS] requirements between different networks
• CPC Class Codes: H04L 49/254 Centralised controller, i.e. arbitration or scheduling
• CPC Class Codes: H04L 49/30 Peripheral units, e.g. input or output ports
• CPC Class Codes: H04L 49/65 Re-configuration of fast packet switches

Abstract

Methods and systems are provided for steering network packets. According to one embodiment, a dynamically configurable steering table is stored within a memory of each network interface of a networking routing/switching device. The steering table represents a mapping that logically assigns each of the network interfaces to one of multiple packet processing resources of the network routing/switching device. The steering table has contained therein information indicative of a unique identifier/address of the assigned packet processing resource. Responsive to receiving a packet on a network interface, the network interface performs Layer 1 or Layer 2 steering of the received packet to the assigned packet processing resource by retrieving the information indicative of the unique identifier/address of the assigned packet processing resource from the steering table based on a channel identifier associated with the received packet and the received packet is processed by the assigned packet processing resource.

Claims

1. A method comprising:

providing a user interface to dynamically configure one or more packet processing resources, wherein the user interface is in communication with each packet processing resource of a plurality of packet processing resources of a network routing/switching device;

displaying at least one of processing capabilities or memory capabilities of the one or more packet processing resources to the user via the user interface, wherein the at least one of the processing capabilities or the memory capabilities is displayed in response to communications sent to the user interface from the at least one packet processing resource;

generating with the user interface, a mapping that logically assigns each packet processing resource to one or more network interfaces or to one or more line interface ports associated with one or more network interfaces, wherein the one or more network interfaces or the one or more line interface ports steer, based on the mapping, a received network packet to a particular packet processing resource by which the received packet is to be processed;

sending data describing the mapping to each packet processing resource; and

causing the data describing the mapping to be forwarded from each packet processing resource to the assigned one or more network interfaces or the one or more line interface ports.

2. The method of claim 1, further comprising assigning, by the user interface, a unique identifier to each packet processing resource, wherein the unique identifier is used to distinguish each packet processing resource from the plurality of packet processing resources, and wherein the unique identifier is used during the process of mapping each packet processing resource to one or more network interfaces or to one or more line interface ports.

3. The method of claim 1, wherein providing further comprises providing a user interface that allows an end user to visualize each network interface of a plurality of network interfaces and each line interface port of a plurality of line interface ports in order to generate the mapping that logically assigns each packet processing resource to one or more network interfaces or to one or more line interface ports.

4. The method of claim 3, wherein providing further comprises providing a user interface that allows the end user to visually inspect processing and memory capabilities of each packet processing resource of a plurality of packet processing resources in order to generate the mapping that logically assigns each packet processing resource to one or more network interfaces or to one or more line interface ports.

5. The method of claim 4, wherein providing further comprises providing a user interface that allows the end user to dynamically alter the mapping based upon observed traffic patterns of the network device.

6. The method of claim 1, wherein sending further comprises sending the data describing the mapping to each packet processing resource of the plurality of packet processing resources, wherein the data describing the mapping is stored in memory of each packet processing resource as a table data structure.

7. The method of claim 6, wherein sending further comprises sending a steering table to each packet processing resource of the plurality of packet processing resources, wherein the data describing the mapping, stored in memory of each packet processing resource as a steering table, is utilized to perform filtering operations on the received data packet.

8. The method of claim 1, wherein providing a user interface further comprises providing a Graphical User Interface (GUI) or a command line interface.

9. An apparatus comprising:

a network interface unit comprising one or more network interfaces or one or more line interface ports associated with one or more network interfaces and configured to receive communications over a network;

a user interface to dynamically configure one or more packet processing resources; and

a processor coupled to the network interface unit, the user interface, and a memory and configured to;

display, using the user interface, at least one of processing capabilities or memory capabilities of the one or more packet processing resources, wherein the at least one of the processing capabilities or the memory capabilities is displayed in response to communications sent to the user interface from the at least one packet processing resource;

generate, using the user interface, a mapping that logically assigns each packet processing resource to the one or more network interfaces or to the one or more line interface ports associated with one or more network interfaces, wherein the one or more network interfaces or the one or more line interface ports steer, based on the mapping, a received network packet to a particular packet processing resource by which the received packet is to be processed;

send data describing the mapping to each packet processing resource; and

cause the data describing the mapping to be forwarded from each packet processing resource to the assigned one or more network interfaces or the one or more line interface ports.

10. The apparatus of claim 9, wherein the processor is further configured to:

assign, using the user interface, a unique identifier to each packet processing resource, wherein the unique identifier is used to distinguish each packet processing resource from the plurality of packet processing resources, and wherein the unique identifier is used during the process of mapping each packet processing resource to one or more network interfaces or to one or more line interface ports.

11. The apparatus of claim 9, wherein the processor is further configured to:

allow, using the user interface, an end user to visualize each network interface of a plurality of network interfaces and each line interface port of a plurality of line interface ports in order to generate the mapping that logically assigns each packet processing resource to one or more network interfaces or to one or more line interface ports.

12. The apparatus of claim 11, wherein the processor is further configured to:

allow the end user to visually inspect processing and memory capabilities, using the user interface, of each packet processing resource of a plurality of packet processing resources in order to generate the mapping that logically assigns each packet processing resource to one or more network interfaces or to one or more line interface ports.

13. The apparatus of claim 12, wherein the processor is further configured to:

allow the end user to dynamically alter the mapping, using the user interface, based upon observed traffic patterns of the network device.

14. The apparatus of claim 9, wherein the processor is further configured to:

send the data describing the mapping to each packet processing resource of the plurality of packet processing resources, wherein the data describing the mapping is stored in memory of each packet processing resource as a steering table data structure.

15. One or more non-transitory computer readable storage media encoded with software comprising computer executable instructions and when the software is executed operable to:

provide a user interface to dynamically configure one or more packet processing resources, wherein the user interface is in communication with each packet processing resource of a plurality of packet processing resources of a network routing/switching device;

display, using the user interface, at least one of processing capabilities or memory capabilities of the one or more packet processing resources, wherein the at least one of the processing capabilities or the memory capabilities is displayed in response to communications sent to the user interface from the at least one packet processing resource;

generate with the user interface, a mapping that logically assigns each packet processing resource to one or more network interfaces or to one or more line interface ports associated with one or more network interfaces, wherein the one or more network interfaces or the one or more line interface ports steer, based on the mapping, a received network packet to a particular packet processing resource by which the received packet is to be processed;

send data describing the mapping to each packet processing resource; and

cause the data describing the mapping to be forwarded each packet processing resource to the assigned one or more network interfaces or the one or more line interface ports.

16. The computer readable storage media of claim 15, further comprising computer executable instructions operable to:

assign, by the user interface, a unique identifier to each packet processing resource, wherein the unique identifier is used to distinguish each packet processing resource from the plurality of packet processing resources, and wherein the unique identifier is used during the process of mapping each packet processing resource to one or more network interfaces or to one or more line interface ports.

17. The computer readable storage media of claim 15, further comprising computer executable instructions operable to:

provide a user interface that allows an end user to visualize each network interface of a plurality of network interfaces and each line interface port of a plurality of line interface ports in order to generate the mapping that logically assigns each packet processing resource to one or more network interfaces or to one or more line interface ports.

18. The computer readable storage media of claim 17, further comprising computer executable instructions operable to:

provide a user interface that allows the end user to visually inspect processing and memory capabilities of each packet processing resource of a plurality of packet processing resources in order to generate the mapping that logically assigns each packet processing resource to one or more network interfaces or to one or more line interface ports.

19. The computer readable storage media of claim 18, further comprising computer executable instructions operable to:

provide a user interface that allows the end user to dynamically alter the mapping based upon observed traffic patterns of the network device.

20. The computer readable storage media of claim 15, further comprising computer executable instructions operable to:

send the data describing the mapping to each packet processing resource of the plurality of packet processing resources, wherein the data describing the mapping is stored in memory of each packet processing resource as a steering table data structure.