System and Method for Scalable Flow Aware Network Architecture for Openflow Based Network Virtualization

• US 20120099591A1
• Filed: 10/26/2010
• Published: 04/26/2012
• Est. Priority Date: 10/26/2010
• Status: Abandoned Application

• Current Assignee: Dell Products LP (Dell Technologies Inc.)
• Original Assignee: Dell Products LP (Dell Technologies Inc.)
• Inventors: Kotha, Saikrishna, Chawla, Gaurav
• Application Number:
  US12/912,198
• Publication Number:
  US 20120099591A1
• Time in Patent Office: Days
• US Class Current: 370/392
• CPC Class Codes: H04L 41/0893 Assignment of logical groups to network elements
• CPC Class Codes: H04L 41/0894 Policy-based network configuration management
• CPC Class Codes: H04L 41/0895 Configuration of virtualised networks or elements, e.g. virtualised network function or OpenFlow elements
• CPC Class Codes: H04L 41/342 between virtual entities, e.g. orchestrators, SDN or NFV entities
• CPC Class Codes: H04L 45/54 Organization of routing tables

Abstract

A network device includes a memory configured to store a flow table, and a processor. The processor is configured to receiving a network packet, determine the network packet corresponds to an unidentified network flow, and provide flow information for the unidentified network flow to a controller. The processor is further configured to receive a flow identifier and an flow table entry from the controller. The flow table entry includes a flow rule and an encapsulate instruction. The processor is further configured to store the flow rule in the flow table, encapsulate the network packet using the flow identifier, and forward the encapsulated network packet to the network.

Claims

1. A network device comprising:

a memory configured to store a flow table; and

a processor configured to;

receive a network packet;

determine that the network packet corresponds to an unidentified network flow;

provide flow information for the unidentified network flow to a controller;

receive, from the controller, a flow identifier and a flow table entry, the flow table entry including a flow rule and an encapsulate instruction;

store the flow rule in the flow table;

encapsulate the network packet using the flow identifier; and

forward the encapsulated network packet to the network.

2. The network device of claim 1, wherein the flow identifier includes a controller-assigned media access control address, a controller-assigned Internet Protocol address, or any combination thereof.

3. The network device of claim 2, wherein the flow identifier includes the controller-assigned media access control address, and the processor is configured to encapsulate the network packet by adding a header including the controller-assigned media access control address to the network packet.

4. The network device of claim 1, wherein the processor is further configured to:

receive, from the controller, a second flow identifier and a second flow table entry, the second flow table entry including a second flow rule and a decapsulate instruction;

store the second flow rule in the flow table;

receive a second network packet matching the flow rule; and

decapsulate the second network packet.

5. The network device of claim 4, wherein the second flow identifier includes a second controller-assigned media access control address, and the processor is configured to decapsulate the second network packet by removing a header including the second controller-assigned media access control address from the second network packet.

6. The network device of claim 1, wherein the flow information includes the network packet, header information of the network packet, or any combination thereof.

7. A machine-executable method comprising:

receiving flow information corresponding to an unidentified network flow from a source network device;

creating a flow entry for the unidentified network flow, the flow entry corresponding to at least a portion of the flow information;

allocating a flow identifier for the unidentified network flow;

providing the flow identifier and a flow table entry to the source network device, the flow table entry including a flow rule and an encapsulate instruction; and

providing the flow identifier and a second flow table entry to a destination network device, the second flow table entry including a flow rule and a decapsulate instruction.

8. The method of claim 7, further comprising sending routing instructions corresponding to the flow identifier to a plurality of network switches.

9. The method of claim 7, wherein the flow identifier includes a controller-assigned media access control address, a controller-assigned Internet Protocol address, or any combination thereof.

10. The method of claim 7, wherein the flow information includes a network packet, header information of the network packet, or any combination thereof.

11. The method of claim 7, wherein the source network device includes a virtual switch, a converged network adapter, a edge router, or any combination thereof.

12. The method of claim 7, wherein the destination network device includes a virtual switch, a converged network adapter, a edge router, or any combination thereof.

13. Machine-executable code for an information handling system, wherein the machine-executable code is embedded within a non-transitory medium and includes instructions for carrying out a method, the method comprising:

receiving a network packet;

determining that the network packet corresponds to an unidentified network flow;

providing flow information for the unidentified network flow to a controller;

receiving, from the controller, a controller-assigned media access control address and a flow table entry, the flow table entry including a flow rule and an encapsulate instruction;

storing the flow rule in the flow table;

encapsulating the network packet to include the controller-assigned media access control address; and

forwarding the encapsulated network packet to the network.

14. The machine-executable code of claim 13, wherein encapsulating the network packet includes adding a header including the controller-assigned media access control address to the network packet.

15. The machine-executable code of claim 13, wherein the method further comprising:

receiving, from the controller, a second controller-assigned media access control address and a second flow table entry, the second flow table entry including a second flow rule and a decapsulate instruction;

storing the second flow rule in the flow table;

receiving a second network packet including the second controller-assigned media access control address and matching the second flow rule; and

decapsulating the second network packet.

16. The machine-executable code of claim 15, wherein decapsulating the second network packet includes removing a header including the second controller-assigned media access control address from the second network packet.

17. The machine-executable code of claim 13, wherein the flow information includes the network packet, header information of the network packet, or any combination thereof.