System and method for utilization of a segmentation identification to support transmission of data to a destination node

• US 9,264,351 B2
• Filed: 09/07/2013
• Issued: 02/16/2016
• Est. Priority Date: 09/07/2013
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: de Silva, Suran Saminda, Tsai, Chiajen, Dong, Liqin, Yang, Yibin
• Primary Examiner(s): NGUYEN, MINH TRANG T
• Application Number:
  US14/020,791
• Publication Number:
  US 20150071286A1
• Time in Patent Office: 892 Days
• Field of Search: None
• US Class Current: 1/1
• 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 45/54 Organization of routing tables
• CPC Class Codes: H04L 45/586 of virtual routers
• CPC Class Codes: H04L 45/74 Address processing for routing

Abstract

A method is provided in one example and includes receiving, at a receiving node, a packet that comprises information indicative of an internet protocol address and a segmentation identification, selecting a virtual routing and forwarding table corresponding with the segmentation identification, identifying a destination node based, at least in part, on the internet protocol address and the virtual routing and forwarding table, and transmitting the packet to the destination node.

Claims

1. An apparatus, comprising:

at least one processor;

at least one memory including computer program code, the memory and the computer program code configured to, working with the processor, cause the apparatus to perform at least the following;

receive, at the apparatus, a packet that comprises information indicative of an internet protocol address and a segmentation identification;

select a virtual routing and forwarding table corresponding with the segmentation identification;

identify a destination node based, at least in part, on the internet protocol address and the virtual routing and forwarding table; and

transmit the packet to the destination node.

2. The apparatus of claim 1, wherein the segmentation identification relates to a virtual local area network designation associated with the destination node.

3. The apparatus of claim 1, wherein the segmentation identification relates to at least one header field of the packet.

4. The apparatus of claim 1, wherein the segmentation identification comprises a first segmentation identification part identified by a first header field of the packet and a second segmentation identification part identified by a second header field of the packet.

5. The apparatus of claim 1, wherein the selection of a virtual routing and forwarding table is based, at least in part, on correlation between the segmentation identification and the virtual routing and forwarding table.

6. The apparatus of claim 5, wherein the correlation between the segmentation identification and the virtual routing and forwarding table is based, at least in part, on identification of an entry in a segmentation identification correlation table such that the entry designates the virtual routing and forwarding table.

7. The apparatus of claim 1, wherein the identification of the destination node is based, at least in part, on correlation between the internet protocol address and information indicative of an address of the destination node.

8. The apparatus of claim 7, wherein the information indicative of the address of the destination node relates to a port number of the apparatus that is associated with the destination node.

9. The apparatus of claim 1, wherein the memory further includes computer program instructions that, when executed by the at least one processor, cause the apparatus to perform:

receipt of a different packet that comprises information indicative of the internet protocol address and a different segmentation identification;

selection of a different virtual routing and forwarding table corresponding with the different segmentation identification;

identification of a different destination node based, at least in part, on the internet protocol address and the different virtual routing and forwarding table; and

transmission of the different packet to the different destination node.

10. A method, comprising:

receiving, at a receiving node, a packet that comprises information indicative of an internet protocol address and a segmentation identification;

selecting a virtual routing and forwarding table corresponding with the segmentation identification;

identifying a destination node based, at least in part, on the internet protocol address and the virtual routing and forwarding table; and

transmitting the packet to the destination node.

11. The method of claim 10, wherein the segmentation identification relates to a virtual local area network designation associated with the destination node.

12. The method of claim 10, wherein the segmentation identification relates to at least one header field of the packet.

13. The method of claim 10, wherein the selection of a virtual routing and forwarding table is based, at least in part, on correlation between the segmentation identification and the virtual routing and forwarding table.

14. The method of claim 13, wherein the correlation between the segmentation identification and the virtual routing and forwarding table is based, at least in part, on identification of an entry in a segmentation identification correlation table such that the entry designates the virtual routing and forwarding table.

15. The method of claim 10, wherein the identification of the destination node is based, at least in part, on correlation between the internet protocol address and information indicative of an address of the destination node.

16. The method of claim 10, further comprising:

receiving a different packet that comprises information indicative of the internet protocol address and a different segmentation identification;

selecting a different virtual routing and forwarding table corresponding with the different segmentation identification;

identifying a different destination node based, at least in part, on the internet protocol address and the different virtual routing and forwarding table; and

transmitting the different packet to the different destination node.

17. At least one non-transitory computer-readable medium encoded with instructions that, when executed by a processor, perform:

receiving, at a receiving node, a packet that comprises information indicative of an internet protocol address and a segmentation identification;

selecting a virtual routing and forwarding table corresponding with the segmentation identification;

identifying a destination node based, at least in part, on the internet protocol address and the virtual routing and forwarding table; and

transmitting the packet to the destination node.

18. The non-transitory computer-readable medium of claim 17, wherein the segmentation identification relates to at least one header field of the packet.

19. The non-transitory computer-readable medium of claim 17, wherein the selection of a virtual routing and forwarding table is based, at least in part, on correlation between the segmentation identification and the virtual routing and forwarding table.

20. The non-transitory computer-readable medium of claim 17, encoded with instructions that, when executed by a processor, perform:

receiving a different packet that comprises information indicative of the internet protocol address and a different segmentation identification;

selecting a different virtual routing and forwarding table corresponding with the different segmentation identification;

identifying a different destination node based, at least in part, on the internet protocol address and the different virtual routing and forwarding table; and

transmitting the different packet to the different destination node.