Flow processing migration

• US 10,390,290 B1
• Filed: 12/19/2016
• Issued: 08/20/2019
• Est. Priority Date: 12/19/2016
• Status: Active Grant

• Current Assignee: Juniper Networks Incorporated
• Original Assignee: Juniper Networks Incorporated
• Inventors: Zhang, Jing, Yuan, Zengqiang, Quan, Mingming, Sun, BinFang, Liang, Lei, Tian, Gaofeng, Yin, Huaxiang
• Primary Examiner(s): Mattis, Jason E
• Assistant Examiner(s): Shao, Hong
• Application Number:
  US15/383,116
• Time in Patent Office: 974 Days
• Field of Search: None
• CPC Class Codes: H04L 12/4633 Interconnection of networks using encapsulation techniques, e.g. tunneling
• CPC Class Codes: H04L 45/02 Topology update or discovery
• CPC Class Codes: H04L 45/54 Organization of routing tables
• CPC Class Codes: H04L 69/326 in the transport layer [OSI layer 4] H04L69/16 takes precedence
• CPC Class Codes: H04W 48/10 using broadcasted information
• CPC Class Codes: H04W 76/11 Allocation or use of connection identifiers
• CPC Class Codes: H04W 76/12 Setup of transport tunnels
• CPC Class Codes: H04W 88/16 Gateway arrangements

Abstract

A first processing device may receive, from a first network device, a tunneling protocol message associated with a tunnel to be established between the first network device and a second network device. The first processing device may determine, based on the tunneling protocol message, a device identifier of the second network device. The first processing device may determine that a second processing device is to process a flow associated with the first network device and the second network device based on the device identifier of the second network device. The first processing device may provide information that identifies that the second processing device is to process the flow to permit the second processing device to process the flow associated with the first network device and the second network device.

Claims

1. A first processing device, comprising:

one or more memories; and

one or more processors, communicatively coupled to the one or more memories, to;

receive, from a first network device, a tunneling protocol message associated with a tunnel to be established between the first network device and a second network device,

the tunnel to permit a user equipment to receive network traffic associated with a packet network;

determine, based on the tunneling protocol message, a device identifier of the second network device;

determine that a second processing device is to process a flow associated with the first network device and the second network device based on the device identifier of the second network device,

the first processing device having been previously identified to process the flow;

provide information that identifies that the second processing device is to process the flow to permit the second processing device to process the flow; and

provide, to a third processing device, an instruction that causes the third processing device to forward, to the first processing device, subsequent tunneling protocol messages associated with the flow,

wherein the one or more processors, when receiving, from the first network device, the tunneling protocol message, are to;

receive the tunneling protocol message based on the instruction.

2. The first processing device of claim 1, where the one or more processors are further to:

adjust the tunneling protocol message to include information that identifies that the second processing device is to process the flow;

provide, to a fourth processing device, the tunneling protocol message after adjusting the tunneling protocol message; and

where the one or more processors, when providing the information that identifies that the second processing device is to process the flow, are to;

provide the information that identifies that the second processing device is to process the flow based on providing the tunneling protocol message.

3. The first processing device of claim 1, where the one or more processors are further to:

adjust the tunneling protocol message to include information that identifies that the second processing device is to process the flow;

provide, to the second processing device, the tunneling protocol message after adjusting the tunneling protocol message; and

where the one or more processors, when providing the information that identifies that the second processing device is to process the flow, are to;

provide the information that identifies that the second processing device is to process the flow based on providing the tunneling protocol message.

4. The first processing device of claim 1, where the one or more processors are further to:

remove, from a table of the first processing device, an entry for the flow based on providing the information that identifies that the second processing device is to process the flow.

5. The first processing device of claim 1, where the one or more processors are further to:

receive, from a fourth processing device, a general packet radio service tunneling protocol (GTP)-C ECHO message.

6. The first processing device of claim 1, where the one or more processors are further to:

identify a type of the tunneling protocol message; and

where the one or more processors, when determining, based on the tunneling protocol message, the device identifier of the second network device, are to;

determine the device identifier based on the type of the tunneling protocol message.

7. The first processing device of claim 1, where the first network device is a serving general packet radio service (GPRS) support node and where the second network device is a gateway GPRS support node.

8. A non-transitory computer-readable medium storing instructions, the instructions comprising:

one or more instructions that, when executed by one or more processors of a first device, cause the one or more processors to;

receive, from a first network device, a tunneling protocol message associated with a tunnel to be established between the first network device and a second network device,

the tunnel to permit a user equipment to access a packet network;

determine, based on the tunneling protocol message, a device identifier of the second network device;

determine that a second device is to process a flow associated with the first network device and the second network device based on the device identifier of the second network device,

the first device having been previously identified to process the flow; and

provide information that identifies that the second device is to process subsequent tunneling protocol messages associated with the flow,

where providing the information that identifies that the second device is to process the subsequent tunneling protocol messages comprises;

providing the information that identifies that the second device is to process the subsequent tunneling protocol messages based on providing the tunneling protocol message.

9. The non-transitory computer-readable medium of claim 8, where the one or more instructions, when executed by the one or more processors, further cause the one or more processors to:

adjust the tunneling protocol message to include the information that identifies that the second device is to process the flow; and

provide, to a third device, the tunneling protocol message based on adjusting the tunneling protocol message.

10. The non-transitory computer-readable medium of claim 8, where the one or more instructions, when executed by the one or more processors, further cause the one or more processors to:

provide, to the second device, the tunneling protocol message.

11. The non-transitory computer-readable medium of claim 8, where the one or more instructions, when executed by the one or more processors, further cause the one or more processors to:

cause an entry, stored by the first device, to be updated to identify the second device rather than the first device after determining that the second device is to process the flow.

12. The non-transitory computer-readable medium of claim 8, where the one or more instructions, when executed by the one or more processors, further cause the one or more processors to:

identify a direction of the tunneling protocol message; and

where the one or more instructions, that cause the one or more processors to determine the device identifier of the second network device, cause the one or more processors to;

determine the device identifier of the second device based on the direction of the tunneling protocol message.

13. The non-transitory computer-readable medium of claim 8, where the tunneling protocol message requests the second network device to establish the tunnel with the first network device.

14. The non-transitory computer-readable medium of claim 8, where the one or more instructions, when executed by the one or more processors, further cause the one or more processors to:

store information that maps the device identifier of the second network device to the second device; and

where the one or more instructions, that cause the one or more processors to determine that the second device is to process the flow, cause the one or more processors to;

determine that the second device is to process the flow based on the information that maps the device identifier of the second network device to the second device.

15. A method, comprising:

receiving, by a first device, a tunneling protocol message associated with a tunnel associated with a first network device and a second network device,

the tunnel to permit a user equipment to access a network;

determining, by the first device, a direction or a type of the tunneling protocol message;

determining, by the first device, a device identifier of the second network device based on the direction or the type of the tunneling protocol message;

determining, by the first device and based on the device identifier of the second network device, that a second device is to process a flow between the first network device and the second network device,

the first device having been previously identified to process the flow; and

providing, by the first device, information that identifies that the second device is to process subsequent tunneling protocol messages associated with the flow,

where providing the information that identifies that the second device is to process the subsequent tunneling protocol messages comprises;

providing the information that identifies that the second device is to process the subsequent tunneling protocol messages based on providing the tunneling protocol message.

16. The method of claim 15, further comprising:

receiving, from a third device, a general packet radio service tunneling protocol (GTP)-C ECHO message;

storing, in a table of the first device, an entry for the flow based on the GTP-C ECHO message; and

where receiving the tunneling protocol message comprises;

receiving the tunneling protocol message based on the entry for the flow.

17. The method of claim 15, further comprising:

providing, to a third device, the tunneling protocol message including information that identifies that the second device is to process the flow.

18. The method of claim 15, further comprising:

providing, to the second device, the tunneling protocol message including the information that identifies that the second device is to process the flow.

19. The method of claim 15, further comprising:

identifying the type of the tunneling protocol message; and

where determining the device identifier of the second device comprises;

determining the device identifier of the second device based on the type.

20. The method of claim 15, further comprising:

identifying the direction of the tunneling protocol message; and

where determining the device identifier of the second device comprises;

determining the device identifier of the second device based on the direction.