Application layer network traffic prioritization

• US 9,143,451 B2
• Filed: 01/25/2013
• Issued: 09/22/2015
• Est. Priority Date: 10/01/2007
• Status: Active Grant

• Current Assignee: F5 Networks, Inc. (F5 Incorporated)
• Original Assignee: F5 Networks, Inc. (F5 Incorporated)
• Inventors: Amdahl, Saxon, Lennie, Robert, Larson, Richard
• Primary Examiner(s): Yao, Kwang B
• Assistant Examiner(s): DUDA, ADAM K
• Application Number:
  US13/750,188
• Publication Number:
  US 20130212295A1
• Time in Patent Office: 970 Days
• Field of Search: 370229-240, 370/351, 370/352, 370/360, 370/389, 370/395.42, 709/227, 709/228, 709/238, 709/240, 709/242
• US Class Current: 1/1
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/193 at the transport layer, e.g. TCP related
• 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 67/61 taking into account QoS or priority requirements
• CPC Class Codes: H04L 69/161 Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields
• CPC Class Codes: H04L 69/32 Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
• CPC Class Codes: H04L 69/322 Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions

Abstract

Layer-7 application layer message (“message”) classification is disclosed. A network traffic management device (“NTMD”) receives incoming messages over a first TCP/IP connection from a first network for transmission to a second network. Before transmitting the incoming messages onto the second network, however, the NTMD classifies the incoming messages according to some criteria, such as by assigning one or more priorities to the messages. The NTMD transmits the classified messages in the order of their message classification. Where the classification is priority based, first priority messages are transmitted over second priority messages, and so forth, for example.

Claims

1. A network traffic management device comprising:

a memory capable of storing computer-executable instructions;

a transceiver capable of sending or receiving data packets over a network from or to at least a second network device; and

a processor capable of executing the stored computer-executable instructions to perform actions, in cooperation with the transceiver, the actions comprising;

receiving a plurality of un-prioritized application layer messages; and

classifying at least one of the un-prioritized application layer messages as having a first priority of transmission to the second network device and at least another one of the un-prioritized application layer messages as having a second priority of transmission to the second network device, the second priority application layer message having a higher transmission priority than the first priority application layer message, wherein the classification is based on one or more application layer characteristics of a respective plurality of data packets that together comprise each of the classified application layer messages and is independent of any network layer information, wherein one or more of the un-prioritized application layer messages comprise a plurality of network layer data packets having a same priority.

2. The device of claim 1, wherein one or more of the plurality of data packets of one or more of the first or second priority application layer messages are prioritized differently than the first or second priority of transmission of a corresponding one of the first or second priority application layer messages.

3. The device of claim 1, wherein the actions further include:

transmitting a subset of the plurality of data packets that together comprise the first priority application layer message;

detecting the second priority application layer message;

transmitting the second priority application layer message; and

completing transmission of the first priority application layer message after the transmission of the second priority application layer message.

4. A network traffic management device comprising:

a memory capable of storing computer-executable instructions;

a transceiver capable of sending or receiving data packets over a network from or to at least a second network device; and

a processor capable of executing the stored computer-executable instructions to perform actions, in cooperation with the transceiver, the actions comprising;

receiving a plurality of un-prioritized application layer messages; and

classifying at least one of the un-prioritized application layer messages as having a first priority of transmission to the second network device and at least another one of the un-prioritized application layer messages as having a second priority of transmission to the second network device, the second priority application layer message having a higher transmission priority than the first priority application layer message, wherein the classification is based on one or more application layer characteristics of a respective plurality of data packets that together comprise each of the classified application layer messages and is independent of any network layer information, wherein one or more of the un-prioritized application layer messages comprise one or more network layer data packets having a different priority than one or more other network layer data packets of the one or more of the un-prioritized application layer messages.

5. The device of claim 4, wherein one or more of the plurality of data packets of one or more of the first or second priority application layer messages are prioritized differently than the first or second priority of transmission of a corresponding one of the first or second priority application layer messages.

6. The device of claim 4, wherein the actions further include:

transmitting a subset of the plurality of data packets that together comprise the first priority application layer message;

detecting the second priority application layer message;

transmitting the second priority application layer message; and

completing transmission of the first priority application layer message after the transmission of the second priority application layer message.

7. A method for prioritizing network traffic, the method comprising:

receiving, by a network traffic management device, a plurality of un-prioritized application layer messages; and

classifying, by the network traffic management device, at least one of the un-prioritized application layer messages as having a first priority of transmission to the second network device and at least another one of the un-prioritized application layer messages as having a second priority of transmission to the second network device, the second priority application layer message having a higher transmission priority than the first priority application layer message, wherein the classification is based on one or more application layer characteristics of a respective plurality of data packets that together comprise each of the classified application layer messages and is independent of any network layer information, wherein one or more of the un-prioritized application layer messages comprise a plurality of network layer data packets having a same priority.

8. The method of claim 7, wherein one or more of the plurality of data packets of one or more of the first or second priority application layer messages are prioritized differently than the first or second priority of transmission of a corresponding one of the first or second priority application layer messages.

9. The method of claim 7, further comprising:

transmitting, with the network traffic management device, a subset of the plurality of data packets that together comprise the first priority application layer message;

detecting, with the network traffic management device, the second priority application layer message;

transmitting, with the network traffic management device, the second priority application layer message; and

completing, with the network traffic management device, transmission of the first priority application layer message after the transmission of the second priority application layer message.

10. A method for prioritizing network traffic, the method comprising:

receiving, by a network traffic management device, a plurality of un-prioritized application layer messages; and

classifying, by the network traffic management device, at least one of the un-prioritized application layer messages as having a first priority of transmission to the second network device and at least another one of the un-prioritized application layer messages as having a second priority of transmission to the second network device, the second priority application layer message having a higher transmission priority than the first priority application layer message, wherein the classification is based on one or more application layer characteristics of a respective plurality of data packets that together comprise each of the classified application layer messages and is independent of any network layer information, wherein one or more of the un-prioritized application layer messages comprise one or more network layer data packets having a different priority than one or more other network layer data packets of the one or more of the un-prioritized application layer messages.

11. The method of claim 10, wherein one or more of the plurality of data packets of one or more of the first or second priority application layer messages are prioritized differently than the first or second priority of transmission of a corresponding one of the first or second priority application layer messages.

12. The method of claim 10, further comprising:

transmitting, by the network traffic management device, a subset of the plurality of data packets that together comprise the first priority application layer message;

detecting, by the network traffic management device, the second priority application layer message;

transmitting, by the network traffic management device, the second priority application layer message; and

completing, by the network traffic management device, transmission of the first priority application layer message after the transmission of the second priority application layer message.

13. A non-transitory computer readable medium having stored thereon instructions for prioritizing network traffic comprising machine executable code which when executed by a processor, causes the processor to perform steps comprising:

receiving a plurality of un-prioritized application layer messages; and

classifying at least one of the un-prioritized application layer messages as having a first priority of transmission to the second network device and at least another one of the un-prioritized application layer messages as having a second priority of transmission to the second network device, the second priority application layer message having a higher transmission priority than the first priority application layer message, wherein the classification is based on one or more application layer characteristics of a respective plurality of data packets that together comprise each of the classified application layer messages and is independent of any network layer information, wherein one or more of the un-prioritized application layer messages comprise a plurality of network layer data packets having a same priority.

14. The medium of claim 13, wherein one or more of the plurality of data packets of one or more of the first or second priority application layer messages are prioritized differently than the first or second priority of transmission of a corresponding one of the first or second priority application layer messages.

15. The medium of claim 13, wherein the machine executable code when executed by the processor further causes the processor to perform steps further comprising:

transmitting a subset of the plurality of data packets that together comprise the first priority application layer message;

detecting the second priority application layer message;

transmitting the second priority application layer message; and

completing transmission of the first priority application layer message after the transmission of the second priority application layer message.

16. A non-transitory computer readable medium having stored thereon instructions for prioritizing network traffic comprising machine executable code which when executed by a processor, causes the processor to perform steps comprising:

receiving a plurality of un-prioritized application layer messages; and

classifying at least one of the un-prioritized application layer messages as having a first priority of transmission to the second network device and at least another one of the un-prioritized application layer messages as having a second priority of transmission to the second network device, the second priority application layer message having a higher transmission priority than the first priority application layer message, wherein the classification is based on one or more application layer characteristics of a respective plurality of data packets that together comprise each of the classified application layer messages and is independent of any network layer information, wherein one or more of the un-prioritized application layer messages comprise one or more network layer data packets having a different priority than one or more other network layer data packets of the one or more of the un-prioritized application layer messages.

17. The medium of claim 16, wherein one or more of the plurality of data packets of one or more of the first or second priority application layer messages are prioritized differently than the first or second priority of transmission of a corresponding one of the first or second priority application layer messages.

18. The medium of claim 16, wherein the machine executable code when executed by the processor further causes the processor to perform steps further comprising:

transmitting a subset of the plurality of data packets that together comprise the first priority application layer message;

detecting the second priority application layer message;

transmitting the second priority application layer message; and

completing transmission of the first priority application layer message after the transmission of the second priority application layer message.