Processing data packets in performance enhancing proxy (PEP) environment

• US 9,906,630 B2
• Filed: 07/28/2015
• Issued: 02/27/2018
• Est. Priority Date: 10/14/2011
• Status: Active Grant

• Current Assignee: Hewlett Packard Enterprise Development LP (Hewlett-Packard Enterprise Company)
• Original Assignee: Silver Peak Systems Incorporated (Hewlett-Packard Enterprise Company)
• Inventors: Hughes, David Anthony
• Primary Examiner(s): Aung, Sai
• Application Number:
  US14/811,482
• Publication Number:
  US 20150334210A1
• Time in Patent Office: 945 Days
• CPC Class Codes: H04L 63/0428 wherein the data content is protected, e.g. by encrypting or encapsulating the payload
• CPC Class Codes: H04L 69/04 Protocols for data compression, e.g. ROHC
• CPC Class Codes: H04L 69/16 Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers
• 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 69/326 in the transport layer [OSI layer 4] H04L69/16 takes precedence

Abstract

Methods and systems for processing network packets within a Performance Enhancing Proxy (PEP) environment are described. An example method comprises receiving network data to be transported between a first PEP and a second PEP. The network data is segmented in one or more original network packets. The method may further comprise collecting packet identifying data associated with the one or more original network packets before the network data is packetized into one or more performance enhanced packets by the first PEP. The method may further comprise transmitting the identifying data to the second PEP. Upon receiving of the identifying data, the second PEP may recreate the segmentation of the original network data.

Claims

1. A computer-implemented method for processing network packets, the method comprising:

receiving network data to be transported between a first Performance Enhancing Proxy (PEP) and a second PEP, the network data being segmented in two or more original network data packets;

removing a header from each of the two or more original network data packets;

collecting packet identifying data associated with the two or more original network packets from the removed header before the network data is packetized into one or more performance enhanced packets by the first PEP, the packet identifying data comprising information regarding the segmentation of the network data into the two or more original network data packets;

transmitting the one or more performance enhanced packets from the first PEP to the second PEP;

transmitting the packet identifying data to the second PEP; and

recreating by the second PEP the original packet segmentation of the network data upon receiving the packet identifying data and the performance enhanced packets from the first PEP, wherein the recreating comprises retrieving information about each length of the two or more original network data packets from the packet identifying data.

2. The method of claim 1, wherein the recreating by the second PEP the original packet segmentation of the network data further comprises:

extracting data segments in the two or more original network data packets exactly as they were received in the first PEP; and

generating a new header that is the same as the removed header for each of the extracted data segments, such that new data packets are regenerated that are identical to the two or more original network data packets.

3. The method of claim 1, wherein the packet identifying data includes one or more of the following:

lengths, length deltas, Differentiated Services Code Point (DSCP) markings, priority markings, and options.

4. The method of claim 1, wherein the two or more original network data packets are complying with a Transmission Control Protocol (TCP).

5. The method of claim 1, wherein the packet identifying data is transmitted to the second PEP with the performance enhanced packets.

6. The method of claim 1, wherein the received network data to be transmitted between the first PEP and the second PEP is compressed or encrypted.

7. The method of claim 1, wherein the first PEP compresses or encrypts the network data before transmitting to the second PEP.

8. The method of claim 1, wherein the packet identifying data is transmitted to the second PEP separately from the performance enhanced packets.

9. The method of claim 1, wherein the packet identifying data is descriptive of lengths of the two or more original network data packets.

10. The method of claim 7, wherein the packet identifying data is inserted into the network data after the network data is compressed and before the network data is encrypted.

11. A system for processing network packets, the system comprising:

a first module, stored in memory and executed by at least one processor, that receives network data to be transported between a first Performance Enhancing Proxy (PEP) and a second PEP, the network data being segmented into two or more original network data packets;

a second module, stored in memory and executed by the at least one processor, that removes a header from each of the two or more original network data packets and collects packet identifying data associated with the two or more original network data packets from the removed header before the network data is packetized into one or more performance enhanced packets by the first PEP, the packet identifying data comprising data regarding the segmentation of the network data into the two or more original network data packets;

a third module, stored in memory and executed by the at least one processor, that transmits the packet identifying data to the second PEP and transmits the one or more performance enhanced packets to the second PEP; and

a fourth module, stored in memory and executed by the at least one processor, that recreates the original packet segmentation of the network data upon receiving the packet identifying data and the one or more performance enhanced packets by;

retrieving information about each length of the two or more original network data packets from the packet identifying data.

12. The system of claim 11, wherein the fourth module is executed by the second PEP to recreate the original packet segmentation of the network data upon receiving the packet identifying data and the one or more performance enhanced packets from the first PEP.

13. The system of claim 11, wherein the fourth module further recreates the original packet segmentation of the network data upon receiving the packet identifying data and the one or more performance enhanced packets by:

extracting data segments in the two or more original network data packets exactly as they were received in the first PEP, and

generating a new header that is the same as the removed header for each one of the extracted data segments, such that new data packets are regenerated, the regenerated new data packets being identical to the two or more original network data packets.

14. The system of claim 11, wherein the packet identifying data includes one or more of the following:

lengths, length deltas, Differentiated Services Code Point (DSCP) markings, priority markings, and options.

15. The system of claim 11, wherein the third module is configured to transmit the packet identifying data with the performance enhanced packets.

16. The system of claim 11, wherein the received network data is compressed or encrypted.

17. The system of claim 16, wherein the packet identifying data is descriptive of compressed lengths of the two or more original data packets.

18. The system of claim 11, wherein the packet identifying data is inserted into the network data after the network data is compressed and before the network data is encrypted.

19. The system of claim 11, wherein the third module is configured to transmit the packet identifying data separately from the performance enhanced packets.

20. The system of claim 11, wherein the packet identifying data is descriptive of lengths of the two or more original network data packets.

21. A non-transitory computer-readable medium having instructions stored thereon, which when executed by one or more computers, causes the one or more computers to:

receive network data to be transported between a first Performance Enhancing Proxy (PEP) and a second PEP, the network data being segmented in two or more original network data packets;

remove a header from each of the two or more original network data packets and collect packet identifying data associated with the two or more original network data packets from the removed header before the network data is packetized into one or more performance enhanced packets by the first PEP, the packet identifying data comprising data regarding the segmentation of the network data into the two or more original network data packets; and

transmit the packet identifying data and the one or more performance enhanced packets to the second PEP so that the second PEP can reproduce the original packet segmentation of the network data upon receiving the packet identifying data and the one or more performance enhanced packets from the first PEP based on information about each length of the two or more original network data packets from the packet identifying data.