Network testing agent with integrated microkernel operating system

• US 20060045019A1
• Filed: 08/31/2005
• Published: 03/02/2006
• Est. Priority Date: 09/01/2004
• Status: Abandoned Application

• Current Assignee: Internetwork, Inc.
• Original Assignee: Internetwork, Inc.
• Inventors: Wesemann, Darren Leroy, Patzschke, Till Immanuel
• Application Number:
  US11/216,971
• Publication Number:
  US 20060045019A1
• Time in Patent Office: Days
• US Class Current: 370/241
• CPC Class Codes: H04L 41/0896 Bandwidth or capacity management, i.e. automatically increasing or decreasing capacities flow or congestion control using dynamic resource allocation, e.g. in-call renegotiation, H04L47/76
• CPC Class Codes: H04L 41/147 for predicting network behaviour
• CPC Class Codes: H04L 41/5003 Managing SLA; Interaction between SLA and QoS
• CPC Class Codes: H04L 41/509 wherein the managed service relates to media content delivery, e.g. audio, video or TV
• CPC Class Codes: H04L 41/5096 wherein the managed service relates to distributed or central networked applications
• CPC Class Codes: H04L 43/50 Testing arrangements

Abstract

A system for performing testing of a network device includes an agent. The agent can simulate multiple simultaneous users that access the network device or test the service provided to individual users. The agent generally includes: a plurality of microprocesses, each corresponding to a simulated user and including data packet templates; agent code configured to switch between the plurality of microprocesses to enable the microprocesses to create data packets from the data packet templates and to initiate the transmission of the data packets in response to the state of the corresponding simulated user; and a microkernel configured to preformat the data packets prior to transmitting the data packets to an operating system associated with the agent. The agent can also be used to determine quality of service ratings.

Claims

1. A system for performing load testing of a network device, comprising:

an agent that simulates multiple simultaneous users that access the network device, the agent including;

a plurality of microprocesses, each corresponding to a simulated user and including data packet templates;

agent code configured to switch between the plurality of microprocesses to enable the microprocesses to create data packets from the data packet templates and to initiate the transmission of the data packets in response to the state of the corresponding simulated user; and

a microkernel configured to preformat the data packets prior to transmitting the data packets to an operating system associated with the agent.

2. A system as defined in claim 1, wherein the microkernel preformats the data packets by adding a known source and destination address of the network device such that the operating system can send data packets originating from multiple different microprocesses using only a single network connection, without processing individual packets.

3. A system as defined in claim 1, wherein the microkernel preformats the data packets in HTTP protocol.

4. A system as defined in claim 1, wherein the microkernel preformats the data packets in SMTP protocol.

5. A system as defined in claim 1, wherein the operating system handles a number of processes that is less than the number of simulated simultaneous users.

6. A system as defined in claim 1, wherein the operating system handles only one process while transmitting data packets for the multiple simulated simultaneous users.

7. A system as defined in claim 1, wherein the data packets that are transmitted to the network device include data that is generated in response to incoming data packets received from the network device.

8. A system as defined in claim 7, wherein at least one microprocess is initiated based on data received from the network device or events derived thereof.

9. A method for performing load testing of a network device, comprising using a system as defined in claim 1 to generate data packets that are transmitted to the network device.

10. A method for transmitting out-of-band data packets, comprising:

initiating operation of an agent in a computing device, the agent having a microprocess and a microkernel;

by the microkernel, receiving data packets from the microprocess and formatting the data packets with known source and destination address of a network recipient prior to sending the data packets to the network recipient; and

sending the formatted data packet to the network recipient.

11. A method as defined in claim 10, wherein sending the formatted data packet bypasses an operating system upon which the agent resides.

12. A method as defined in claim 10, further comprising sending the formatted data packet directly to the network recipient without passing the formatted data packet through any other operating system or network server.

13. A method as defined in claim 10, wherein the data packet is sent from the agent to the network recipient in HTTP protocol.

14. A method as defined in claim 10, wherein the data packet is sent from the agent to the network recipient as an SMTP packet.

15. A method for estimating the quality of services received by a user from a network based service provider, the method comprising:

providing an agent on a connectivity device that is in at least intermittent communication with a network recipient;

initiating, at a microprocess on the agent, an operation of the agent that tests the operation of the connectivity device;

by a microkernel on the agent, receiving at least one data packet from the microprocess and formatting the data packet with known source and destination address of a network recipient prior to sending the data packet to the network recipient; and

sending the formatted data packet to the network recipient;

wherein the network recipient receives the data packet and uses the data packet to determine a rating that is predictive of at least one aspect of the quality of services experienced by a user in normal operation of the connectivity device.

16. A method as defined in claim 15, wherein the connectivity device comprises a cellular telephone, a set-top box, a modem, a VoIP phone, a wirelessly connected computer, or a computer.

17. A method as defined in claim 15, wherein the network recipient further comprises an expert engine configured for analyzing the data packet and providing a predictive analysis.

18. A method as defined in claim 15, further comprising, at the network recipient, an act of processing the data packet and at least one additional data packet with an expert engine to determine the rating.

19. A method as defined in claim 15, wherein the data packets are sent from the agent to the network recipient in HTTP protocol.

20. A method as defined in claim 15, wherein the data packets are sent from the agent to the network recipient as an SMTP packet.

21. A method as defined in claim 15, wherein the operation of the agent comprises simulating an operation of a user operating the connectivity device.