Automated discovery and forwarding of relevant network traffic with respect to newly connected network tools for network tool optimizers

• US 9,781,044 B2
• Filed: 07/16/2014
• Issued: 10/03/2017
• Est. Priority Date: 07/16/2014
• Status: Active Grant

• Current Assignee: Keysight Technologies Singapore Sales Pte Ltd (Keysight Technologies, Inc.)
• Original Assignee: Anue Systems Inc (Keysight Technologies, Inc.)
• Inventors: Raney, Kristopher
• Primary Examiner(s): Harrell, Robert B
• Application Number:
  US14/332,818
• Publication Number:
  US 20160020981A1
• Time in Patent Office: 1,175 Days
• Field of Search: 370392, 709224
• CPC Class Codes: H04L 43/028 by filtering
• CPC Class Codes: H04L 43/12 Network monitoring probes
• CPC Class Codes: H04L 45/02 Topology update or discovery
• CPC Class Codes: H04L 45/64 using an overlay routing layer
• CPC Class Codes: H04L 47/20 Traffic policing
• CPC Class Codes: H04L 47/22 Traffic shaping

Abstract

Network tool optimizers and related methods are disclosed that provide automated discovery and configuration of network tool devices. The disclosed embodiments include tool processors having tool discovery engines and tool configuration engines that provide discovery of tool information and generation of rules for filter engines within the network tool optimizer (NTO) so that relevant network traffic received by the NTO is forwarded to network tool devices connected to the NTO. New network traffic sources connected to the NTO can also be automatically configured to forward relevant traffic to the network tool devices based upon the discovered tool information. Further, a database of tool information can be stored within the NTO and can be used by the NTO in determining relevant traffic for connected tool devices. A variety of different implementations can use the automatic tool discovery and configuration embodiments.

Claims

1. A method for operating a network tool optimizer (NTO) device having one or more input ports, one or more output ports, one or more filter engines, and a tool processor coupled to the one or more output ports, comprising:

communicating, with the tool processor, through the one or more output ports with a newly connected network tool device to receive tool information from the newly connected network tool device after it is connected to the one or more output ports for the network tool optimizer (NTO) device;

automatically discovering, with the tool processor, relevant traffic information for the newly connected network tool device based upon the tool information received from the newly connected network tool device;

automatically generating, with the tool processor, packet forwarding rules for the one or more filter engines for the NTO device based upon the relevant traffic information discovered for the newly connected network tool device, the packet forwarding rules being configured to forward relevant network traffic to the newly connected network tool device;

applying the packet forwarding rules to the one or more filter engines;

receiving network input traffic at the one or more input ports for the NTO device; and

forwarding relevant network traffic from the network input traffic to the newly connected network tool device through the one or more output ports using the one or more filter engines.

2. The method of claim 1, wherein the discovering step comprises automatically obtaining the relevant traffic information from a database stored within a data storage medium for the NTO device based upon the tool information received from the newly connected network tool device.

3. The method of claim 2, wherein the tool information received from the newly connected network tool device comprises tool identification information, and further comprising using the tool identification information to automatically obtain the relevant traffic information from the database.

4. The method of claim 3, further comprising using tool identification information received from a user of the NTO device to automatically obtain additional relevant traffic information from the database.

5. The method of claim 2, further comprising updating the database over time during operation of the NTO device.

6. The method of claim 1, wherein the tool information received from the newly connected network tool device comprises the relevant traffic information.

7. The method of claim 6, further comprising receiving the relevant traffic information from the newly connected network tool device through an application programming interface for the NTO device.

8. The method of claim 6, further comprising storing the relevant traffic information received from the newly connected network tool device within a database stored within a data storage medium for the NTO device.

9. The method of claim 1, further comprising requesting user approval prior to the applying step and conducting the applying step only if user approval is received.

10. The method of claim 9, further comprising requesting user approval by displaying a message to a user through a graphical user interface.

11. The method of claim 1, wherein the discovering step comprises associating the newly connected network tool device with a previously connected network tool device based upon the tool information, automatically obtaining prior relevant traffic information related to the previously connected network tool device, and using this prior relevant traffic information as the relevant traffic information for the newly connected network tool device.

12. The method of claim 1, further comprising receiving new network input traffic at an input port for the NTO device from a newly connected traffic source, analyzing the new network input traffic to determine if it represents new relevant network traffic for a connected network tool device, generating and applying additional packet forwarding rules for the new relevant network traffic based upon the determination, and forwarding the new relevant network traffic from the new network input traffic to the connected network tool device.

13. The method of claim 1, further comprising analyzing packets within current network input traffic to identify packet types within the network input traffic, determining if one or more of the identified packet types represent additional relevant network traffic for the newly connected network tool device, generating and applying additional packet forwarding rules for the additional relevant network traffic based upon the determination, and forwarding the additional relevant network traffic from the network input traffic to the newly connected network tool device.

14. The method of claim 1, further comprising obtaining additional relevant traffic information from a user of the NTO device.

15. The method of claim 1, wherein the applying step comprises automatically applying the packet forwarding rules without user approval based upon the relevant traffic information.

16. A network tool optimizer (NTO) device, comprising:

one or more input ports;

one or more output ports;

packet forwarding circuitry configured to forward network packets from the input ports to the output ports;

one or more filter engines configured to control at least in part how the packet forwarding circuitry forwards packets between input ports and output ports; and

a tool processor comprising;

a tool discovery engine coupled to the output ports and configured to communicate through the one or more output ports with a newly connected network tool device to receive tool information from the newly connected network tool device after it is connected to the one or more output ports, and to automatically discover relevant traffic information for the newly connected network tool device based upon the tool information received from the newly connected network tool device; and

a tool configuration engine coupled to the one or more filter engines and configured to automatically generate packet forwarding rules for the one or more filter engines based upon the relevant traffic information discovered for the newly connected network tool device and to apply the packet forwarding rules to the one or more filter engines, the packet forwarding rules being configured to forward relevant network traffic to the newly connected network tool device.

17. The network tool optimizer device of claim 16, further comprising a data storage medium, and wherein the tool discovery engine is further configured to automatically obtain the relevant traffic information from a database stored within the data storage medium based upon the tool information received from the newly connected network tool device.

18. The network tool optimizer device of claim 17, wherein the tool information received from the newly connected network tool device comprises tool identification information, and wherein the tool discovery engine is further configured to use the tool identification information to automatically obtain the relevant traffic information from the database.

19. The network tool optimizer device of claim 18, wherein the tool discovery engine is further configured to use tool identification information received from a user of the NTO device to automatically obtain additional relevant traffic information from the database.

20. The network tool optimizer device of claim 17, wherein the tool processor is further configured to update the database over time during operation of the NTO device.

21. The network tool optimizer device of claim 16, wherein the tool received from the newly connected network tool device comprises the relevant traffic information.

22. The network tool optimizer device of claim 21, wherein the tool discovery engine is further configured to receive the relevant traffic information from the newly connected network tool device through an application programming interface.

23. The network tool optimizer device of claim 21, further comprising a data storage medium, and wherein the tool processor is further configured to store the relevant traffic information received from the newly connected network tool device within a database stored within the data storage medium.

24. The network tool optimizer device of claim 16, wherein the tool configuration engine is further configured to request user approval prior and to apply the packet forwarding rules only if user approval is received.

25. The network tool optimizer device of claim 24, wherein the tool configuration engine is further configured to request user approval using a message displayed through a graphical user interface.

26. The network tool optimizer device of claim 16, wherein the tool discovery engine is further configured to associate the newly connected network tool device with a previously connected network tool device based upon the tool information, to automatically obtain prior relevant traffic information related to the previously connected network tool device, and to use this prior relevant traffic information as relevant traffic information for the newly connected network tool device.

27. The network tool optimizer device of claim 16, wherein the tool discovery engine is further configured to analyze packets within new network input traffic received at an input port for the NTO device from a newly connected traffic source to determine if it represents new relevant network traffic for a connected network tool device, and wherein the tool configuration engine is further configured to generate and apply additional packet forwarding rules for the new relevant network traffic based upon the determination and to forward the new relevant network traffic from the new network input traffic to the connected network tool device.

28. The network tool optimizer device of claim 16, wherein the tool discovery engine is further configured to analyze packets within current network input traffic for the NTO device to identify packet types within the network input traffic, to determine if one or more of the identified packet types represent additional relevant network traffic for the newly connected network tool device, and wherein the tool configuration engine is further configured to generate and apply additional packet forwarding rules for the additional relevant network traffic based upon the determination and to forward the additional relevant network traffic from the network input traffic to the newly connected network tool device.

29. The network tool optimizer device of claim 16, wherein the tool discovery engine is further configured to obtain additional relevant traffic information from a user of the NTO device.

30. The network tool optimizer device of claim 16, wherein the tool configuration engine is further configured to automatically apply the packet forwarding rules without user approval.