Switching module

• US 9,253,030 B2
• Filed: 10/07/2014
• Issued: 02/02/2016
• Est. Priority Date: 05/06/2005
• Status: Expired due to Fees

• Current Assignee: Lockheed Martin Corporation (Martin Marietta Corporation)
• Original Assignee: Lockheed Martin Corporation (Martin Marietta Corporation)
• Inventors: Letner, Bernard J., Twigg, Kenneth R.
• Primary Examiner(s): O CONNOR, BRIAN T
• Application Number:
  US14/509,004
• Publication Number:
  US 20150124627A1
• Time in Patent Office: 483 Days
• US Class Current: 1/1
• CPC Class Codes: H04L 41/069 using logs of notifications; Post-processing of notifications
• CPC Class Codes: H04L 43/04 Processing captured monitoring data, e.g. for logfile generation
• CPC Class Codes: H04L 43/0823 Errors, e.g. transmission errors
• CPC Class Codes: H04L 45/28 using route fault recovery
• CPC Class Codes: H04L 49/101 using crossbar or matrix
• CPC Class Codes: H04L 49/357 Fibre channel switches
• CPC Class Codes: H04L 49/55 Prevention, detection or correction of errors
• CPC Class Codes: H04L 49/555 Error detection

Abstract

A fiber channel switching module can include an integrated trace buffer memory, a crossbar switch and a control processor disposed on a single line replaceable module (LRM). The trace buffer memory may be adapted to capture selected data traffic transiting the switch fabric based on pre-selected triggers. The selected data can be read out of the trace buffer memory and used for selected diagnostics.

Claims

1. A method for monitoring network data, the method comprising:

providing a fiber channel switch module comprising;

a trace buffer memory disposed on the module; and

a fabric crossbar disposed on the module and coupled to the trace buffer memory,

the fabric crossbar including a network level monitoring section having simultaneous access to traffic flowing among all nodes connected to the fiber channel switch;

monitoring, by the fiber channel switch module, network traffic;

detecting a trigger event in network traffic between a first node and a second node; and

capturing, in response to detection of the trigger event, data from network traffic between a third node and fourth node, the first, second, third, and fourth nodes all being different than each other.

2. The method of claim 1, wherein the monitoring includes monitoring network traffic based on monitoring parameters.

3. The method of claim 2, further comprising changing the monitoring parameters by reading and processing a fiber channel message sent to a well-known address of the fiber channel switch.

4. The method of claim 3, wherein the module is configured to be installed on an aircraft.

5. The method of claim 4, wherein the fiber channel message for changing monitoring parameters can be received and processed while the aircraft is in flight and the monitoring parameters can be dynamically updated while the aircraft is in flight.

6. The method of claim 1, wherein the trigger event includes a combination of events.

7. The method of claim 6, wherein at least a portion of the network traffic includes a message label, and the combination of events includes a first event that is triggered based on the message label and a second event that is not triggered based on the message label.

8. A method for continuous network-level monitoring of network data, the method comprising:

providing a first fiber channel switch module including;

a first trace buffer memory disposed on the first fiber channel switch module;

a first fabric crossbar constituted by a programmable logic device configured as a fabric crossbar, disposed on the first fiber channel switch module and coupled to the first trace buffer memory; and

a first processor disposed on the first fiber channel switch module and coupled to the first fabric crossbar,

the first fabric crossbar including a first network-level monitoring section having simultaneous access to traffic flowing among all nodes connected to the first fiber channel switch module;

providing a second fiber channel switch module including;

a second trace buffer memory disposed on the second fiber channel switch module;

a second fabric crossbar constituted by a programmable logic device configured as a fabric crossbar, disposed on the second fiber channel switch module and coupled to the second trace buffer memory; and

a second processor disposed on the second fiber channel switch module and coupled to the second fabric crossbar,

the second fabric crossbar including a second network level monitoring section having simultaneous access to traffic flowing among all nodes connected to the second fiber channel switch module;

monitoring, by the first and/or second monitoring section, network traffic;

detecting a trigger event in network traffic;

capturing, in response to detection of the trigger event, data from network traffic;

utilizing the second fiber channel switch module as a redundant replacement for the first fiber channel switch module, and, when a failure of the first fiber channel switch module is detected, operating the second fiber channel switch module as the main fiber channel switch module to provide continuous network-level monitoring of network traffic.

9. The method of claim 8, wherein the first monitoring section and the second monitoring section are both configured to monitor network traffic based on monitoring parameters.

10. The method of claim 9, wherein the first module and the second module are both further configured to change the monitoring parameters by reading and processing a fiber channel message sent to a well-known address of the first fiber channel switch and second fiber channel switch, respectively.

11. The method of claim 10, wherein the first and second fiber channel switch modules are configured to be installed on an aircraft.

12. The method of claim 11, wherein the fiber channel message for changing monitoring parameters can be received and processed while the aircraft is in flight and the monitoring parameters can be dynamically updated while the aircraft is in flight.

13. A system for network-level monitoring of data, the system comprising:

a trace buffer memory on a fiber channel switch module, the trace buffer memory being coupled to a fabric crossbar;

a trace buffer memory controller on the fiber channel switch module;

the trace buffer memory controller having settable monitoring parameters including one or more triggers adapted to cause the trace buffer memory to capture selected data from network traffic data flowing through an optical backplane, the trace buffer memory controller being adapted to simultaneously monitor traffic flowing to and from each node connected to the fiber channel switch module; and

the fiber channel switch module being adapted to monitor network traffic of a first node and detect a trigger event in the network traffic of the first node, and, in response to detection of the trigger event, capture data from network traffic of a second node, the second node being different than the first node.

14. The system of claim 13, wherein the fiber channel switch module is configured to change the monitoring parameters by reading and processing a fiber channel message sent to a well-known address of the fiber channel switch.

15. The system of claim 14, wherein the fiber channel switch module is configured to be installed on an aircraft and is further configured to:

receive and process the fiber channel message to change monitoring parameters while the aircraft is in flight; and

dynamically update the monitoring parameters while the aircraft is in flight.

16. The system of claim 15, wherein the fiber channel switch module is configured to provide access to captured data.

17. The system of claim 16, wherein the fiber channel switch module is configured to automatically transfer captured data to an external storage device when preselected criteria are met.

18. The system of claim 17, wherein the preselected criteria include the trace buffer memory approaching capacity.

19. The system of claim 13, wherein the trigger event includes a combination of events.

20. The system of claim 19, wherein at least a portion of the network traffic data includes a message label, and the combination of events includes a first event that is triggered based on the message label and a second event that is not triggered based on the message label.