Proactive error capture
During operation, an electronic device may store, in memory, information associated with operation of the electronic device, such as during communication and processing of one or more packets or frames. Furthermore, an error-event monitor in the electronic device may, during a time interval, analyze at least a portion of the stored information to detect an occurrence of an error event in one or more types of error events in the electronic device. When the error event occurs during the time interval, the electronic device may perform a remedial action and may persist, in the memory, at least a second portion of the stored information associated with the error event. Otherwise, when the error event does not occur during the time interval, the electronic device may overwrite, in the memory, the stored information with additional information associated with operation of the electronic device during subsequent communicating and processing.
1. An electronic device, comprising:
an interface circuit configured to communicate one or more packets or frames;
a processor, coupled to the interface circuit, configured to process the one or more packets or frames, or contents of the one or more packets or frames; and
memory coupled to the processor, wherein the electronic device is configured to:
communicate, using the interface circuit, the one or more packets or frames;
process, using the processor, the one or more packets or frames, or contents of the one or more packets or frames;
store, in the memory, information associated with operation of the electronic device during the communicating and the processing;
analyze, using an error-event monitor in the electronic device, at least a portion of the stored information during a time interval to detect an occurrence of an error event that comprises a previously unreported type of error event that is different from one or more known types of error events in the electronic device; and
when the error event occurs during the time interval, perform a remedial action and persist, in the memory, at least a second portion of the stored information associated with the error event.
2. The electronic device of claim 1 , wherein, when the error event does not occur during the time interval, the electronic device is configured to overwrite, in the memory, the stored information with additional information associated with operation of the electronic device during subsequent communicating and processing.
3. The electronic device of claim 1 , wherein the electronic device comprises a router or a switch.
4. The electronic device of claim 1 , wherein the stored information comprises one or more of: state information for the interface circuit, state information for the processor, or information associated with the one or more packets or frames.
5. The electronic device of claim 1 , wherein, when the error event occurs, the error-event monitor is configured to increment a stored statistic for an associated type of error event.
6. The electronic device of claim 1 , wherein, when the error event occurs, the error-event monitor is configured to store timestamp information in the memory.
7. The electronic device of claim 1 , wherein the error-event monitor is implemented as error-event program instructions executed by the processor.
8. The electronic device of claim 1 , wherein the error-event monitor is implemented using a circuit.
9. The electronic device of claim 1 , wherein the remedial action comprises providing, using the interface circuit, a notification message addressed to a computer.
10. The electronic device of claim 9 , wherein, in response to the notification, the electronic device is configured to:
receive, using the interface circuit, a request associated with a second computer for the stored information associated with the error event; and
provide, using the interface circuit, the stored information associated with the error event in response to the request.
11. The electronic device of claim 1 , wherein the analysis is based at least in part on a speed of occurrence of error events.
12. The electronic device of claim 1 , wherein the electronic device is configured to perform a mapping from error events to a module and commands corresponding to the error events; and
wherein the module comprises: a data plane, a control plane, a management plane or the interface circuit.
13. A non-transitory computer-readable storage medium for use in conjunction with an electronic device, the computer-readable storage medium storing program instructions that, when executed by a networking device in the networking devices, causes the networking device to perform operations comprising:
communicating, using an interface circuit in the electronic device, one or more packets or frames;
processing, using a processor in the electronic device, the one or more packets or frames, or contents of the one or more packets or frames;
storing, in memory in the electronic device, information associated with operation of the electronic device during the communicating and the processing;
analyzing, using an error-event monitor in the electronic device, at least a portion of the stored information during a time interval to detect an occurrence of an error event that comprises a previously unreported type of error event that is different from one or more known types of error events in the electronic device; and
when the error event occurs during the time interval, performing a remedial action and persisting, in the memory, at least a second portion of the stored information associated with the error event.
14. The non-transitory computer-readable storage medium of claim 13 , wherein, when the error event does not occur during the time interval, the operations comprise overwriting, in the memory, the stored information with additional information associated with operation of the electronic device during subsequent communicating and processing.
15. The non-transitory computer-readable storage medium of claim 13 , wherein the electronic device comprises a router or a switch.
16. The non-transitory computer-readable storage medium of claim 13 , wherein the stored information comprises one or more of: state information for the interface circuit, state information for the processor, or information associated with the one or more packets or frames.
17. The non-transitory computer-readable storage medium of claim 13 , wherein, when the error event occurs, the operations comprise:
incrementing, using the error-event monitor, a stored statistic for an associated type of error event; and
storing, using the error-event monitor, timestamp information in the memory.
18. The non-transitory computer-readable storage medium of claim 13 , wherein the error-event monitor is implemented as error-event program instructions executed by the processor.
19. The non-transitory computer-readable storage medium of claim 13 , wherein the remedial action comprises providing, using the interface circuit, a notification message addressed to a computer.
20. The non-transitory computer-readable storage medium of claim 19 , wherein, in response to the notification, the operations comprise:
receiving, using the interface circuit, a request associated with a second computer for the stored information associated with the error event; and
providing, using the interface circuit, the stored information associated with the error event in response to the request.
21. A method for selectively and automatically capturing error-event information, comprising:
by an electronic device:
communicating, using an interface circuit in the electronic device, one or more packets or frames;
processing, using a processor in the electronic device, the one or more packets or frames, or contents of the one or more packets or frames;
storing, in memory in the electronic device, information associated with operation of the electronic device during the communicating and the processing;
analyzing, using an error-event monitor in the electronic device, at least a portion of the stored information during a time interval to detect an occurrence of an error event that comprises a previously unreported type of error event that is different from one or more known types of error events in the electronic device; and
when the error event occurs during the time interval, performing a remedial action and persisting, in the memory, at least a second portion of the stored information associated with the error event.
22. The method of claim 21 , wherein, when the error event does not occur during the time interval, the method comprises overwriting, in the memory, the stored information with additional information associated with operation of the electronic device during subsequent communicating and processing.