On-Board Failure Logging; About Obfl - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual

On-Board Failure Logging

S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
On-Board Failure Logging
The Generation 2 Fibre Channel switching modules provide the facility to log failure data to persistent
storage, which can be retrieved and displayed for analysis. This on-board failure logging (OBFL) feature
stores failure and environmental information in nonvolatile memory on the module. The information will
help in post-mortem analysis of failed cards.
This section includes the following topics:
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About OBFL

OBFL data is stored in the existing CompactFlash on the module. OBFL uses the persistent logging
(PLOG) facility available in the module firmware to store data in the CompactFlash. It also provides the
mechanism to retrieve the stored data.
The data stored by the OBFL facility includes the following:
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Cisco MDS 9000 Family CLI Configuration Guide
59-20
About OBFL, page 59-20
Configuring OBFL for the Switch, page 59-21
Configuring OBFL for a Module, page 59-22
Displaying OBFL Logs, page 59-23
Time of initial power-on
Slot number of the card in the chassis
Initial temperature of the card
Firmware, BIOS, FPGA, and ASIC versions
Serial number of the card
Stack trace for crashes
CPU hog information
Memory leak information
Software error messages
Hardware exception logs
Environmental history
OBFL specific history information
ASIC interrupt and error statistics history
ASIC register dumps
Chapter 59 Monitoring System Processes and Logs
OL-18084-01, Cisco MDS NX-OS Release 4.x