Configuring Onboard Failure Logging
This chapter describes how to configure the onboard failure logging (OBFL) features on Cisco NX-OS devices.
This chapter includes the following sections:
•Information About OBFL
•Licensing Requirements for OBFL
•Prerequisites for OBFL
•Guidelines and Limitations
•Configuring OBFL
•Verifying the OBFL Configuration
•OBFL Example Configuration
•Default Settings
•Additional References
Information About OBFL
This section includes the following topics:
•OBFL Overview
•Virtualization Support
OBFL Overview
Cisco NX-OS provides the ability to log failure data to persistent storage, which you can retrieve and display for analysis at a later time. This onboard failure logging (OBFL) feature stores failure and environmental information in nonvolatile memory on the module. The information will help analyze failed modules.
The data stored by OBFL include the following:
•Time of initial power-on
•Slot number of the module in the chassis
•Initial temperature of the module
•Firmware, BIOS, FPGA, and ASIC versions
•Serial number of the module
•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
OBFL stores a kernel trace in case Cisco NX-OS crashes.
Virtualization Support
You must be in the default virtual device context (VDC) to configure and display OBFL information. See the Cisco Nexus 7000 Series NX-OS Virtual Device Context Configuration Guide, Release 4.x for more information on VDCs.
Licensing Requirements for OBFL
The following table shows the licensing requirements for this feature:
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NX-OS |
OBFL requires no license. Any feature not included in a license package is bundled with the Cisco NX-OS system images and is provided at no extra charge to you. For a complete explanation of the NX-OS licensing scheme, see the Cisco NX-OS Licensing Guide |
Prerequisites for OBFL
If you configure VDCs, install the Advanced Services license and enter the desired VDC (see the Cisco Nexus 7000 Series NX-OS Virtual Device Context Configuration Guide, Release 4.x).
You must have network-admin user privileges and be logged into the default VDC.
Guidelines and Limitations
OBFL has the following guidelines and limitations:
•OBFL is enabled by default.
•OBFL flash supports a limited number of writes and erases. The more logging you enable, the faster you use up this number of writes and erases.
Note Be aware that the Cisco NX-OS commands for this feature may differ from those commands used in Cisco IOS.
Configuring OBFL
You can configure the OBFL features on Cisco NX-OS devices.
BEFORE YOU BEGIN
Make sure you are in global configuration mode.
SUMMARY STEPS
1. hw-module loggine onboard
2. hw-module logging onboard environmental-history
3. hw-module logging onboard error-stats
4. hw-module logging onboard interrupt-stats
5. hw-module logging onboard module slot
6. hw-module logging onboard module obfl-log
7. show logging onboard
8. copy running-config startup-config
DETAILED STEPS
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Step 1 |
config t
Example: switch# config t Enter configuration commands, one per line. End with CNTL/Z. switch(config)# |
Places you in global configuration mode. |
Step 1 |
hw-module logging onboard
Example: switch(config)# hw-module logging onboard Module: 7 Enabling ... was successful. Module: 10 Enabling ... was successful. Module: 12 Enabling ... was successful. |
Enables all OBFL features. |
Step 2 |
hw-module logging onboard environmental-history
Example: switch(config)# hw-module logging onboard environmental-history Module: 7 Enabling environmental-history ... was successful. Module: 10 Enabling environmental-history ... was successful. Module: 12 Enabling environmental-history ... was successful. |
Enables the OBFL environmental history. |
Step 3 |
hw-module logging onboard error-stats
Example: switch(config)# hw-module logging onboard error-stats Module: 7 Enabling error-stats ... was successful. Module: 10 Enabling error-stats ... was successful. Module: 12 Enabling error-stats ... was successful. |
Enables the OBFL error statistics. |
Step 4 |
hw-module logging onboard interrupt-stats
Example: switch(config)# hw-module logging onboard interrupt-stats Module: 7 Enabling interrupt-stats ... was successful. Module: 10 Enabling interrupt-stats ... was successful. Module: 12 Enabling interrupt-stats ... was successful. |
Enables the OBFL interrupt statistics. |
Step 5 |
hw-module logging onboard module slot
Example: switch(config)# hw-module logging onboard module 7 Module: 7 Enabling ... was successful. |
Enables the OBFL information for a module. |
Step 6 |
hw-module logging onboard obfl-log
Example: switch(config)# hw-module logging onboard obfl-log Module: 7 Enabling obfl-log ... was successful. Module: 10 Enabling obfl-log ... was successful. Module: 12 Enabling obfl-log ... was successful. |
Enables the boot uptime, device version, and OBFL history. |
Step 7 |
show logging onboard
Example: switch(config)# show logging onboard ---------------------------- OBFL Status ---------------------------- Switch OBFL Log: Enabled
Module: 7 OBFL Log: Enabled cpu-hog Enabled environmental-history Enabled error-stats Enabled exception-log . . .
Fri Mar 21 19:07:33 2008 (957597 us) Module 2 SecondaryBootROM test has failed 20 times with error BIOS file checksum error
Library could not be opened *** /lc/isan/lib/libcrdcfg.so: undefined symbol: get_slot_id *** plog_show_data_type: Error opening library statcl, func_name statcl_disp_func |
(Optional) Displays information about OBFL. |
Step 8 |
copy running-config startup-config
Example: switch(config)# copy running-config startup-config |
(Optional) Saves this configuration change. |
Verifying the OBFL Configuration
Use the show logging onboard status command to display the configuration status of OBFL.
switch# show logging onboard status
----------------------------
----------------------------
Module: 2 OBFL Log: Enabled
environmental-history Enabled
miscellaneous-error Enabled
obfl-log (boot-uptime/device-version/obfl-history) Enabled
Module: 6 OBFL Log: Enabled
environmental-history Enabled
miscellaneous-error Enabled
obfl-log (boot-uptime/device-version/obfl-history) Enabled
Use the following commands to display OBFL information stored in flash on a module:
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show logging onboard boot-uptime |
Displays the boot and uptime information. |
show logging onboard counter-stats |
Displays statistics on all ASIC counters. |
show logging onboard device-version |
Displays device version information. |
show logging onboard endtime |
Displays OBFL logs to a specified end time. |
show logging onboard environmental-history |
Displays environmental history. |
show logging onboard error-stats |
Displays error statistics. |
show logging onboard exception-log |
Displays exception log information. |
show logging onboard interrupt-stats |
Displays interrupt statistics. |
show logging onboard kernel-trace |
Displays kernel trace information. |
show logging onboard module slot |
Displays OBFL information for a specific module. |
show logging onboard obfl-history |
Displays history information. |
show logging onboard obfl-logs |
Displays log information. |
show logging onboard stack-trace |
Displays kernel stack trace information. |
show logging onboard starttime |
Displays OBFL logs from a specified start time. |
show logging onboard status |
Displays OBFL status information. |
Note Use the clear logging onboard command to clear the OBFL information for each of the show command options listed.
OBFL Example Configuration
This example shows how to enable OBFL on module 2 for environmental information:
conf t
hw-module logging onboard module 2 environmental-history
Default Settings
Table 15-1 lists the default settings for OBFL parameters.
Table 15-1 Default OBFL Parameters
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OBFL |
All features enabled |
Additional References
For additional information related to implementing OBFL, see the following sections:
•Related Documents
•Standards
Related Documents
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OBFL CLI commands |
Cisco Nexus 7000 Series NX-OS System Management Configuration Guide, Release 4.x |
configuration files |
Cisco Nexus 7000 Series NX-OS Fundamentals Configuration Guide, Release 4.x |
VDCs |
Cisco Nexus 7000 Series NX-OS Virtual Device Context Configuration Guide, Release 4.x |
Standards
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No new or modified standards are supported by this feature, and support for existing standards has not been modified by this feature. |
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