DELL S50V User Manual

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E-Series TeraScale Debugging and Diagnostics

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For the transient case, PCDFO errors are not reported to the log. The hardware system automatically 
recovers from the error state, and the dataplane continues to function properly. In persistent case, PCDFO 
errors will appear in the log, and the error state is likely to remain if not handled.

With PCDFO error data alone, it is impossible to arrive at a conclusion which will pinpoint the cause for 
PCDFO error or reason for packets drop. For example, it is quite possible to have multiple line cards/RPM 
show different channels with PCDFO error. Nonetheless, PCDFO status is a very useful data point as an 
indication of the health of the dataplane, particularly when an error is persistent.

To disable the PCDFO polling feature, use the following command in CONFIGURATION mode.

Detection of a PCDFO event causes the system to generate a message similar to the following. 

Events are logged when PCDFO error first occurs on any SFM and when PCDFO error pattern changes. 

No automatic action is taken by the system when a DFO error is detected. If such an error is reported, note 
the SFM slot number identified in the message and contact Dell Force10 technical support. In addition, to 
confirm that the identified SFM needs to be replaced, use the diag sfm all-loopback to execute a manual 
dataplane loopback test. 

Each RPM consists of three CPUs:

•

Control Processor (CP)

•

Routing Processor 1 (RP1)

•

Routing Processor 2 (RP2) 

Disable the PCDFO polling feature. 
To re-enable, use the 

 command.

dataplane-diag disable dfo-reporting

CONFIGURATION

Message 5  PCDFO error detection

%RPM1-P:CP %CHMGR-2-SFM_PCDFO: PCDFO error detected for SFM #