Respond To Pcdfo Events - Dell Force10 C150 Configuration Manual

The PCDFO polling feature monitors data received over the switch fabric. When a DFO error is detected,
no automatic action is initiated by the system. The message issued is similar to:
Message 4 PCDFO error message
%RPM1-P:CP %CHMGR-2-SFM_PCDFO: PCDFO error detected for SFM4
The following graphic illustrates the E600 and E1200 switch fabric architecture. Each ingress and egress
Buffer and Traffic Management (BTM) ASIC maintains nine channel connections to the TeraScale Switch
Fabric (TSF) ASIC.

Respond to PCDFO events

Troubleshooting PCDFO events requires applying some human intelligence to differentiate between
transient and systematic failures. PCDFO events can be caused by several factors, including:
• Backplane noise
• Data corruption
• Bad epoch timing
• Mis-configuration of backplane
There are two PCDFO error types: Transient and Systematic. Transient error are non-persistent events that
occur as one-events during normal operation. Systematic errors are repeatable events. For example, some
hardware device or component is malfunctioning in such a way that it persistently exhibits incorrect
behavior.
E-Series TeraScale Debugging and Diagnostics | 1205