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High Availability
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Software Component Health Monitoring
On each of the line cards and the RPM, there are a number of software components. FTOS performs a
periodic health check on each of these components by querying the status of a flag, which the
corresponding component resets within a specified time.
If any health checks on the RPM fail, then the FTOS fails over to standby RPM. If any health checks on a
line card fails, FTOS resets the card to bring it back to the correct state.
System Health Monitoring
FTOS also monitors the overall health of the system. Key parameters like CPU utilization, free memory,
error counters (CRC failures, packet loss, etc.) are measured, and upon exceeding a threshold can be used
to initiate recovery mechanism.
Failure and Event Logging
Dell Force10 systems provides multiple options for logging failures and events.
Trace Log
Developers interlace messages with software code to track a the execution of a program. These messages
are called trace messages; they are primarily used for debugging and provide lower level information than
event messages, which are primarily used by system administrators. FTOS retains executed trace messages
for hardware and software and stores them in files (logs) on the internal flash.
•
NV Trace Log—contains line card bootup trace messages that FTOS never overwrites, and is stored in
internal flash under the directory NVTRACE_LOG_DIR.
•
Trace Log—contains trace messages related to software and hardware events, state, and errors. Trace
Logs are stored in internal flash under the directory TRACE_LOG_DIR.
•
Crash Log—contains trace messages related to IPC and IRC timeouts and task crashes on line cards,
and is stored under the directory CRASH_LOG_DIR.
For more information on trace logs and configuration options, see:
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Chapter 60, C-Series Debugging and Diagnostics
•
Chapter 61, E-Series TeraScale Debugging and Diagnostics
Core Dumps
A core dump is the contents of RAM being used by a program at the time of a software exception and is
used to identify the cause of the exception. There are two types of core dumps, application and kernel.
Summary of Contents for Force10 E300
Page 1: ...FTOS Configuration Guide FTOS 8 4 2 7 E Series TeraScale C Series S Series S50 S25 ...
Page 32: ...32 w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 132: ...132 802 1X w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 310: ...310 Configuration Replace and Rollback w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 330: ...330 Dynamic Host Configuration Protocol w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 402: ...402 High Availability w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 462: ...462 Interfaces w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 482: ...482 IPv4 Addressing w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 506: ...506 IPv6 Addressing w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 582: ...582 Layer 2 w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 642: ...642 Multicast Source Discovery Protocol w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 662: ...662 Multiple Spanning Tree Protocol w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 690: ...690 Object Tracking w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 754: ...754 PIM Dense Mode w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 784: ...784 PIM Source Specific Mode w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 800: ...800 Power over Ethernet w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 876: ...876 Quality of Service w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 892: ...892 Routing Information Protocol w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1006: ...1006 Simple Network Management Protocol w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1018: ...1018 SONET SDH w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1048: ...1048 Broadcast Storm Control w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1096: ...1096 Uplink Failure Detection UFD w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1098: ...1098 Upgrade Procedures w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1196: ...1196 C Series Debugging and Diagnostics w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1252: ...1252 Standards Compliance w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1262: ...1262 Index w w w d e l l c o m s u p p o r t d e l l c o m ...