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System Monitoring
● Overview of system monitoring..................................................................................... 265
● Configure system monitoring........................................................................................ 266
● System monitoring on FCX and ICX devices................................................................ 268
● System monitoring for Fabric Adapters.........................................................................270
● System monitoring for Cross Bar.................................................................................. 273
● System monitoring for Packet Processors.................................................................... 275
Overview of system monitoring
System monitoring (sysmon) is a utility that runs as a background process and monitors connections
and components of the device for specific errors and logs them. It has a default policy that controls the
parameters that are monitored and actions to be taken if a fault is detected. These policies include the
type of errors, the threshold for errors to be logged, and the frequency of checking for errors. You can
use the CLI commands to configure these policies.
The sysmon utility monitors the hardware error registers to identify errors and failures. You can
configure the sysmon timer to define how frequently the sysmon utility queries the hardware error
registers. The data generated by the sysmon utility is written to either the sysmon internal log or to the
syslog.
Sysmon starts the timer based on the specified timer setting, with the default value as three minutes.
After the interval specified by the timer, the utility checks the hardware error registers. If the sysmon
utility detects an error in a hardware error register, it increments the relevant error count by 1.
Otherwise, it restarts the timer and waits for the given interval. Hardware error registers are cleared
when read, so after Sysmon reads the value, they are reset to zero.
Sysmon checks the value of the error counters it maintains and the values specified in the sysmon
threshold. If the value of the error counters exceeds the matching threshold, it takes the action specified
(logs internally or to the syslog). Otherwise, it restarts the timer and waits for the specified interval
before checking for errors again.
To ensure that logging repeating errors does not cause the logs to overflow, you can specify a back-off
value that allows the utility to skip the specified number of error instances before logging again. If the
error count is smaller than the specified log back-off value, the utility logs the error to the internal log or
syslog, restarts the timer and waits for the specified interval before checking for errors again.
Configuration notes and feature limitations
• While system monitoring is supported on all FastIron devices, the types of errors monitored vary
according to devices. On FSX devices, the sysmon utility monitors the following for errors:
‐
Fabric Adapter (FA) for processing and link errors.
‐
Cross Bar (XBAR) or Switch Fabric Module (SFM) for processing and link errors.
‐
Packet processor (PP) for link errors.
On FCX and ICX devices, the sysmon utility monitors the following errors:
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