Administrator Guide

director-1-1-B B0-FC00 (front-end) crc-errors has increased by 15254
director-1-1-B B0-FC01 (front-end) crc-errors has increased by 953630
Things to note
Take note of the number of ports and the number of directors reporting issues. For instance, if half of the ports are reporting
issues, then it may indicate a fabric-wide event. Whereas if only one port is reporting an error, then the problem is localized to a
specific I-T Nexus.
The script is designed to suppress email after 5 minutes (as to not flood an email server). At that point, it will only report once
an hour. The firmware connect to management server will contain all reports including any that were suppressed to email.
Logging: The logging file port-stats-monitor.log can be found on the management server in the /var/log/
VPlex/cli/ directory.This log file is gathering raw data. The grep command [grep "back-end\|front-end\|wan-
com" /var/log/VPlex/cli/port-stats-monitor.log] can produce a summary that is related to error reported in the
port-stats-monitor.log file.
Example:
grep "back-end\|front-end\|wan-com" /var/log/VPlex/cli/port-stats-monitor.log
/var/log/VPlex/cli/port-stats-monitor.log.9:director-1-1-B B1-FC02 (back-end) invalid-
transmission-word has increased by 2956
/var/log/VPlex/cli/port-stats-monitor.log.9:director-1-1-B B1-FC02 (back-end) loss-of-
sync has increased by 443
/var/log/VPlex/cli/port-stats-monitor.log.9:director-1-1-B B1-FC02 (back-end) invalid-
transmission-word has increased by 3494
/var/log/VPlex/cli/port-stats-monitor.log.9:director-1-1-B B1-FC02 (back-end) loss-of-
sync has increased by 528
/var/log/VPlex/cli/port-stats-monitor.log.9:director-1-1-B B1-FC02 (back-end) invalid-
transmission-word has increased by 5996
Statistics
Metro node collects and reports three types of statistics:
● counters - Monotonically increasing value (analogous to a car’s odometer)
○ Counters are used to count bytes, operations, and errors.
○ Often reported as a rate such as counts/second or KB/second.
● readings - Instantaneous value (analogous to a car’s speedometer)
○ Readings are used to display CPU utilization, memory utilization.
○ Value can change every sample.
● period-average - Average of a series calculated over the last sample period. If:
○ current_reading_sum is the sum of all readings for the particular statistic since the monitor's creation.
○ previous_reading_sum is the count of all readings for the statistic since the monitor's creation.
○ period-average = (current_reading_sum - previous_reading_sum) / (current_reading_count - previous_reading_count)
Many statistics require a target port or volume to be specified. Output of the monitor stat-list command identifies which
statistics need a target defined, and the type of target required when a monitor is created.
Figure 10. Monitoring targets
Performance and Monitoring
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