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Foundry NetIron M2404C and M2404F Metro Access Switches
Troubleshooting and Monitoring (Rev. 03)
Periodic Monitoring
© 2008 Foundry Networks, Inc.
Page 26 of 55
Periodic Monitoring
NetIron M2404F and M2404C switches monitor their own periodic operation.
For more reliable day-to-day operation
, periodic crucial switch functions can be monitored in
the background, alerting the network administrator when monitored indicators vary from operating
norms.
As a troubleshooting tool
, periodic monitoring can be used to catch transient conditions as they
occur, and to track irregular behaviors. Because the periodic monitoring facility can generate
SNMP traps, it can be used to trigger other diagnostic data polling based on the device operational
status.
Table 12
displays the operational indicators that are monitored for each application software
platform.
Table 12: Periodic Monitoring Operational Indicators
Indicator
Monitored As
Temperature Measured
value
CPU usage
Measured value
RAM usage
Measured value
Fan Pass/Fail
Power supply
Pass/Fail
Overview
There are two types of monitored indicators:
•
Pass/Fail conditions
: Are fans working? Is the power supply working? The monitor
function returns a simple Pass or Fail operational status for power and fans.
•
Measured values
: What is the temperature? What percentage of CPU is being used? What
percentage of RAM is being used? The monitor function returns actual measured values
for the temperature, CPU and RAM indicators.
•
Temperature monitoring measures the temperature using the Fahrenheit or Celsius
scale.
Alert Behavior
An alert is generated when the Power or Fan indicator reports a Fail condition
-or-
the Temperature or Port indicator diverges from a preset limit value.
Three kinds of alert action are available:
•
log
– the alert status is written to a CLI interface history and error message log files
•
led status
– the corresponding status LED flashes on the unit front panel.
•
trap
– an SNMP trap is generated.