Cisco 11503 - CSS Content Services Switch Administration Manual page 243

Chapter 6 Configuring Remote Monitoring (RMON)
Defining the Absolute or Delta Sampling Method
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To see a list of SNMP variables, use the sample-variable ? command. For
example:
(config-rmonalarm[1])# sample-variable ?
apSvcLoadInfoTimeout
apSvcLoadSvcStatRptTimeout
apSvcLoadEnable
apSvcLoadDecayInterval
apSvcLoadStepStatic
apSvcLoadStepSize
apSvcLoadThreshold
...
To remove the sample variable, enter:
(config-rmonalarm[1])# no sample-variable
When you configure an alarm, you can define the sampling method to compare
the sample value of a MIB object to either:
The configured threshold directly. This sampling is similar to a gauge,
•
recording the value as it fluctuates up and down (see
The previous sampling, and then their difference is compared to the
•
configured threshold. This sampling is similar to a counter, recording the
value that constantly increases (see
Absolute sampling compares the sample value to the configured threshold. For
example, if you want to know when 30,000 service connections occur on the CSS
during a sample interval, configure the apSvcConnections MIB object with
absolute sampling. The apSvcConnections object is the current number of
connections on a service. To define an absolute sampling, enter:
(config-rmonalarm[1])# sample-type absolute
Delta sampling (the default sampling method) compares the current sample value
with the previous sample and compares their difference to the configured
threshold. For example, if you want to know when the number of content rule hits
increase by 100,000 as compared to its previous sampling, configure the
apCntHits MIB object with delta sampling. apCntHits is an ever-increasing count
of hits.
Figure 6-3).
Cisco Content Services Switch Administration Guide
Configuring an RMON Alarm
Figure 6-2).
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