Rmon Group 3-Alarms; Alarm Mib Objects - HP 438031-B21 - 1:10Gb Ethernet BL-c Switch Application Manual

2. Configure RMON History Group parameters.
3. Click Submit.
4. Apply, verify, and save the configuration.
RMON group 3—alarms
The RMON Alarm group allows you to define a set of thresholds used to determine network performance.
When a configured threshold is crossed, an alarm is generated. For example, you can configure the
switch to issue an alarm if more than 1,000 CRC errors occur during a 10-minute time interval.
Each Alarm index consists of a variable to monitor, a sampling time interval, and parameters for rising
and falling thresholds. The Alarm group can be used to track rising or falling values for a MIB object. The
object must be a counter, gauge, integer, or time interval.
Use the /cfg/rmon/alarm x/revtidx or /fevtidx to correlate an alarm index to an event index.
When the alarm threshold is reached, the corresponding event is triggered.

Alarm MIB objects

The most common data types used for alarm monitoring are ifStats: errors, drops, bad CRCs, and so on.
These MIB Object Identifiers (OIDs) correlate to the ones tracked by the History group. An example of an
ICMP stat is as follows:
1.3.6.1.2.1.5.1.0 – mgmt.icmp.icmpInMsgs
The last digit (x) represents the interface on which to monitor, which corresponds to the interface number,
or port number, as follows:
1-256 = IF 1-256
257 = port 1
Remote monitoring
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