10.4.1.1.
Statistics group
Statistics group was first in group RMON, each sub network basic statistical information statistics
statistical monitoring.At present, only the network equipment’s interface interface can be monitoring,
statistics. The group contains an Ethernet statistics, statistical content including discarded packets,
broadcast packets, CRC error, size block, conflicts, etc.
10.4.1.2.
History group
The history group is the second group in the RMON, historical groups regularly collecting network
statistics, and recorded for later processing. It contains two group:
HistoryControl Group
：
Used to set the sampling interval, sampling the data source control
information.
EthernetHistory Group
：
Provides network traffic, packet error, broadcast packets, utilization and the
number of collisions and other statistical information of historical data for the administrator.
10.4.1.3.
Alarm group
The alarm group is the third groups in the RMON,At specified time intervals to monitor a specific
MIB(Management Information Base)object
，
When the MIB object value exceeds the upper limit of a
set or below the lower limit value of a set, will trigger the alarm.Alerts are treated as events to handle,
the handling of events to log or sending SNMP Trap.
10.4.1.4.
Event group
The event group is the ninth groups in the RMON,determine the result of the alarm events, processing
behavior is to produce a log record or an SNMP Trap.
10.4.2. Configure RMON
10.4.2.1.
Configure event group
You can use the following command to add a table statistics.
Statistics of the series of products the current version only
supports Ethernet interface.
The index value should be an integer between 1-65535.
Command
Function
Switch(config-if)#
rmon collection stats
index
[
owner
ownername]
Add a covariance item
Switch(config-if-gigabitEthernet-0/1)#
no rmon
collection stats
index
Delete a covariance item