Configuring Rmon; Configuration Prerequisites; Configuration Procedure - 3Com 4500G Family Configuration Manual

If the count result overpasses the same threshold multiple times, only the first one can cause an alarm
event. That is, the rising alarm and falling alarm are alternate.
History group
The history group periodically collects statistics on data at interfaces and saves the statistics in the
history record table for query convenience. The statistics data includes bandwidth utilization, number of
error packets, and total number of packets.
Once you successfully create a history entry in the specified interface, the history group starts to
periodically collect statistics on packet at the specified interface. Each statistical value is a cumulative
sum of packets sent/received on the interface during a sampling period.
Ethernet statistics group
The statistics group monitors port utilization. It provides statistics about network collisions, CRC
alignment errors, undersize/oversize packets, broadcasts, multicasts, bytes received, packets received,
bytes sent, packets sent, and so on.
After the creation of a statistics entry on an interface, the statistics group starts to collect traffic statistics
on the current interface. The result of the statistics is a cumulative sum.

Configuring RMON

Configuration Prerequisites

Before configuring RMON, configure the SNMP agent as described in SNMP Configuration in the
System Volume.

Configuration Procedure

Follow these steps to configure RMON:
To do...
Enter system view
Create an event entry in the event
table
Enter Ethernet interface view
Create an entry in the history
table
Create an entry in the statistics
table
Exit Ethernet interface view
Use the command...
system-view
rmon event entry-number [ description
string ] { log | log-trap log-trapcommunity |
none | trap trap-community } [ owner text ]
interface interface-type interface-number
rmon history entry-number buckets number
interval sampling-interval [ owner text ]
rmon statistics entry-number [ owner text ]
quit
1-3
Remarks
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Optional
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Optional
Optional
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