Operation Manual – SNMP-RMON
H3C S3100 Series Ethernet Switches Chapter 2 RMON Configuration
2-3
IV. History group
After a history group is configured, the Ethernet switch collects network statistics
information periodically and stores the statistics information temporarily for later use. A
history group can provide the history data of the statistics on network segment traffic,
error packets, broadcast packets, and bandwidth utilization.
With the history data management function, you can configure network devices to
collect history data, sample and store data of a specific port periodically.
V. Statistics group
Statistics group contains the statistics of each monitored port on a switch. An entry in a
statistics group is an accumulated value counting from the time when the statistics
group is created.
The statistics include the number of the following items: collisions, packets with cyclic
redundancy check (CRC) errors, undersize (or oversize) packets, broadcast packets,
multicast packets, and received bytes and packets.
With the RMON statistics management function, you can monitor the use of a port and
make statistics on the errors occurred when the ports are being used.
2.2 RMON Configuration
Before performing RMON configuration, make sure the SNMP agents are correctly
configured. For the information about SNMP agent configuration, refer to section
1.2
“Configuring Basic SNMP Functions”.
Table 2-1 Configure RMON
Operation Command Description
Enter system
view
system-view
—
Add an event
entry
rmon event event-entry [ description
string ] { log | trap trap-community |
log-trap log-trapcommunity | none }
[ owner text ]
Optional
Add an alarm
entry
rmon alarm entry-number
alarm-variable sampling-time { delta |
absolute } rising_threshold
threshold-value1 event-entry1
falling_threshold threshold-value2
event-entry2 [ owner text ]
Optional
Before adding an alarm
entry, you need to use
the rmon event
command to define the
event to be referenced
by the alarm entry.
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