H3C Technologies H3C S3100 Series Switches - Manual (Page 458)

Operation Manual – SNMP and RMON
H3C S3100-52P Ethernet Switch 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 network device. 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
2.2.1 Prerequisites
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”.
2.2.2 Configuring RMON
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.