Rmon And Rmon2 Suported By The S9300 - Huawei Quidway S9300 Configuration Manual - Network Management

Quidway S9300 Terabit Routing Switch
Configuration Guide - Network Management
As defined in RFC 2021, RMON2 contains the following MIB groups: protocolDir,
protocolDist, addressMap, nlHost, nlMatrix, alHost, alMatrix, usrHistory, ProbeConfig, and
rmonConformance.

2.2 RMON and RMON2 Suported by the S9300

This part describes the support for RMON and RMON2 on the S9300.
Features of RMON
The S9300 implements RMON by embedding agent modules to network devices to form a
complete system with other modules. The RMON NM Station is completely compatible with
the SNMP NM Station; so, the administrator can handle it properly without additional training.
RMON in the S9300 supports four groups, namely, statistics, history, alarm, and event, as
defined in RFC 2819, and a Performance-MIB defined by Huawei. The following describes each
group.
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Issue 03 (2010-09-20)
Statistic group
The statistics group collects the basic statistics of each monitored sub-network. The
statistics include date flows on a network segment, distribution of various packets, error
frames, and collisions.
The statistics group has one table: ethernetStatsTable.
NOTE
The RMON statistics result is not consistent with the output of the display interface command.
Although data is collected from the bottom layer in both the cases, the RMON information is more
comprehensive.
History group
A history group periodically collects the network state statistics and stores them for future
reference. The history group has the following tables:
– historyControlTable: is used to set the control information, such as sampling intervals.
– etherHistoryTable: provides network administrators with other history statistics, such
as the traffic on a network segment, error packets, broadcast packets, utilization, and
collisions.
Each entry in the historyControlTable corresponds to a maximum of 10 pieces of history
records in the etherHistoryTable. The previous pieces are overwritten in a circular
manner if the threshold of records in etherHistoryTable is crossed.
Alarm group
An alarm group allows predefining a set of thresholds for alarm variables (any object in
the local MIB). A monitor records logs or sends trap messages to the NM Station when the
sampled data in a certain direction crosses a threshold.
As defined in RFC 2819, the alarm function has a hysteresis mechanism to limit the
generation of alarms. If this mechanism is adopted, an alarm event is generated when the
sampled data in a direction crosses the threshold. No more events will be generated until
the sampled data in the opposite direction crosses the threshold.
The S9300 does not apply this mechanism because it will not generate the alarms for a long
period. For the S9300, the alarms are re-generated if the smapling value turns to the noraml
threshold.
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2 RMON and RMON2 Configuration
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