Introduction To Rmon; Rmon Suported By The S2700 - Huawei Quidway S2700 Series Configuration Manual

Quidway S2700 Series Ethernet Switches
Configuration Guide - Network Management

7.1 Introduction to RMON

This part describes working principles of RMON.
RMON
RMON is implemented based on the Simple Network Management Protocol (SNMP)
architecture, and is compatible with the existing SNMP framework. There are two concepts
involved in RMON, namely, the Network Management Workstation (NM Station) and the agent.
A RMON agent collects statistics of various traffic in a network, including the number of packets
on a network segment within a period and the number of correct packets sent to a host.
Compared with SNMP, RMON monitors remote network devices more efficiently and actively.
It provides an efficient solution to monitor the running of sub-networks, which reduces the
communication traffic between the NM Station and the agent. Large-sized networks can thus be
managed in a simple and effective manner.
RMON allows multiple monitors. It collects data in the following ways:
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Currently, the S2700 implements the monitoring and statistics collection function only on the
Ethernet interfaces of network devices.

7.2 RMON Suported by the S2700

This part describes the support for RMON on the S2700.
Features of RMON
The S2700 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 S2700 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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Use a dedicated RMON Probe.
The NM Station obtains management information directly from the RMON Probe and
controls network resources. This ensures that the NM Station can obtain overall information
on the RMON MIB.
Embed a RMON agent into a network device (a switch for example) to enable the device
to be of the RMON Probe capability.
The NM Station uses the basic SNMP commands for exchanging data with the RMON
agent and collecting the network management information. This process is restricted by
device resources and hence the NM Station collects only information on four groups (alarm,
event, history, and statistics) and not the complete information on the RMON MIB.
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.
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