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CLI-based Configuration Guide - Network Management and Monitoring

AR100, AR120, AR160, AR1200, AR2200, AR3200, and AR3600 V300R003

This document provides the basic concepts, configuration procedures, and configuration examples in different application scenarios of the network management feature supported by the device.

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Configuring RMON Statistics Collection

Configuring RMON Statistics Collection

Context

RMON statistics include Ethernet statistics and history statistics. The Ethernet and history statistics collections apply to different scenarios:

  • To keep on collecting traffic statistics on an Ethernet interface, configure Ethernet statistics collection. Ethernet statistics include the number of network collisions, CRC error packets, undersized (or large) data packets, broadcast packets, multicast packets, received bytes, and received packets.
  • To store the statistics on the specified interface for later retrieval, configure history statistics collection. History statistics include bandwidth usage, number of error packets, and total number of packets.

Procedure

  • Configure Ethernet statistics collection.
    1. Run system-view

      The system view is displayed.

    2. Run interface interface-type interface-number

      The interface view is displayed.

    3. Run rmon-statistics enable

      RMON statistics collection is enabled on an interface.

    4. Run rmon statistics entry-number [ owner owner-name ]

      A statistics table is created and an entry is added to the table.

  • Configure history statistics collection.
    1. Run system-view

      The system view is displayed.

    2. Run interface interface-type interface-number

      The interface view is displayed.

    3. Run rmon-statistics enable

      RMON statistics collection is enabled on an interface.

    4. Run rmon history entry-number buckets number interval sampling-interval [ owner owner-name ]

      A history control table is created and an entry is added to the table.

    NOTE:
    • As recommended by the RMON standard, each monitored interface should have more than two history control entries. One entry is sampled every 30 seconds while another entry is sampled every 30 minutes.
    • The short sampling interval enables a monitor for sudden changes of traffic modes, and the long sampling interval is applicable if the interface status is relatively stable.
    • Each history control table stores 10 records. When more than 10 records are generated, the old ones are overwritten.
    • To reduce the impact of RMON on system performance, the sampling interval of the history control table should be longer than 10 seconds. In addition, an interface cannot be configured with too many entries for the history control table and alarm table.
    • If RMON statistics collection is not enabled on an interface, the number of records in the RMON statistics table and history table are 0.

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Updated: 2019-03-06

Document ID: EDOC1100069336

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