Extreme Networks ExtremeWare XOS 11.1, Руководство пользователя

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Status Monitoring and Statistics
ExtremeWare XOS 11.1 Concepts Guide
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Supported RMON Groups of the Switch
The IETF defines nine groups of Ethernet RMON statistics. The switch supports the following four of
these groups, as defined in RFC 1757:
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Statistics
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History
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Alarms
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Events
The switch also supports the following parameters for configuring the RMON agent and the trap
destination table, as defined in RFC 2021:
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probeCapabilities
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probeSoftwareRev
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probeHardwareRev
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probeDateTime
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probeResetControl
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trapDestTable
The following sections describe the supported groups, the RMON probe configuration parameters, and
the trap destination parameter in greater detail.
Statistics
The RMON Ethernet Statistics group provides traffic and error statistics showing packets, bytes,
broadcasts, multicasts, and errors on an Ethernet port.
Information from the Statistics group is used to detect changes in traffic and error patterns in critical
areas of the network.
History
The History group provides historical views of network performance by taking periodic samples of the
counters supplied by the Statistics group. The group features user-defined sample intervals and bucket
counters for complete customization of trend analysis.
The group is useful for analysis of traffic patterns and trends on an Ethernet port, and to establish
baseline information indicating normal operating parameters.
Alarms
The Alarms group provides a versatile, general mechanism for setting threshold and sampling intervals
to generate events on any RMON variable. Both rising and falling thresholds are supported, and
thresholds can be on the absolute value of a variable or its delta value.
Please note, creating an entry in the alarmTable does not validate the alarmVariable and does not
generate a badValue error message.
Alarms inform you of a network performance problem and can trigger automated action responses
through the Events group.