Avaya Configuring BayStack Remote Access Instrukcja Użytkownika Strona 105

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Configuring an Ethernet Data Collection Module
117341-A Rev. A 6-17
In the following sections, the word configuration means the set of control tables
for a group. For example, a Matrix configuration includes only the
matrixControlTable. Note that you can create more than one configuration for
some RMON groups. For example, you can create more than one History
configuration, allowing you to specify different intervals for sampling statistics.
Interoperability Issues and Memory Use for RMON Groups
This section describes the issues you should consider concerning each RMON
group’s memory requirements.
Statistics Group
When you enable the DCM, the RMON agent automatically creates a Statistics
configuration that records data for each network interface. Through your RMON
network management application, you can create as many Statistics
configurations as memory permits, up to the RMON limit of 65,535.
If you create multiple configurations, it is possible to collect the same set of
statistics for the same interface in multiple data tables. The absolute values of
those statistics may vary from table to table, because the baseline of each statistics
counter occurs when you create a configuration. You may prefer, however, to use
only one Statistics configuration to conserve memory for other RMON groups.
You need 200 bytes of memory for each Statistics configuration.
History Group
When you enable the DCM, the RMON agent automatically creates a History
configuration that collects History data at two intervals. The first configuration
provides short-term history by sampling statistics every 30 seconds and holding
up to 50 samples (in RMON terms, buckets). The second configuration provides
long-term history by sampling statistics every 30 minutes and holding up to 50
buckets.
Through your RMON network management application, you can create as many
History configurations as memory permits, up to the RMON limit of 65,535.You
can also set the number of buckets that a particular History configuration uses to
as many as memory permits. If you request more buckets than memory permits,
the agent allocates enough buckets to fill available memory.
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