Statistics management in the NFM-P
Overview
The NFM-P provides a scalable platform for reliable statistics collection from managed NEs, and also provides statistics for monitoring NFM-P system processes and functions.
Depending on the statistics type, you can do the following with the collected data:
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Use an OSS client to retrieve the data for processing and analysis.
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Use the NSP Analytics to generate comprehensive, customized reports for traffic monitoring and trend analysis.
Note: Before you configure statistics collection, you must consider the NFM-P resource constraints; see NFM-P statistics scalability for general information, and the NSP Planning Guide for release-specific scalability guidelines.
The NFM-P can collect the following statistics types:
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performance statistics—collected by polling NE MIBs and transferred to the NFM-P using SNMP, or, for wireless PM counters, transferred from NEs to the NFM-P using FTP
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accounting statistics—collected in files on NEs and transferred to the NFM-P using FTP or SCP
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flow statistics—forwarded by NEs to a target file server for retrieval by an OSS, or to the NFM-P for use by the NSP Analytics.
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server performance statistics—collected by NFM-P system processes and stored in the NFM-P database
See NFM-P statistics types for more information about each statistic type.
Policy-based collection
To collect statistics such as NE performance or accounting statistics, the NFM-P uses policies that specify the following:
From the Statistics tab of an object properties form, you can use the following buttons to perform an on-demand collection of network or server performance statistics:
Note: On-demand statistics collection may yield inconsistent results the first time it is run against an object. To obtain valid results, you must run the on-demand statistics collection more than once.
Statistics are stored for a configurable retention period that is defined in an NFM-P statistics policy. When the retention period elapses, the statistics are removed. However, statistics that are collected for real-time display are not stored; the statistics are available only for the duration of the current session, and only for the operator that initiates the session.