Threshold Crossing Alerts - Cisco ASR 5000 Series Administration Manual

Femto Network Gateway Overview
The system supports the configuration of up to four sets (primary/secondary) of receivers. Each set can be configured to
collect specific sets of statistics from the various schemas. Statistics can be pulled manually from the system or sent at
configured intervals. The bulk statistics are stored on the receiver(s) in files.
The format of the bulk statistic data files can be configured by the user. Users can specify the format of the file name,
file headers, and/or footers to include information such as the date, system host name, system uptime, the IP address of
the system generating the statistics (available for headers and footers only), and/or the time that the file was generated.
When the Web Element Manager is used as the receiver, it is capable of further processing the statistics data through
XML parsing, archiving, and graphing.
The Bulk Statistics Server component of the Web Element Manager parses collected statistics and stores the information
in the PostgreSQL database. If XML file generation and transfer is required, this element generates the XML output and
can send it to a northbound NMS or an alternate bulk statistics server for further processing.
Additionally, if archiving of the collected statistics is desired, the Bulk Statistics Server writes the files to an alternative
directory on the server. A specific directory can be configured by the administrative user or the default directory can be
used. Regardless, the directory can be on a local file system or on an NFS-mounted file system on the Web Element
Manager server.
Important:
Statistics" chapter of the System Administration Guide.

Threshold Crossing Alerts

Thresholding on the system is used to monitor the system for conditions that could potentially cause errors or outages.
Typically, these conditions are temporary (i.e., high CPU utilization or packet collisions on a network) and are quickly
resolved. However, continuous or large numbers of these error conditions within a specific time interval may be
indicative of larger, more severe issues. The purpose of thresholding is to help identify potentially severe conditions so
that immediate action can be taken to avoid and/or minimize system downtime.
The system supports threshold crossing alerts for certain key resources such as CPU, memory, IP pool addresses, and so
on. With this capability, the operator can configure a threshold on these resources whereby, should the resource
depletion cross the configured threshold, an SNMP trap would be sent.
The following thresholding models are supported by the system:
• Alert: A value is monitored and an alert condition occurs when the value reaches or exceeds the configured high
threshold within the specified polling interval. The alert is generated, then generated and/or sent again at the
end of the polling interval.
• Alarm: Both high and low thresholds are defined for a value. An alarm condition occurs when the value reaches
or exceeds the configured high threshold within the specified polling interval. The alert is generated, then
generated and/or sent again at the end of the polling interval.
Thresholding reports conditions using one of the following mechanisms:
• SNMP Traps: SNMP traps have been created that indicate the condition (high threshold crossing and/or clear)
of each of the monitored values. Generation of specific traps can be enabled or disabled on the chassis,
ensuring that only important faults get displayed. SNMP traps are supported in both Alert and Alarm modes.
OL-24872-01
For more information on bulk statistic configuration, refer to the "Configuring and Maintaining Bulk
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