Threshold Crossing Alerts Support - Cisco ASR 5000 Administration Manual

RADIUS-based Enhanced Wireless Access Gateway Overview
The system can be configured to collect bulk statistics (performance data) and send them to a collection server (called a
receiver). Bulk statistics are statistics that are collected in a group. The individual statistics are grouped by schema.
For the list of supported schema and information on how to configure them, refer to the Enhanced Wireless Access
Gateway Configuration chapter.
The system supports the configuration of up to four sets (primary/secondary) of receivers. Each set can be configured
with to collect specific sets of statistics from the various schema. 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 are configurable, operators 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 only for headers and footers), 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 subscriber 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 in the System Administration Guide.

Threshold Crossing Alerts Support

Thresholding on the system is used to monitor the system for conditions that could potentially cause errors or outage.
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 minimize and/or avoid system downtime.
There are no R-eWAG- or IPSG-specific thresholds available. However, thresholds for generic total/active sessions, call
setup/failure, license-level, system resource utilization like port/CPU, and others work with R-eWAG. With this
capability, operators can configure threshold on these resources whereby, should resource depletion cross the configured
threshold, an SNMP Trap will 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 at the end of
the polling interval.
 Alarm: Both high and low threshold 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 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.
For more information on bulk statistic configuration, refer to the Configuring and Maintaining Bulk
Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide ▄
Feature Description ▀
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