Reporting › Interface Context Views › Top Deviations from Normal - IP SLA

Top Deviations from Normal - IP SLA

The Top Deviations from Normal views compare actual values from the selected time frame to a calculated "normal" value and display those values that deviated the most from that normal value.

What is considered to be "normal" is based on the calculated baseline average. The way the baseline is calculated varies by the registered data source. Use these views to quickly identify places where performance has changed.

IP SLA operations enable you to measure network performance by simulating network data and services on many Cisco devices. Some CA data sources can collect and report on data from Cisco IP SLA operations.

The Top Deviations from Normal - IP SLA view provides the following information for the selected device:

Metric

Is an operation type for an IP Service Level Agreement test. Select one of the following, or select All to view all metrics. Metrics are shown for the reporting group with the highest deviation from the normal value.

• ICMP Echo. The average round-trip delay from the source router to the destination device.
• Path Echo. The average round-trip delay, measured hop-by-hop.
• UDP Echo. The average round-trip delay for UDP traffic.
• TCP Connect. The average amount of time to connect to a target device with TCP.
• HTTP. The average round-trip time to retrieve a web page.
• DNS. The average amount of time for a DNS lookup.
• Jitter. The average amount of delay in the arrival times of data packets.
• DLSw. The average amount of time for Data-Link Switching.
• DHCP. The average round-trip time to retrieve an IP address from a DHCP server.

Device

Identifies the device whose data is reflected in the view. If an administrator defined an alias for the device item, the alias is displayed. Otherwise, the discovered device name is displayed.

Name

Is the name of the component that was the target of IP SLA testing.

Average [Metric]

Is the average value of the metric for the selected time period.

Average Baseline [Metric]

Is the calculated average baseline value. "Normal" is based on the calculated baseline average.

Percent Deviation

Is the value of the metric calculated as a percentage above or below the normal value.