Cisco Systems OL-11291-01 manual Setting IPM Database Preferences, Edit Baseline Window

Chapter 4 Modifying IPM Components

Setting IPM Database Preferences

To edit the baseline:

Step 1 Select Edit > Baseline from the IPM Main Window.

The Edit Baseline window (Figure 4-9) appears.

Figure 4-9 Edit Baseline Window

Step 2 In the Enter New Baseline field, enter a percentage by which to increase the latency threshold. The valid range is 1 to 999 (percent). The default is 20 (percent).

For example, if the current average latency is 100 milliseconds and you specify a baseline of 50, the new rising threshold is 150 milliseconds (50% above the current average latency), and the falling threshold is 50 ms (50% below the current average latency).

Step 3 Click OK.

The latency threshold is increased by the specified baseline percentage. The change is propagated to all Running statistical collectors.

On IPM servers with a large number of collectors, the IPM client can seem unresponsive while the baseline is being updated. This is due to the high volume of messages being received by the client during this time.

Note IPM does not automatically refresh open statistics windows to reflect the new baseline. To display the new baseline, close the statistics window and open it again.

For more detailed information about the Edit Baseline window, see the “Edit Baseline Window” topic in the online help.

Setting IPM Database Preferences

For collectors that are using a statistical operation, IPM gathers network performance and error statistics from the source router once every hour and stores the data in the IPM database. The collected hourly data is used to calculate daily, weekly, and monthly data.

By default, IPM stores the collected data for the following periods:

•Hourly data for up to 32 days

•Daily data for up to 180 days

•Weekly data forever

•Monthly data forever

	User Guide for Internetwork Performance Monitor
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