Examples 393

5Repeat steps 1 – 4 for each of your core links.

Using these graphs you can see the trend of link utilization over the past two years. This should help you estimate how utilization will continue to develop in the near future.

If you need to perform a more detailed trend analysis for a link, you can click the appropriate hot-link below the Utilization graph to export the data behind the yearly graph in CSV format. You can then import the data into an application such as a spreadsheet to perform further analysis.

Figure 196 Trend of Link Utilization

In this example you can see that the link utilization is on an upwards trend and, based on its current rate of growth you can expect the utilization rate to reach 80% within the next three months. Based on this you may decide that this link will require upgrading.

Web server analysis You wish to see how your Web server is coping with demand and whether it will require replacing or upgrading. To do this:

1Locate your Web server in the map.

2Select it.

3Launch the historical report for the Web server by selecting the Monitoring > Historical Report menu option.

4Scroll down the report to the daily graph for HTTP response time and examine it.