# Request Category Trend

#### Prerequisites

The DNS statistics item has been enabled. For details, see DNS Defense Policy.

#### Function

The request category trend collects statistics on DNS request packets and displays various DNS request curves. This function allows you to monitor DNS traffic distribution on the live network.

#### Parameter

Table 1 Query parameters of Request Category Trend
Parameter | Description
--- | ---
Device | Select a device from the drop-down list.
Zone | Click , select a Zone on the Zone page that is displayed, and then click OK.
IP Address | Enter the destination IP address. Both IPv4 and IPv6 addresses are applicable. The DNS traffic destined for the IP address is queried.
Time | Click to select the start time and end time of statistics. Or you can change the time values in corresponding text boxes. The end time should be later than the start time and the interval cannot be longer than one year. If the query interval is longer than or equal to seven days and shorter than one year, statistics are collected daily. If the query interval is longer than or equal to one day and shorter than seven days, statistics are collected hourly. If the query interval is shorter than one day, statistics are collected every five minutes.

#### Example

If the device is set to DDoS-Cleaning and the Zone to All, the trend analysis results of DNS within a period of time are displayed in Figure 1.

Figure 1 Trend analysis

#### Procedure

1. Choose Report > Report > DNS Analysis.
2. Click the Request Category Trend tab.
3. Set query parameters.
4. Click Search.

   Trend analysis results of DNS are displayed.

5. Optional: Open or save the query results as files, or send queried reports to the specified email address.

   - Click to open or save the query results as PDF files. A maximum of 10,000 entries can be displayed.
   - Click to open or save the query results as EXCEL files. A maximum of 10,000 entries can be displayed.
   - Click to enter a recipient mail address and select an attachment format. Then click OK.

Parent topic: DNS Analysis

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