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1. Open the Settings icon –> Setup –> Collection and Groups –> Groups.
2. Open the Add Device Group dialog to Click Add to create a top-level, sibling, or child extended group.
3. In the Parent ID field, NetMRI automatically sets the ID of the parent group. It is "0" for a top-level or sibling group.
4. Enter a Name for the group. The group name is shown in all group-related displays and reports, so the group name should be meaningful without being too long.

5. Define a Membership Criteria regular expression. For more information, see Understanding Device Group Membership Criteria.

   Note
   title Note
   Infoblox recommends using regular expressions for refining the membership in device groups. The topic Understanding Device Group Membership Criteria provides the information you need to understand and define simple regular expressions for device groups.

   
   

6. If you want the device group to include collections of discovered non-network devices, select Include non-network devices. Leaving this setting unselected prevents non-network devices from occupying valuable licensing space.
7. Next to Type, click Extended.
8. Rank: Displays the Ranking value as the default sort order. For more information, see Ranking Device Groups. Ranking value is used as the default sort order for all group-related tables, with the highest rank shown first. Rank is also used to determine the individual device settings controlling processing for each device.
9. Polling Frequency: Allows you to slow down or speed up the device polling frequency relative to the default NetMRI setting. For more information, see the following section, Setting Polling Frequency for a Device Group.
10. Select from the following:

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1. For Switch Port data Collection, choose from the following:

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7. Polling Frequency: Allows you to slow down or speed up the device polling frequency relative to the default NetMRI setting. You can set either global or group-level frequency here. For more information, see Modifying Polling Frequency for a Device Group.

Select from the following:

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1. • Use Global Settings: Select this to enable the device group to inherit global settings for switch port data collections. You can find the global settings in Settings icon –> Setup –> Collection and Groups –> Global –> Switch Port Management. For more information, see Global Switch Port Management Polling Settings.
   • Specify Polling Interval: Overrides the global polling interval with a custom polling interval for the current device group. You can define an interval of 1-60 Minutes or 1-24 Hours in the fields that appear.
   • Specify Schedule: Overrides the global scheduled polling setting with a custom schedule for the current device group. Existing schedules may appear in the list or, click Add New Schedule to create a new polling schedule instance. Choose a Recurrence Pattern of Once, Hourly, Daily, Weekly, or Monthly. In all cases, you must choose an Execution Time and select at least one day of the week check box.
   • Poll Now: Click to execute switch port polling on the device group right after it is created.

   • Disable: Completely disables switch port polling for the device group.

9. Activate the processing options for the new Extended group:

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12. Click Save & Close or Save & New.

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Setting Polling Frequency for a Device Group Setting Polling Frequency for a Device Group

Setting Polling Frequency for a Device Group

You can set global or individual polling frequency for a device group. You do so by specifying a polling frequency modifier. This is a coefficient by which the default NetMRI setting is multiplied. The higher the coefficient, the more frequently devices in the current group are polled. 

The default NetMRI polling frequency is located in Settings icon –> Setup –> Device Collection Status. The global polling frequency modifier is located in Settings icon –> General Settings –> Advanced Settings –> Data Collection –> Polling Frequency Modifier.

You can set values between 0.5 and 2 for the global or group-level polling frequency modifier. Interpret the values as follows:

• 0.5: makes polling twice slower.
• 1: means same polling frequency as the default setting.
• 2: makes polling twice faster.

As NetMRI recalculates polling frequency every 10 minutes, the new polling frequency is applied to the group not later than 10 minutes after you specified it.

The polling frequency modifier affects SNMP credentials guessing. For example, by default it happens once a day. With the polling frequency modifier, you can make it happen twice a day or once in two days. This setting does not affect the frequency of CLI credentials guessing or config collection.

To set polling frequency for a device group, complete the following:

1. Open the Settings icon –> Setup –> Collection and Groups –> Groups.
2. Click Add for a new group or open an existing extended device group for editing.
3. In Polling Frequency, select one of the following:
   • Use Global Settings: Select this to enable the device group to inherit the global polling frequency modifier setting.

   • Specify Polling Frequency: Allows you to set individual polling frequency for the current device group. 
     If you selected Specify Polling Frequency, the Polling Frequency Modifier field appears.

4. In the Polling Frequency Modifier field, specify the coefficient that modifies the device group polling frequency relative to the default NetMRI setting.

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Additional Device Group Operations Additional Device Group Operations

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Additional Device Group Operations

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