All examples in this section are based on the inheritance chain Network View -> Network Container -> Network -> Range
-> Host/Fixed Address/Reservation, in which network view is at the top level and host, fixed address and reservation at the bottom of the inheritance chain.

Example 1

When you add an extensible attribute to the top object, the inheritance state is set to No Parent. For example, if you add a new inheritable extensible attribute, Building, to a network view, the inheritance state of this extensible attribute is set to No Parent for the network view.

Example 2

When you add an extensible attribute Site to the parent object Network that has a descendant Range, you can define Site as inheritable and add it to the Network. The descendant, Range, may or may not have the same extensible attribute. Infoblox displays a list of options that lets you either inherit the value or retain or override the existing value of the extensible attribute at the descendant level. Another option is to inherit the value of Site, only if the value for this attribute in Range is same as that in Network. You can also decide if Range should acquire the same value for Site, if it is not defined for Range. This change can be inherited by the descendants of Range.
Depending on your configuration, the inheritance state of the extensible attribute can display Inherited, Overridden or Not Inherited. If the object is at the top of the inheritance chain (Network View), then the inheritance state is not displayed. The inheritance state is set to No Parent only if an object has a parent, but the parent does not have the inherited extensible attribute.

Example 3

Examples in this section show different results when you add a new inheritable extensible attribute to an object located at the top or in the middle of the inheritance chain based on the following:

Example 3.1:  Add an extensible attribute Region with value DEF to 10.0.0.0/8

You select the following options for the existing extensible attribute:

• For descendants that already have this extensible attribute, the existing extensible attribute will always be set to Inherit.
• For descendants that do not have this extensible attribute, the descendants will inherit this extensible attribute.

Result:

Example 3.2:   Add an extensible attribute Region with value DEF to 10.0.0.0/8

You select the following options for the existing extensible attribute:

• For descendants that already have this extensible attribute, the existing extensible attribute will always be set to Override.
• For descendants that do not have this extensible attribute, the descendants will not inherit this extensible attribute (extensible attribute is set to Do not Inherit).

Result:

Example 3.3: Add an extensible attribute Region with value DEF to 10.0.0.0/8 8

You select the following options for the existing extensible attributes:

• For descendants that already have this extensible attribute, the existing extensible attribute will always be set to Inherit.
• For descendants that do not have this extensible attribute, the descendants will not inherit this extensible attribute (extensible attribute is set to Do not Inherit).

Result:

Example 4

Examples in this section show different results when you remove an existing inheritable extensible attribute from an object located at the top or in the middle of the inheritance chain based on the following:

Example 4.1:  Remove extensible attribute Region with value DEF from 10.0.0.0/8

You select the following option for the existing extensible attribute:

• Remove extensible attributes with inheritance state set to Inherited. Extensible attributes with the state set to Overridden are not removed.

Result:

Example 4.2: Remove extensible attribute Region with value DEF from 10.0.0.0/8 You select the following option for the existing extensible attribute:

• Preserve all descendant extensible attributes, whether the state is set to Inherited or Overridden. Result:

Example 5

Examples in this section show different results when you remove parent object based on the following:

Example 5.1: Removing object 10.0.0.0/8 from the parent level You select the following option for the existing extensible attribute:

• Remove extensible attributes with the inheritance state set to Inherited. Extensible attributes with the state set to Overridden are not removed.

Result:

Example 5.2: Removing object 10.0.0.0/8 from the parent level
You select the following option for the existing extensible attribute on descendants:

• Preserve all extensible attributes on the descendant.

Result:

Example 5.3: Remove object 10.10.0.0/16 from the parent level
You select the following option for the existing extensible attribute on descendants:

• Remove extensible attributes with the inheritance state set to Inherited. Extensible attributes with the state set to Overridden are retained.

Result:

Example 6
Examples in this section show different results after you add an object in the middle of the inheritance chain based on the following:

Example 6.1: Adding object 10.10.0.0/16 without extensible attributes You select the following option for the existing extensible attribute:

• Retain values if the extensible attribute already exists, and inherit the attribute from the parent object if it does not exist.

Result:

Example 7
Examples in this section show different results after you modify inheritable extensible attributes with multiple values based on the following:

Example 7.1: Adding extensible attribute Region with value GHI to 10.0.0.0/8 You select the following option for the existing extensible attributes:

• The descendants that already have this extensible attribute will inherit the value from the parent object.

Result: Multiple values will be replaced with the single inherited value.

Example 7.2: Adding extensible attribute Region with value GHI to 10.0.0.0/8 You select the following option for the existing extensible attributes:

• The descendants that already have this extensible attribute will override the value.

Example 8

Examples in this section show different results after you modify existing inheritable extensible attribute of an object, but you do not have required permission to modify some descendants. For information about admin permissions, see About Administrative Permissions.

Example 8.1: Removing object 10.0.0.0/8
You select the following option for the existing inheritable extensible attribute:

• Retain extensible attribute values on descendants that are inherited from this parent object.

Result:

Example 8.2: Removing object 10.0.0.0/8
You select the following option for the existing inheritable extensible attribute:

• Remove extensible attribute values from descendants that are inherited from this parent object.

The appliance displays an error message when you remove an extensible attribute that is associated with a descendant for which you do not have required permission.
Result:

Example 9

Examples in this section show different results after you join multiple networks, based on the following:

Example 9.1: Joining networks 10.0.0.0/8 with 10.1.0.0/16
You select the following option for the existing extensible attribute:

•  Join networks 10.0.0.0/8 with 10.1.0.0/16.

Result:

Example 9.2: Joining networks 10.0.0.0/8 with 10.2.0.0/16
You select the following option for the existing extensible attribute:

• Join networks 10.0.0.0/8 with 10.2.0.0/16.