Chapter 6: Devices, Device Groups, and Ports
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Category - Select an attribute that will be evaluated in the rule. All
categories you created in the Association Manager are available
here. If any blade chassis has been configured in the system, a
Blade Chassis category is available by default.
Operator - Select a comparison operation to be performed
between the Category and Element items. Three operators are
available: = (is equal to), LIKE (used for find the Element in a
name) and <> (is not equal to).
Element - Select a value for the Category attribute to be
compared against. Only elements associated with the selected
category will appear here (for example: if evaluating a
“Department” category, “Location” elements will not appear
here).
Rule Name - This is a name assigned to the rule in this row. It is
not editable; it is used for writing descriptions in the Short
Expression field.
4. To add another rule, click the Add New Row icon
, and then
make the necessary configurations. Configuring multiple rules will
allow more precise descriptions by providing multiple criteria for
evaluating devices.
5. The table of rules only makes available criteria for evaluating nodes.
To write a description for the device group, add the rules by Rule
Name to the Short Expression field. If the description requires only a
single rule, type that rule's name in the field. If multiple rules are
being evaluated, type the rules into the field using a set of logical
operators to describe the rules in relation to each other:
& - the AND operator. A node must satisfy rules on both sides of
this operator for the description (or that section of a description)
to be evaluated as true.
| - the OR operator. A device needs to satisfy only one rule on
either side of this operator for the description (or that section of a
description) to be evaluated as true.
( and ) - grouping operators. This breaks the description into a
subsection contained within the parentheses. The section within
the parentheses is evaluated before the rest of the description is
compared to the node. Parenthetical groups can be nested
inside other parenthetical groups.
Example1: If you want to describe devices that belong to the
engineering department, create a rule that says Department =
Engineering. This will become Rule0. Type Rule0 in the Short
Expression field.
