Owner's manual

CHAPTER 5: ADDING DEVICES AND DEVICE GROUPS 61
description only requires a single rule, then simply 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 only needs to satisfy 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 first before the
rest of the description is compared to the node. Parenthetical groups can be nested inside
another parenthetical group.
For example: If you want to describe devices that belong to the engineering department,
create a rule that says Department = Engineering. This will become Rule0. Then
type Rule0 in the Short Expression field.
Another example: If you want to describe a group of devices that belong to the engineering
department, or are located in Philadelphia, and specify that all of the machines must have 1
GB of memory you need to start by creating three rules. Department = Engineering
(Rule0) Location = Philadelphia (Rule1) Memory = 1GB (Rule2).These rules
need to be arranged in relation to each other. Since the device can either belong to the
engineering department or be located in Philadelphia, use the OR operator, |, to join the two:
Rule0|Rule1. We will make this comparison first by enclosing it parentheses:
(Rule0|Rule1). Finally, since the devices must both satisfy this comparison AND
contain 1GB of memory, we use the AND connector, &, to join this section with Rule2:
(Rule0|Rule1)&Rule2. Type this final expression in the Short Expression field.
• If you want to remove a row from the table, select the row, and then click the Remove
Selected Row icon
.
• If you want to see the list of devices whose parameters follow the rules you have defined,
click View Devices.
f. Click Validate when a description has been written in the Short Expression field. If the
description is formed incorrectly, you will receive a warning. If the description is formed
correctly, a normalized form of the expression will appear in the Normalized Expression
field.
g. Click View Devices to see what nodes satisfy this expression. A Devices in Device Group
Results window will appear displaying the devices that will be grouped by the current
expression. This can be used to check if the description was correctly written. If not, you can
return to the rules table or the Short Expression field to make adjustments.
h. Check the Create Full Access Policy for Group checkbox if you want to create a policy for
this device group that allows access to all devices in the group at all times with control
permission.
i. If you want to add another device group, click Apply to save this group, then repeat the steps
in this section to add additional device groups. If you have finished adding device groups,
click OK to save this group and exit the Device Group: New panel.