User guide

8-12 ExtremeWare EPICenter Software Installation and User Guide
The Grouping Manager
Adding a Resource as a Child of a Group
A group’s children are individual resources or subordinate groups that will be
manipulatedormanagedtogether.Aresourceisplacedintoagroupasitiscreated—
either the root-level group, or the group that was selected when it was created. However,
because a resource can be a member of multiple groups,you may wish to add an existing
resourcetoanadditionalgroup,ormoveittoadifferentgroup.Toaddaresourcetoa
group, you select the resource from a list of the resources that are currently defined in the
EPICenterdatabase.
You can add individual resources as children of a group, or you can add groups as
children. You cannot add an ancestor group as a child of one of its subordinate groups.
When you add a group as a child of another group, all members of the sub-group (its
children) are considered members of the higher level (ancestor) group. As membership in
thesub-groupchanges,sodoesthemembershipinthehigherlevel(ancestor)group.This
can have important effects when a group is used by another EPICenter module. For
example, suppose you create group “A” that contains two groups of hosts “HostsA” and
“HostsB”, and then use group Ain defining access list policies through the Policy
Manager. The Policy Manager will generate access list rules for traffic related to all the
hosts in groups HostsA and HostsB. If you subsequently change the membership of
HostsB,andauto-configuration of policies is enabled in the PolicyManager, the QoS rules
that define the access lists will automatically be recomputed and reconfigured. (See the
ExtremeWare EPICenter Policy Manager Software User Guide for more information on this
optional module).
Adding resourcesto a group as individuals isamore staticrelationship—resources remain
aschildrenuntiltheyareexplicitly removedfromthegroup (ordeletedfromthe EPICenter
database).
To add a resource or group of resources to a higher-level group, do the following:
1 IntheComponentTree,selectthe group to whichyouwantto add the resource,so that
the group’s information is displayed in the Resource Details view.
2 Click the tab labeled Children to display the list of children belonging to this group.
3 Clickthe Add button atthe bottom of the list ofChildren to display theAdd Resources
to Group pop-up dialog, as shown in Figure 8-3.