Administrator's Guide

3.4.3 Collapsing the SDN user window
To collapse the SDN User window, do one of the following:
• In the SDN User window, click .
• From the top banner, click .
3.4.4 Logging out of the controller
To log out of the controller UI:
• From the SDN User window, select Logout.
3.5 Alerts screen
3.5.1 About alerts
Alerts give notification of events that affect controller operation, and in some cases indicate that
some action is needed to correct a condition.
Alerts and controller teams
When controllers are operating in a team, alerts generated by any team member are visible in
the Alerts screen for all active team members.
Active, unacknowledged alerts
By default, alerts are in an unacknowledged, active state. An alert must be in an active state to
appear in the following places:
• The alert notification counter
• The Alerts as of today window
3.5.2 About alert policies
The values for the AlertManager component keys determine the alert age-out policy. The following
table describes the keys for the AlertManager component
(com.hp.sdn.adm.alert.impl.AlertManager).
DescriptionKey
Specifies the number of days an alert remains in persistent storage and remains displayed
on the Alerts screen.
trim.alert.age
Data type A number from 1 through 31
Default value 14
When true, specifies that the controller deletes alerts that have exceeded the
trim.alert.age limit.
trim.enabled
Default value true
Specifies how often, in hours, the controller is to delete alerts that have exceeded the
trim.alert.age limit.
trim.frequency
Data type A number from 8 through 168
Default value 24
Example Enter 8 to specify that the controller delete aged-out alerts every
eight hours.
3.5 Alerts screen 19