Details of Issue Suppression

Group-based Issue Suppression settings recognize Device Group priority settings. NetMRI suppresses an Issue for any device if the Issue Suppression is enabled for the highest-ranking device group to which the device belongs. For example, consider a device that belongs to two device groups, Firewalls, and Routing. Under Settings > Issue Analysis > By Device Groups, you will see that Firewalls is the highest-ranking device group. Should a particular Issue be suppressed in that device group, all devices participating in that group will have that Issue suppressed, regardless of the suppression settings in any lower-ranked device group to which the devices belong.

Suppressed issues continue to be analyzed internally, because the associated analysis may be looking for multiple issues. Although, they are not automatically displayed or used to compute scorecard values.

NetMRI supports two styles of issue suppression: full and partial.

• Fully suppressed issues will not appear in any issue list, nor will they be used in any network or group scorecard calculation. A specific issue can be suppressed on the Settings icon > Issue Analysis section > Suppression page.
  Doing so suppresses reporting for that issue throughout the NetMRI system.

• Partially suppressed issues are suppressed on specific devices using checkboxes in the Issue Viewer. issues can be partially suppressed through Device Groups and Interface Groups at Settings icon > Setup section > Collection and Groups > Groups tab. For groups, issue instances can be suppressed before issues are even raised for a device or interface because group settings are dynamic and dictate which issues should be suppressed.

Partially suppressed issues appear in issue lists and are used in all Scorecard calculations containing at least one unsuppressed issue detail. If all issue details are suppressed, then the issue will not appear in issue lists and will not be included in Scorecard calculations.

Partially suppressed issues can be used to temporarily ignore known problems that won’t be fixed for some time, while still tracking the problem. The issue instances are still recorded in the database and can be seen at any time by un-suppressing that instance, at which point it will appear in all past and future issues.

Scorecard values are only computed once, so any issues that are either fully or partially suppressed “at the time the scorecard is generated” are taken into consideration. If an issue is subsequently suppressed, either fully or partially, the old scorecard values will not be retroactively updated.