Using the Filter Library for Active Interface monitors in Roles

Interface filtering applied to a role\sub role during discovery prevents the active monitoring of less critical interfaces such as would be attached to workstations. The article describes the proper configuration of Advanced filtering of interfaces based upon the names.

Jul 30, 2020
Knowledge

Title

URL Name

using-the-filter-library-for-active-interface-monitors-in-roles

Article Number

000194274

Environment

Network Monitoring-WhatsUp Gold--Discovery, interface Active monitoring and Roles

Question/Problem Description

I need assistance modifying the Switch device role so that it only adds interface monitors for certain interfaces. I added a custome filter called Core Uplinks with an interface description including core but all active interfaces are still added to monitoring. All active interfaces are added to monitoring when interface is not in the monitor list so it looks like its taking some default behavior and ignoring the settings.

Steps to Reproduce

Clarifying Information

Error Message

Defect Number

Enhancement Number

Cause

Resolution

Add/Edit an Interface Filter

Roles can be pre-configured to use Active Monitors when conditions you select match or evaluate to true. You can filter on operational state, administrative state, regular expression matches, and much more.

Important: While Active Interface Monitor Filters help to identify which roles warrant a particular monitor, Role Monitor Apply Rules (Apply Always, Check Support) have a deciding influence.

Filter Groups

Single or combined filter groups can be used. For example, you can simply filter on any combination of two operational states (let's say Operationally up and Administratively down) within a single group. Or, for example, you could use that criteria in combination with another group, let's say Interface Type, where Interface Type equals Fast Ethernet or Ethernet. Values within groups are ORed together (any can be true) but if you have more than one group, group expressions evaluate together as ANDs (criteria for each group must be true to be considered a match).

Available Filter Group...	Applies Filters
Operational Status	Match a single or any of the selected operating states.
Interface Type	Look for the SNMP MIB ifType value as defined by https://www.iana.org/assignments/ianaiftype-mib/ianaiftype-mib.
Port Index	Match the physical port position on the device.
Interface Speed	Network interface speed. (This value is typically the nominal speed of the network interface.)
Regular Expression	Match all or a substring of the derived or configured interface name or description.

Example

WhatsUp Gold interprets the following Monitor Filter and delegates monitors to:

Given the condition that any device's status (in this case detected Operational Status) has an operational status of "link up" (Operationally up)...
Delegate monitoring to any of the selected Interface Types (Ethernet, Fast Ethernet, Gigabit Ethernet)

***On the Advanced Filtering if you choose the "Contains exact phrase" that will need the full text string of what you want to match on.

Example:

The interface name you want to match on contain the word "core" but it's complete name is core1-Lap.sgh, it you use the Contains Exact Phrase it won't match because core is not the exact phrased.

The correct option is to use "Contains regular expression" this will allow you to filter on part of the phrase or name such as core.

Workaround

Notes

Keyword Phrase

Last Modified Date

7/19/2021 8:18 PM