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Assign SNMP

The Assign SNMP page creates SNMP alerts for SNMP devices discovered using the By Network or By Agent pages. An alert is a response to an alert condition.

A SNMP set is a set of MIB objects used to monitor the performance of SNMP enabled network devices. The SNMP protocol is used because an agent cannot be installed on the device. You can assign alarm thresholds to any performance object in a SNMP set. If you apply the SNMP set to a device, you can be notified if the alarm threshold is exceeded. The following methods can be used to configure and assign SNMP sets to machine IDs.

Typically the following procedure is used to configure and apply SNMP sets to devices.

  1. Discover SNMP devices using Discovery > By Network or By Agent.
  2. Assign SNMP sets to discovered devices using Monitor > Assign SNMP. This can include quick, standard, individualized or auto learn SNMP sets.
  3. Display SNMP alarms using Monitor > SNMP Log or Dashboard List.

The following additional SNMP functions are available and can be used in any order.

Individualized SNMP Sets

You can individualize SNMP set settings for a single machine.

  1. Select a standard SNMP set using the <Select Monitor Set> drop-down list.
  2. Assign this standard SNMP set to a SNMP device. The SNMP set name displays in the SNMP Info / SNMP Set column.
  3. Click the individualized monitor set icon in the SNMP Info / SNMP Set column to display the same options you see when defining a standard SNMP set. An individualized SNMP set adds an (IND) prefix to the name of the SNMP set.
  4. Make changes to your new individualized SNMP set. These changes apply only to the single SNMP device it is assigned to.

    Note: Changes to a standard SNMP set have no affect on individualized SNMP sets copied from it.

Auto Learn Alarm Thresholds for SNMP Sets

You can enable Auto Learn alarm thresholds for any standard SNMP set or quick set you assign to selected SNMP devices. This automatically fine-tunes alarm thresholds based on actual performance data on a per SNMP device basis.

Each assigned SNMP device generates performance data for a specified time period. During that time period no alarms are triggered. At the end of the Auto Learn session, the alarm threshold for each assigned SNMP device is adjusted automatically based on the actual performance of the SNMP device. You can manually adjust the alarm threshold values calculated by Auto Learn or run another session of Auto Learn again. Auto Learn cannot be used with individualized SNMP sets.

To apply Auto Learn settings to selected SNMP devices:

  1. Select a standard SNMP set using the <Select SNMP Set> drop-down list. Or click the edit icon of an SNMP set already assigned to a device to populate the <Select SNMP Set> drop-down list with its identifier.
  2. Click Auto Learn to display the Auto Learn popup window. Use a wizard to define parameters used to calculate alarm threshold values.
  3. Assign this standard SNMP set, modified by your Auto Learn parameters, to selected SNMP devices, if not already assigned.

Once Auto Learn is applied to a machine ID and runs for the specified time period, you can click the override auto learn icon for a specific SNMP device and manually adjust the calculated alarm threshold values. You can also re-run Auto Learn again, using a new session of actual performance data to re-calculate alarm threshold values.

Quick Sets

The SNMP Info link page displays a list of MIB objects provided by the specific SNMP device you selected. These MIB objects are discovered by performing a limited SNMP "walk" on all discovered SNMP devices each time a network is scanned is performed. You can use the list of discover MIB objects to instantly create a device-specific SNMP set—called a quick set—and apply it to the device. Once created, quick sets are the same as any standard set. They display in your private folder in Monitor > SNMP Sets and in the drop-down list in Monitor > Assign SNMP. A (QS)prefix reminds you how the quick set was created. Like any other standard set, quick sets can be individualized for a single device, used with Auto Learn, shared with other users, and applied to similar devices throughout the VSA.

  1. Discover SNMP devices using Discovery > By Network or By Agent.
  2. Assign SNMP sets to discovered devices using Monitor > Assign SNMP.
  3. Click the hyperlink underneath the name of the device, called the SNMP info link, in the Assign SNMP page to display a dialog.
  4. Display SNMP monitoring data returned by the quick set using Monitor > SNMP Log, the same as you would for any other standard SNMP set.
  5. Optionally maintain your new quick set using Monitor > SNMP Sets.

To Create a SNMP Alert

  1. Check any of these checkboxes to perform their corresponding actions when an alert condition is encountered:
  2. Set additional email parameters.
  3. Select the SNMP set to add or replace.
  4. Check the SNMP device to apply the alert to.
  5. Click the Apply button.

To Cancel a SNMP Alert

  1. Select the SNMP device checkbox.
  2. Click the Clear button.

    The alert information listed next to the SNMP device is removed.

Passing Alert Information to Emails and Procedures

The following types of monitoring alert emails can be sent and formatted:

Note: Changing this email alarm format changes the format for all monitor set and SNMP set emails.

The following variables can be included in your formatted email alerts and are passed to agent procedures assigned to the alert.

Within an Email

Within a Procedure

Description

<ad>

#ad#

alarm duration

<ao>

#ao#

alarm operator

<at>

#at#

alert time

<av>

#av#

alarm threshold

<cg>

#cg#

event category

<db-view.column>

not available

Include a view.column from the database. For example, to include the computer name of the machine generating the alert in an email, use <db-vMachine.ComputerName>

<dv>

#dv#

SNMP device name

<gr>

#gr#

group ID

<id>

#id#

machine ID

<ln>

#ln#

monitoring log object name

<lo>

#lo#

monitoring log object type: counter, process, object

<lv>

#lv#

monitoring log value

<mn>

#mn#

monitor set name

 

#subject#

subject text of the email message, if an email was sent in response to an alert

 

#body#

body text of the email message, if an email was sent in response to an alert

Create Alarm

If checked and an alert condition is encountered, an alarm is created. Alarms are displayed in Monitor > Dashboard List, Monitor > Alarm Summary and Info Center > Reporting > Reports > Logs > Alarm Log.

Create Ticket

If checked and an alert condition is encountered, a ticket is created.

Run Script

If checked and an alert condition is encountered, an agent procedure is run. You must click the select agent procedure link to choose an agent procedure to run. You can optionally direct the agent procedure to run on a specified range of machine IDs by clicking this machine ID link. These specified machine IDs do not have to match the machine ID that encountered the alert condition.

Email Recipients

If checked and an alert condition is encountered, an email is sent to the specified email addresses.

(Apply Filter)

Enter text in the filter edit box, then click the funnel icon to apply filtering to the drop-down list displayed in Select SNMP Set. Filtering is case-insensitive. Match occurs if filter text is found anywhere in the set name.

Select SNMP Set

Select SNMP sets from the Select SNMP Set list, then click the Apply button to assign the SNMP set to selected machine IDs. You may assign more than one SNMP set to a machine ID. Add or edit SNMP sets using Monitor > SNMP Sets.

Note: Sample SNMP sets do not display in the Assign SNMP > Select SNMP Set drop-down list. Create a copy of a sample SNMP set by selecting the sample set in SNMP Sets and clicking the Save As button. Your copy of the sample SNMP set will display in the drop-down list. In a SaaS-based VSA, Save and Save As buttons are available. You can make changes to the sample set and use it immediately, because it does not get refreshed.

Add Monitor Set

Adds the selected SNMP set to selected SNMP devices.

Replace Monitor Set(s)

Adds the selected SNMP set to selected SNMP devices and removes all other SNMP sets currently assigned to selected SNMP device.

Edit SNMP List

Manually add a new SNMP device or edit the information of existing SNMP devices. Enter the IP and MAC address, name and description for the SNMP device. You can also enter the sysDescr, sysLocation and sysContact values typically returned by polling.

Apply

Applies the selected SNMP set to selected SNMP devices.

Clear

Clears the assignment of a selected SNMP set from selected SNMP devices.

Clear All

Clears all SNMP sets assigned to selected SNMP devices.

Select All/Unselect All

Click the Select All link to check all rows on the page. Click the Unselect All link to uncheck all rows on the page.

Name / Type

The name returned by the ARP protocol when a network scan is performed.

Device IP

The IP address of the SNMP device.

MAC Address

The MAC address of the SNMP device.

SNMP Info

Displays the name returned by the SNMP protocol when a network scan is performed. Click the SNMP Info link to display the SNMP objects for this SNMP device.

SNMP Sets

Displays the list of SNMP sets assigned to a SNMP device.

- Edit - Always displays next to an SNMP set. Click this icon to set header parameters to those matching the selected SNMP device.

- Override auto learn values - Displays if Auto Learn is applied to this standard SNMP set. Click this icon to display or change the actual values calculated by Auto Learn for this SNMP set on this SNMP device.

- Individualized monitor set - Displays if Auto Learn is not applied to this standard SNMP set. Click this icon to create or make changes to a copy of this standard SNMP set that is individualized for this SNMP device. An individualized SNMP set adds an (IND) prefix to the name of the SNMP set.

ATSE

The ATSE response code assigned to machine IDs or SNMP devices:

Email Address

A comma separated list of email addresses where notifications are sent.