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.
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.
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:
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.
The SNMP Info link page displays a list of SNMP objects provided by the specific SNMP device you selected. These objects are discovered by performing a limited SNMP "walk" on all discovered SNMP devices each time a LAN Watch is performed. You can subsequently define device-specific SNMP sets called quick sets and associate alerts with these quick sets. Quick sets can be individualized for a single device. The standard version of the quick set can be shared with other users and applied to similar devices throughout the VSA. The prefix
To Create a SNMP Alert
To Cancel a SNMP Alert
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 in procedures.
If checked and an alarm condition is encountered, a ticket is created.
If checked and an alarm 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 alarm condition.
If checked and an alarm condition is encountered, an email is sent to the specified email addresses.
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 the SaaS version of the 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
Applies the selected SNMP set to selected SNMP devices.
Clears the assignment of a selected SNMP set from selected SNMP devices.
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 LAN Watch is performed.
The IP address of the SNMP device.
The MAC address of the SNMP device.
Displays the name returned by the SNMP protocol when a LAN Watch is performed. Click the SNMP Info link to display the SNMP objects for this SNMP device.
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.
The ATSE response code assigned to machine IDs or SNMP devices:
A comma separated list of email addresses where notifications are sent.