SNMP/Network Device monitoring

Creating a new SNMP/Network Device monitor

Using the REST API to add a new SNMP/Network Device monitor: Click here

To create a SNMP Monitor, follow the steps given below:

  1. Go to New Monitor and click on Add New Monitor link.
  2. Select SNMP/Network Device under Services category.
  3. Enter the Display name of the monitor to be created.
  4. Enter the Hostname / IP address of the host.
  5. Enter the SubNetMask of the network. In case of multiple system IP addresses configured with single DNS name, then select the check-box in the Advanced option.
  6. Enter the polling interval time in minutes.
  7. Enter the credential details like user name and password for authentication, or select the required credentials from the Credential Manager list after enabling the Select from Credential list option.
  8. Provide the SNMP Port at which the SNMP service is running in the host (default port number is 161).
  9. Choose the SNMP Version and specify the following details based on the version selected:
    • SNMP v1/v2: Enter the Community String of the server. The default value is 'public'.
    • SNMP v3: If SNMP v3 is selected, enter the following details:
      • Enter the UserName and Context Name.
      • Select a Security Level. (No Auth,No Priv / Auth,No Priv / AuthPriv)
        • NoAuthNoPriv - Messages can be sent unauthenticated and unencrypted. Enter a UserName and Context Name.
        • AuthNoPriv - Messages can be sent authenticated but unencrypted. Enter a UserName, Context Name and an Authentication Password. You can select an Authentication Protocol like MD5 or SHA from the drop-down list.
        • AuthPriv - Messages can be sent authenticated and encrypted. Enter a UserName, Context Name,an Authentication Password and a Privacy Password. You can select an Authentication Protocol like MD5 or SHA from the drop-down list. By default 'DES' encryption technique will be used.
  10. Enter the polling interval time in minutes.
  11. Enter the timeout value in seconds.
  12. If you are adding a new monitor from an Admin Server, select a Managed Server.
  13. Choose the Monitor Group from the combo box with which you want to associate SNMP/Network Device monitor (optional). You can choose multiple groups to associate your monitor.
  14. Click Add Monitor(s). This discovers SNMP/Network Device from the network and starts monitoring them.

Note: SMUX (tcp 199 port) is the snmp multiplexing protocol (RFC 1227). It can be used by an SNMP agent to query variables maintained by another user-level process. For monitoring user-processes like kernel related details using the SNMP agent, you must install SMUX and register the mibs. If SMUX is implemented, by default, TCP port 199 should be open for connection.

Monitored Parameters

Go to the Monitors Category View by clicking the Monitors tab. Click on SNMP/Network Device under the Services table. Displayed is the SNMP/Network Device monitor's bulk configuration view distributed into three tabs:

  • Availability tab gives the Availability history for the past 24 hours or 30 days.
  • Performance tab gives the Health Status and events for the past 24 hours or 30 days.
  • List view tab enables you to perform bulk admin configurations.

SNMP monitor allows you to connect and display the availability and response time of SNMP device. You can also view the custom attributes of the SNMP network device in the same page.

Following are the list of metrics monitored in SNMP monitor:

Parameter Description
Availability Connects to the server configured for monitoring and retrieves the details pertaining to the validity and authenticity of the SNMP Network device.
CPU Utilization Amount of CPU utilized by the SNMP Network device (in %).
Memory Utilization Amount of memory utilized by the SNMP Network device (in %).
Disk Utilization Amount of disk space utilized by the SNMP Network device (in %).
Response Time Amount of time taken to connect to the SNMP Network device and provide response (in ms).
Attribute Graphs - Displays the graphical representation of the values of the attributes with respect to time.