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Set up SNMP MIB monitoring

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Monitoring sensor health is possible through the Simple Network Management Protocol (SNMP). The sensor responds to SNMP requests sent by an authorized monitoring server. The SNMP monitor polls sensor OIDs periodically (up to 50 times a second).

Supported SNMP versions are SNMP version 2 and version 3. The SNMP protocol utilizes UDP as its transport protocol with port 161.

Sensor OIDs

Management console and sensor OID Format Description
Appliance name 1.3.6.1.2.1.1.5.0 STRING Appliance name for the on-premises management console
Vendor 1.3.6.1.2.1.1.4.0 STRING Microsoft Support (support.microsoft.com)
Platform 1.3.6.1.2.1.1.1.0 STRING Sensor or on-premises management console
Serial number 1.3.6.1.4.1.53313.1 STRING String that the license uses
Software version 1.3.6.1.4.1.53313.2 STRING Xsense full-version string and management full-version string
CPU usage 1.3.6.1.4.1.53313.3.1 GAUGE32 Indication for zero to 100
CPU temperature 1.3.6.1.4.1.53313.3.2 STRING Celsius indication for zero to 100 based on Linux input. "No sensors found" will be returned from any machine that has no actual physical temperature sensor (for example VMs)
Memory usage 1.3.6.1.4.1.53313.3.3 GAUGE32 Indication for zero to 100
Disk Usage 1.3.6.1.4.1.53313.3.4 GAUGE32 Indication for zero to 100
Service Status 1.3.6.1.4.1.53313.5 STRING Online or offline if one of the four crucial components is down
Locally/cloud connected 1.3.6.1.4.1.53313.6 STRING Activation mode of this appliance: Cloud Connected / Locally Connected
License status 1.3.6.1.4.1.53313.7 STRING Activation period of this appliance: Active / Expiration Date / Expired

Note that:

  • Non-existing keys respond with null, HTTP 200.
  • Hardware-related MIBs (CPU usage, CPU temperature, memory usage, disk usage) should be tested on all architectures and physical sensors. CPU temperature on virtual machines is expected to be not applicable.
  • You can download the log that contains all the SNMP queries that the sensor receives, including the connection data and raw data.

Prerequisites for AES and 3-DES Encryption Support for SNMP Version 3

  • The network management station (NMS) must support Simple Network Management Protocol (SNMP) Version 3 to be able to use this feature.
  • It is important to understand the SNMP architecture and the terminology of the architecture to understand the security model used and how the security model interacts with the other subsystems in the architecture.
  • Before you begin configuring SNMP monitoring, you need to open the port UDP 161 in the firewall.

Set up SNMP monitoring

  1. On the side menu, select System Settings.

  2. Expand Sensor Management, and select SNMP MIB Monitoring :

  3. Select Add host and enter the IP address of the server that performs the system health monitoring. You can add multiple servers.

  4. In Authentication section, select the SNMP version.

    • If you select V2, type the string in SNMP v2 Community String. You can enter up to 32 characters, and include any combination of alphanumeric characters (uppercase letters, lowercase letters, and numbers). Spaces aren't allowed.

    • If you select V3, specify the following:

      Parameter Description
      Username The SNMP username can contain up to 32 characters and include any combination of alphanumeric characters (uppercase letters, lowercase letters, and numbers). Spaces are not allowed.

      The username for the SNMP v3 authentication must be configured on the system and on the SNMP server.
      Password Enter a case-sensitive authentication password. The authentication password can contain 8 to 12 characters and include any combination of alphanumeric characters (uppercase letters, lowercase letters, and numbers).

      The username for the SNMP v3 authentication must be configured on the system and on the SNMP server.
      Auth Type Select MD5 or SHA-1.
      Encryption Select DES (56 bit key size)1 or AES (AES 128 bits supported)2.
      Secret Key The key must contain exactly eight characters and include any combination of alphanumeric characters (uppercase letters, lowercase letters, and numbers).

    1 RFC3414 User-based Security Model (USM) for version 3 of the Simple Network Management Protocol (SNMPv3)

    2 RFC3826 The Advanced Encryption Standard (AES) Cipher Algorithm in the SNMP User-based Security Model

  5. Select Save.

Next steps

For more information, see Export troubleshooting logs.