SNMP Get

The probe SNMP Get performs SNMP Get request of the specified host by its OID (the object identifier in the SNMP Management Information Base - MIB).

SNMP GETNEXT and SNMP WALK functionality requires SAYMON Agent 5.5.1.

This sensor can also perform SNMP GETNEXT and SNMP WALK. Selected operation depends on the OID format:

  • If OID doesn’t end on a dot – sensor performs SNMP GET;

  • If OID does end on a single dot – sensor performs SNMP WALK;

  • If OID ends on two dots – sensor performs SNMP GETNEXT.

If you define multiple OIDs in the SNMP GETNEXT format, sensor will only work with the first one. If you define multiple OIDs of types SNMP GET and SNMP WALK, sensor will send requests to all specified OIDs.

Settings example

SNMP version 1/2c:

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SNMP version 3:

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Field Description

OID

Object identifier, which value is requested. You can define multiple OIDs of types SNMP GET and SNMP WALK. In this case, sensor will send requests to all specified OIDs.

Hostname

SNMP agent IP address or hostname.

Port

SNMP agent port.

SNMP version

SNMP protocol version to use:

  • 1 (RFCs 1155-1157),

  • 2c (RFCs 1901-1908),

  • 3 (RFCs 2571-2574).

Community(SNMP v1/v2c)

Community string (password) for authentication of transactions.

Username(SNMP v3)

Username used for authentication.

Authentication(SNMP v3)

Authentication scheme. The possible values:

  • No (not to use authentication),

  • MD5 (password is required),

  • SHA (password is required).

Privacy(SNMP v3)

Encryption standard. The possible values:

  • No (not to use encryption),

  • DES (password is required),

  • AES (password is required).

Period

How often to perform the check (60 seconds by default).

Result

After the check has been done result is displayed in the Data table:

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Field

Description

<Requested OID number>

The value of the requested SNMP object.

Command-line utility

This check is the counterpart of the terminal command SnmpGet:

$ snmpget -On -v 2c -c public 192.168.1.108:161 .1.3.6.1.6.3.10.2.1.3.0

.1.3.6.1.6.3.10.2.1.3.0 = INTEGER: 61362 seconds