SNMP

Some definitions:

  • MIB (Management Information Base): hierarchical structure of the information exposed by a SNMP agent.

  • SMI (Structure of Management Information): defines the standard rules and format for describing a MIB.

OID DataTypes

Data types defined as part of SMI:

  • Integer: Signed 32bit Integer.

  • Integer32: Same as Integer.

  • UInteger32: Unsigned 32bit Integer.

  • Octet String: Arbitrary binary or textual data (typically max 255 characters).

  • Object Identifier: An OID.

  • Bit String: Enumeration of named bits. Unsigned datatype.

  • IpAddress: An IP address.

  • Counter32: Monotonically increasing non-negative integer (max value = 32bits-1). Restart at zero when max value is reached.

  • Counter64: Same as Counter32 but max value = 64bits-1.

  • Gauge32: Unsigned integer, which may increase or decrease, but shall never exceed a maximum value.

  • TimeTicks: Unsigned integer which represents the time, modulo 232 (4294967296 dec), in hundredths of a second between two epochs.