SNMP stands for 'Simple Network Management Protocol'. It belongs to the TCP/IP protocol family and enables the management of devices in an IP network, such as routers, switches, workstations etc. There are several variants which are defined in the corresponding RFCs:

  • SNMP V1
  • SNMP V2
  • SNMP V3

SNMP distinguishes between an agent (server) which supplies the data and a manager (client) which accesses the data.

Data transmission is based on the connectionless UDP protocol.

The data is encoded as per ASN.1 (ISO/IEC 8824), Basic Encoding Rules (BER).

OIDs or object identifiers are used for data addressing. An OID has a hierarchical structure consisting of a string of decimal numbers separated by a point '.', for instance  . Each number is assigned a symbol depending on the level to make it more readable, for instance The meaning of the numbers on each level is defined and also reveals the meaning of the object addressed this way.
The address space consists of a standardized and a proprietary part. In the standardized part, standardized information objects are defined (for instance MIB II), while the proprietary area is reserved for manufacturer-specific objects (. []). Many manufacturers use their proprietary identifiers for managing device-specific information. MIB files encoded in ASN.1 format allow the definition of the information (Management Information Block).


7 Application Layer Simple Network Management Protocol (SNMP)
6 Presentation Layer ASN.1
BER (Basic Encoding Rules)
5 Session Layer n/a
4 Transport Layer UDP (RFC 768)
3 Network Layer IP (RFC 791)
2 Link Layer Transmission of IP datagrams over ethernet network (RFC 894)
1 Physical Layer Ethernet (IEEE 802.3)

Implemented Protocol Stacks

SNMP, Client

Applicable Products

  • ipConvLite

    inexpensive protocol converter for standardized application

  • ipConvPBS

    Universal protocol converter with integrated PROFIBUS-DP, slave interface

  • ipConvPBM

    Universal protocol converter with integrated PROFIBUS-DP, master interface

  • ipConvPNM

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  • ipConvPNS

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  • ipConv

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  • BLS Lötschbergtunnel II
    BLS Lötschbergtunnel II, Switzerland

    Products: ipConv ipRoute
    Protocol Stacks: IEC 60870-5-104, Master IEC 60870-5-104, Slave SNMP, Client

  • BLS AlpTransit - Lötschbergtunnel
    BLS AlpTransit - Lötschbergtunnel, Switzerland

    Products: ipConv ipRoute
    Protocol Stacks: OPC DA 3.0, Server IEC 60870-5-104, Slave IEC 60870-5-101, Master IEC 60870-5-104, Master SNMP, Client

  • Nordsee One
    Nordsee One, Germany

    Products: ipConv
    Protocol Stacks: Modbus, Master IEC 60870-5-104, Slave IEC 60870-5-101, Slave IEC 61850, Client IEC 61850, Server OPC UA 1.02, Server SNMP, Client

    WINGAS, Germany

    Products: ipConvLite
    Protocol Stacks: SNMP, Client IEC 60870-5-104, Slave