• 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)
Available Protocol Stacks

SNMP, Client

Applicable Products
  • ipConvLite

    Universal protocol converter for small and distributed applications

  • ipConvOPC

    Windows software package for universal conversion between diverse standard protocols

  • ipConv/VM

    Universal protocol conversion for VMware Workstation and VMware ESXi

  • ipConv/Cloud

    Universal protocol conversion for the cloud environment or Linux based edge devices

  • ipConvLite/MEC2PBS

    Universal protocol converter with integrated PROFIBUS-DP, slave interface

  • ipConvLite/MEC2PBM

    Universal protocol converter with integrated PROFIBUS-DP, master interface

  • ipConvLite/MEC2PNS

    Universal protocol converter with integrated PROFINET-IO, slave interface

  • ipConv

    Universal protocol converter for highest degree of flexibility

  • ip4Cloud

    Link critical processes securely to IT/Cloud/SCADA services

  • ip4Cloud/SEC3PB

    Capture PROFIBUS data by eavesdropping and transmit it to Cloud/IT or SCADA services

  • ip4Cloud/SEC3IO

    Switch and monitor digital I/O states to transmit them to IT/Cloud/SCADA services

  • ipELB

    4-Port Ethernet Line Breaker with relay controlled Ethernet ports and integrated I/O module

  • 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