SNMP

  • 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  .1.3.6.1.2.1. Each number is assigned a symbol depending on the level to make it more readable, for instance .iso.org.dod.internet.mgmt.mib-2. 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 (.1.3.6.1.4.1 [.iso.org.dod.internet.private.enterprises]). 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).

ISO/OSI Model
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
    ipConvLite

    Universal protocol converter for small and distributed applications

  • ipConvOPC
    ipConvOPC

    Windows software package for universal conversion between diverse standard protocols

  • ipConv/VM
    ipConv/VM

    Universal protocol conversion for VMware Workstation and VMware ESXi

  • ipConv/Cloud
    ipConv/Cloud

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

  • ipConvLite/MEC2PBS
    ipConvLite/MEC2PBS

    Universal protocol converter with integrated PROFIBUS-DP, slave interface

  • ipConvLite/MEC2PBM
    ipConvLite/MEC2PBM

    Universal protocol converter with integrated PROFIBUS-DP, master interface

  • ipConvLite/MEC2PNS
    ipConvLite/MEC2PNS

    Universal protocol converter with integrated PROFINET-IO, slave interface

  • ipConv
    ipConv

    Universal protocol converter for highest degree of flexibility

  • ip4Cloud
    ip4Cloud

    Link critical processes securely to IT/Cloud/SCADA services

  • ip4Cloud/SEC3PB
    ip4Cloud/SEC3PB

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

  • ip4Cloud/SEC3IO
    ip4Cloud/SEC3IO

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

  • ipELB
    ipELB

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

References
  • 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
    WINGAS, Germany

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