Snmp (Simple Network Management Protocol) - WAGO -I/O-SYSTEM 750 XTR Manual

WAGO-I/O-SYSTEM 750 XTR
750-352/040-000 FC ETHERNET G3 XTR
More Information about the implemented Protocols
You can find a list of the exact available implemented protocols in the section
"Technical Data" to the fieldbus coupler and/or controller.
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11.1.2.6

SNMP (Simple Network Management Protocol)

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The Simple Network Management Protocol (SNMP) is responsible for
transporting the control data that allows the exchange of management
information as well as status and statistic data between individual network
components and a management system.
An SNMP management workstation polls the SNMP agents to obtain information
on the relevant devices.
SNMP is supported in versions 1/2c and some fieldbus couplers/controllers in
version 3.
This represents a community message exchange in SNMP versions 1 and 2c.
The community name of the network community must thereby be specified.
In SNMP version 3, exchanging messages is user-related. Each device, that
knows the passwords set via WBM, may read or write values from the controller.
In SNMPv3, user data from SNMP messages can also be transmitted in encoded
form. This way, both requested values and values to be written cannot be easily
decoded by others via ETHERNET. This is why SNMPv3 is often used in safety-
related networks.
The device data, that can be accessed or modified by an SNMP agent, is called
SNMP object. The sets of SNMP objects are stored in a logical database called
Management Information Base (MIB); this is why these objects are typically
known as "MIB objects".
The SNMP of the ETHERNET controller includes both the general MIB acc. to
RFC1213 (MIB II) and a special WAGO MIB.
SNMP is processed via port 161. The port number for SNMP traps (agent
messages) is 161. Both ports must be enabled to use SNMP.
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Fieldbus Communication 149
Version 1.3.0
Manual