A 3 Snmp - Simple Network Management Protocol - Phoenix Contact SCX 4POE 2LX User Manual

Management Information
Base (MIB)
Agents
Manager
Traps
109008_en_01
A 3 SNMP – Simple Network Management Protocol
SNMP is a non-proprietary standard for network management. It defines commands for
reading and writing information, and defines formats for error and status messages. More-
over, SNMP provides a structured model. It comprises agents with their respective MIB
(Management Information Base) and a manager. The manager is a software tool which runs
on a network management station.
Description which contains all the data (objects and variables) required for network man-
agement.
The agents are located inside switches, bus terminals, routers, and other devices that sup-
port SNMP. The task of the agents is to collect and provide data in the MIB.
The manager regularly requests and displays this information. The devices can be config-
ured via data which is written in the MIB by the manager. In the event of an emergency, the
agents can also send messages (traps) directly to the manager.
Traps are spontaneous SNMP alarm or information messages that are sent by an SNMP-
compatible device when specific events occur. The traps are transmitted with maximum pri-
ority to various addresses if necessary. The traps can then be displayed by the manage-
ment station in plain text. You must set the IP addresses that are to receive these traps (trap
targets/receivers) on the respective device.
– The factory default password for all user interfaces (except SNMPv3) is "private".
– With SNMPv3 the password must have a minimum length of eight characters. If the
default password is "private", you have to use "private_" for access.
– With SNMP V1/2 passwords are not necessary.
– You must permanently save all configuration changes that are to take effect after a
device restart using the "flWorkFWCtrlConfSave" object.
Not all devices support all object classes. If an unsupported object class is requested, an
error message is generated. If an attempt is made to modify an unsupported object class,
an error message is also generated.
The descriptions of the individual SNMP objects can be found in the respective MIBs. You
can download these at phoenixcontact.net/products. You will find the MIB in the respective
software packet (zip file) of a firmware package.
SNMP – Simple Network Management Protocol
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