defines network management solutions in terms of network protocols and the exchange of supervised data.
The SNMP structure relies on the following elements:
-
Manager: The manager allows entire or partial network supervision.
-
Agents: Each supervised device has one or more software modules named Agent that are used by the SNMP protocol.
-
MIB: The Management Information Base is a database or collection of objects.
The SNMP agent is implemented on the BMENOR2200H module. This allows a manager to access MIB-II standardized objects from the Modicon X80 agent through the SNMP protocol. The MIB-II allows management of TCP/IP communication layers.
The SNMP protocol defines the types of messages between the agent and the manager. These messages are encapsulated in datagrams.
Messages from the manager to an agent:
-
Get_Request: Message used to obtain the value of one or more variables.
-
Get_Next_Request: Obtains the value of the next variables.
-
Set_Request: Sets the value of a variable.
Messages from an agent to the manager: