SNMP32

SNMP:

Simple Network Management Protocol

This protocol is used for remote maintenance, diagnosis and the protection of networks and hosts. SNMP can be used to manage devices that execute a so-called SNMP agent.

SNMP agent

Serves as a so-called provider, i.e.: it provides information about one device to other SNMP management workstations (in our case to zenon with the SNMP driver). These cyclically poll the SNMP agents for information about the according device properties.

SNMP object

Parts of a device accessed by the SNMP agent or modified by an SNMP agent are called SNMP objects.

MIB

Management Information Bases

Is a logical database, which contains a group/collection of SNMP objects. As different network management services can be used for different device types and protocols, each service has its own MIB.

OID

Object Identifier

Is a specific detail information of a SNMP object.

TCP/IP

Transmission Control Protocol / Internet Protocol

This is a four layer set of manufacturer-independent, frequently used application and transport protocols. Is used by the zenon SNMP driver to read network information via SNMP.

ICMP

Internet Control Message Protocol

This protocol sends error and control messages to the participating computers during the transmission process.

Ping

Checks the accessibility of another computer.

TRAP

In SNMP this is a message, which an agent sends to a management system. Thus the occurance of an event is displayed on the host, where the agent is executed. The SNMP service can e.g. be configured in the way, that it sends a trap when receiving an information request that neither contains the correct community name nor an accepted host name for the service.