User manual

SNMP
224
33002479 06 07/2008
SNMP
Introduction This topic describes the Simple Network Management Protocol (SNMP), which is
configured on your NOE or 140 CPU 651 x0. Network management software allows
a network manager to:
z monitor and control network components
z isolate problems and identify their causes
z query the status of devices such as a host computer, routers, switches, and
bridges
z obtain statistics about the networks to which devices are connected
Manager/Agent
Paradigm
Network management software follows the conventional client-server model. To
avoid confusion with other network communication protocols that use the client/
server terminology, network management software uses the following terms:
z Manager: the client application that runs on the manager’s computer
z Agent: the application that runs on a network device
The manager uses conventional transport protocols (for example, TCP or UDP) to
establish communication with the agent. Managers and agents then exchange
requests and responses according to the network management protocol.
Simple Network
Management
Protocol
Your NOE module is configured with the Simple Network Management Protocol
(SNMP), which is the standard protocol used to manage a local area network (LAN).
SNMP defines exactly how a manager communicates with an agent.
The SNMP defines the format of the requests that a manager sends to an agent and
the format of the replies that the agent returns to the manager.
The MIB Each SNMP object has to be defined and given a unique name. Both the manager
and agent programs must agree on the names and the meanings of the fetch and
store operations. The set of all objects SNMP can access is known as a
Management Information Base (MIB).
Private MIB Schneider obtained a private MIB, Groupe_Schneider (3833). Under the Groupe
Schneider private MIB is a Transparent Factory Ethernet (TFE) private MIB. The
Transparent Factory SNMP embedded component controls the Schneider private
MIB function.