ZyXEL Communications PLA-470 V2 - V3.0.5 Guía de instalación descargar pdf (Pagina 268)

The terminals can be connected to the network PLC devices in different ways as

follows:

•

Terminals directly connected to a PLC device connected to the electrical net-

work;

•

terminals connected to a switch PLC device that connects to the PLC network

and distributes the connections in the room via its switch function;

•

Terminals connected via their radio interface to a Wi-Fi access point fitted

with a PLC functionality that it uses for its connection to the PLC network.

Supervising a PLC Network

The professional and industrial corporate networks require certain functionalities

that are not demanded by home networks (supervision, in particular), in order to

permanently ensure the good network operation and to retrieve alerts to the admin-

istrators should some devices fail.

Among the standardized protocols for supervision, the SNMP (simple network

management protocol), versions v1, v2, and v3, has become prevalent in the net-

work devices that are now largely fitted with a SNMP software element. This soft-

ware element is used for interrogating a remote network device and for obtaining

the value of a number of network and system parameters (lost packets, received

packets, temperature of the boards, CPU polling, and so forth).

Network Architecture 249

Figure 11.2 Corporate network architecture with routers incorporating PLC networks

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ZyXEL Communications PLA-470 V2 - V3.0.5 Guía de instalación Pagina 268