ZyXEL Communications PLA-470 V2 - V3.0.5 Przewodnik Instalacji Pobierz pdf (Strona 258)

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DHCP can provide a station with a certain range of addresses and that each of these

addresses is negotiated and is valid only for a given period of time.

DHCP Architecture

The DHCP is based on a client-server architecture. In the case of PLC networks, the

DHCP client is the device connected to the PLC network and the DHCP server is the

PLC modem-router.

In the example illustrated in Figure 10.25, there is only one DHCP server

located at the InternetBox level for recent IAP offers or at the Internet modem level,

but a network can be made up of several gateways for access to the Internet and

therefore of several DHCP servers. Using several DHCP servers does not trigger any

network constraints.

When a station initiates the DHCP protocol, this protocol provides it with the

following parameters:

•

IP address;

•

Subnet mask;

•

Default gateway;

•

DNS address;

•

Domain name.

Configuring an Internet Gateway 239

Figure 10.23 Ideal architecture of a PLC home network

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