ZyXEL Communications NBG420N User Manual

NBG420N User’s Guide

DHCP (Dynamic Host Configuration Protocol, RFC 2131 and RFC 2132) allows individual 
clients to obtain TCP/IP configuration at start-up from a server. You can configure the 
NBG420N’s LAN as a DHCP server or disable it. When configured as a server, the NBG420N 
provides the TCP/IP configuration for the clients. If DHCP service is disabled, you must have 
another DHCP server on your LAN, or else the computer must be manually configured.

Click Network > DHCP. The following screen displays.

Figure 86   Network > DHCP > General   

The following table describes the labels in this screen.

Table 50   Network > DHCP > General 

LAN DHCP Setup

Enable DHCP Server

Enable or Disable DHCP for LAN.
DHCP (Dynamic Host Configuration Protocol, RFC 2131 and RFC 2132) 

allows individual clients (computers) to obtain TCP/IP configuration at startup 

from a server. Leave the Enable DHCP Server check box selected unless 

your ISP instructs you to do otherwise. Clear it to disable the NBG420N acting 

as a DHCP server. When configured as a server, the NBG420N provides 

TCP/IP configuration for the clients. If not, DHCP service is disabled and you 

must have another DHCP server on your LAN, or else the computers must be 

manually configured. When set as a server, fill in the following four fields.

IP Pool Starting 

Address

This field specifies the first of the contiguous addresses in the IP address pool 

for LAN.

Pool Size

This field specifies the size, or count of the IP address pool for LAN.