ZyXEL Communications eircom D1000, User Manual

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81
eircom D10
00 modem User’s Guide
Chapter 6 Home Networking
Table 21
Network Setting > Home Networking > LAN Setup (continued)
LABEL DESCRIPTION
DHCP If set to Enable , your Device can assign IP addresses, an IP default gateway and DNS
servers to Windows 95, Windows NT and other systems that support the DHCP client.
If set to Disable , the DHCP server will be disabled.
If set to DHCP Relay , the Device acts as a surrogate DHCP server and relays DHCP
requests and responses between the remote server and the clients. Enter the IP
address of the actual, remote DHCP server in the
Remote DHCP Server field in this
case.
When DHCP is used, the following items need to be set:
IP Addressing Values
IP Pool Starting
Address This field specifies the first of the contiguous addresses in the IP address pool.
Pool Size This field specifies the size, or count of the IP address pool.
DHCP Server Lease Time
Lease Time This field specifies the lease time in seconds of an IP address assigned by the DHCP
server.
DNS Values
DNS Server 1
DNS Server 2
Select Obtained From ISP if your ISP dynamically assigns DNS server information
(and the Device's WAN IP address).
Select UserDefined if you have the IP address of a DNS server. Enter the DNS
server's IP address in the field to the right. If you chose UserDefined , but leave the
IP address set to 0.0.0.0, UserDefined changes to None after you click Apply . If you
set a second choice to UserDefined , and enter the same IP address, the second
UserDefined changes to None after you click Apply .
Select DNS Relay to have the Device act as a DNS proxy only when the ISP uses IPCP
DNS server extensions. The Device's LAN IP address displays in the field to the right
(read-only). The Device tells the DHCP clients on the LAN that the Device itself is the
DNS server. When a computer on the LAN sends a DNS query to the Device, the
Device forwards the query to the real DNS server learned through IPCP and relays the
response back to the computer. You can only select
DNS Relay for one of the three
servers; if you select DNS Relay for a second server, that choice changes to None
after you click Apply .
Select None if you do not want to configure DNS servers. You must have another
DHCP sever on your LAN, or else the computers must have their DNS server addresses
manually configured. If you do not configure a DNS server, you must know the IP
address of a computer in order to access it.
Apply Click this to save your changes.
Cancel Click this to restore your previously saved settings.
6.3 The Static DHCP Screen
This table allows you to assign IP addresses on the LAN to specific individual computers based on
their MAC Addresses.
Every Ethernet device has a unique MAC (Media Access Control) address. The MAC address is
assigned at the factory and consists of six pairs of hexadecimal characters, for example,
00:A0:C5:00:00:02.