ZyXEL Communications ZyWALL 1050 User Manual page 189

Table 49 Network > Interface > Ethernet > Edit (continued)
LABEL
Relay Server 1
Relay Server 2
IP Pool Start
Address
Pool Size
First DNS Server
Second DNS
Server
Third DNS
Server
Lease time
Chapter 10 Interface
DESCRIPTION
Enter the IP address of a DHCP server for the network.
This field is optional. Enter the IP address of another DHCP server for the
network.
These fields appear if the ZyWALL is a DHCP Server.
Enter the IP address from which the ZyWALL begins allocating IP addresses. If
you want to assign a static IP address to a specific computer, click Add Static
DHCP.
If this field is blank, the Pool Size must also be blank. In this case, the ZyWALL
can assign every IP address allowed by the interface's IP address and subnet
mask, except for the first address (network address), last address (broadcast
address) and the interface's IP address.
Enter the number of IP addresses to allocate. This number must be at least one
and is limited by the interface's Subnet Mask. For example, if the Subnet Mask
is 255.255.255.0 and IP Pool Start Address is 10.10.10.10, the ZyWALL can
allocate 10.10.10.10 to 10.10.10.254, or 245 IP addresses.
If this field is blank, the IP Pool Start Address must also be blank. In this case,
the ZyWALL can assign every IP address allowed by the interface's IP address
and subnet mask, except for the first address (network address), last address
(broadcast address) and the interface's IP address.
Specify the IP addresses of a maximum of three DNS servers that the network
can use. The ZyWALL provides these IP addresses to DHCP clients. You can
specify these IP addresses two ways.
Custom Defined - enter a static IP address.
From ISP - use the IP address of a DNS server that another interface received
from its DHCP server.
Specify how long each computer can use the information (especially the IP
address) before it has to request the information again. Choices are:
infinite - select this if IP addresses never expire.
days, hours, and minutes - select this to enter how long IP addresses are
valid.
ZyWALL 1050 User's Guide
189