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Chapter 7 Interfaces
ZyWALL 110/310/1100 Series User’s Guide
120
IP Pool Start
Address
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, use the Static DHCP Table.
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.
Pool Size 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.
First DNS
Server, Second
DNS Server,
Third DNS
Server
Specify the IP addresses up to three DNS servers for the DHCP clients to use. Use one
of the following ways to specify these IP addresses.
Custom Defined - enter a static IP address.
From ISP - select the DNS server that another interface received from its DHCP
server.
ZyWALL - the DHCP clients use the IP address of this interface and the ZyWALL works
as a DNS relay.
First WINS
Server, Second
WINS Server
Type the IP address of the WINS (Windows Internet Naming Service) server that you
want to send to the DHCP clients. The WINS server keeps a mapping table of the
computer names on your network and the IP addresses that they are currently using.
Default Router If you set this interface to DHCP Server, you can select to use either the interface’s IP
address or another IP address as the default router. This default router will become the
DHCP clients’ default gateway.
To use another IP address as the default router, select Custom Defined and enter the
IP address.
Lease time 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.
Extended
Options
This table is available if you selected DHCP server.
Configure this table if you want to send more information to DHCP clients through
DHCP packets.
Add Click this to create an entry in this table. See Section 7.3.4 on page 124.
Edit Select an entry in this table and click this to modify it.
Remove Select an entry in this table and click this to delete it.
# This field is a sequential value, and it is not associated with any entry.
Name This is the name of the DHCP option.
Code This is the code number of the DHCP option.
Type This is the type of the set value for the DHCP option.
Value This is the value set for the DHCP option.
Table 41 Configuration > Network > Interface > Ethernet > Edit (continued)
LABEL DESCRIPTION