Chapter 11 Interfaces

 

Table 55 Configuration > Network > Interface > Ethernet > Edit (continued)

 

LABEL

DESCRIPTION

 

Check Port

This field only displays when you set the Check Method to tcp.

 

 

Specify the port number to use for a TCP connectivity check.

 

 

 

 

DHCP Setting

These fields appear when Interface Properties is Internal or

 

 

General.

 

 

 

 

DHCP

Select what type of DHCP service the ZyWALL provides to the

 

 

network. Choices are:

 

 

None - the ZyWALL does not provide any DHCP services. There is

 

 

already a DHCP server on the network.

 

 

DHCP Relay - the ZyWALL routes DHCP requests to one or more

 

 

DHCP servers you specify. The DHCP server(s) may be on another

 

 

network.

 

 

DHCP Server - the ZyWALL assigns IP addresses and provides

 

 

subnet mask, gateway, and DNS server information to the network.

 

 

The ZyWALL is the DHCP server for the network.

 

 

 

 

 

These fields appear if the ZyWALL is a DHCP Relay.

 

 

 

 

Relay Server 1

Enter the IP address of a DHCP server for the network.

 

 

 

 

Relay Server 2

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.

 

 

 

 

IP Pool Start

Enter the IP address from which the ZyWALL begins allocating IP

 

Address

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

Specify the IP addresses up to three DNS servers for the DHCP clients

 

Server, Second

to use. Use one of the following ways to specify these IP addresses.

 

DNS Server,

 

 

Third DNS

Custom Defined - enter a static IP address.

 

Server

 

 

 

 

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.

 

 

 

 

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ZyWALL USG 50 User’s Guide