Chapter 7 Interfaces

Table 58 Configuration > Network > Interface > Bridge > Create Virtual Interface (continued)

LABEL

DESCRIPTION

Address

This is the final network prefix combined by the selected delegated prefix and the

 

suffix.

 

Note: This field displays the combined address after you click OK and reopen this

 

screen.

 

 

Interface

 

Parameters

 

 

 

Egress

Enter the maximum amount of traffic, in kilobits per second, the ZyWALL can send

Bandwidth

through the interface to the network. Allowed values are 0 - 1048576.

 

 

Ingress

This is reserved for future use.

Bandwidth

Enter the maximum amount of traffic, in kilobits per second, the ZyWALL can receive

 

 

from the network through the interface. Allowed values are 0 - 1048576.

 

 

MTU

Maximum Transmission Unit. Type the maximum size of each data packet, in bytes,

 

that can move through this interface. If a larger packet arrives, the ZyWALL divides it

 

into smaller fragments. Allowed values are 576 - 1500. Usually, this value is 1500.

 

 

DHCP Setting

 

 

 

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 addresses. If you

Address

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.

 

 

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

Specify the IP addresses up to three DNS servers for the DHCP clients to use. Use one

Second DNS

of the following ways to specify these IP addresses.

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.

 

 

168

 

ZyWALL 110/310/1100 Series User’s Guide