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Chapter 10 Interface
ZyWALL USG 100/200 Series User’s Guide
260
Interface
Parameters
Egress
Bandwidth
Enter the maximum amount of traffic, in kilobits per second, the ZyWALL can
send through the interface to the network. Allowed values are 0 - 1048576.
Ingress
Bandwidth
This is reserved for future use.
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
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, 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
Second DNS
Server
Third DNS
Server
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. 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 ZyWALL uses the IP address of this interface and works as a
DNS relay.
Table 80 Network > Interface > Bridge > Add (continued)
LABEL DESCRIPTION