ZyXEL Communications 310 User Manual page 156

Chapter 7 Interfaces
Table 53 Configuration > Network > Interface > VLAN > Create Virtual Interface (continued)
LABEL
MTU
Connectivity Check
Enable
Connectivity
Check
Check Method
Check Period
Check Timeout
Check Fail
Tolerance
Check Default
Gateway
Check this
address
Check Port
DHCP Setting
DHCP
Relay Server 1
Relay Server 2
IP Pool Start
Address
156
DESCRIPTION
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.
The ZyWALL can regularly check the connection to the gateway you specified to make
sure it is still available. You specify how often to check the connection, how long to wait
for a response before the attempt is a failure, and how many consecutive failures are
required before the ZyWALL stops routing to the gateway. The ZyWALL resumes routing
to the gateway the first time the gateway passes the connectivity check.
Select this to turn on the connection check.
Select the method that the gateway allows.
Select icmp to have the ZyWALL regularly ping the gateway you specify to make sure it
is still available.
Select tcp to have the ZyWALL regularly perform a TCP handshake with the gateway
you specify to make sure it is still available.
Enter the number of seconds between connection check attempts.
Enter the number of seconds to wait for a response before the attempt is a failure.
Enter the number of consecutive failures before the ZyWALL stops routing through the
gateway.
Select this to use the default gateway for the connectivity check.
Select this to specify a domain name or IP address for the connectivity check. Enter
that domain name or IP address in the field next to it.
This field only displays when you set the Check Method to tcp. Specify the port
number to use for a TCP connectivity check.
The DHCP settings are available for the OPT, LAN and DMZ interfaces.
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.
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.
ZyWALL 110/310/1100 Series User's Guide