ZyXEL Communications ISG50-ISDN User Manual page 265

Table 73 Configuration > Network > Interface > VLAN > Edit (continued)
LABEL
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
ISG50 User's Guide
DESCRIPTION
The ISG50 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 ISG50 stops routing to the gateway. The ISG50 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 ISG50 regularly ping the gateway you specify to make sure it is
still available.
Select tcp to have the ISG50 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 ISG50 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 ISG50 provides to the network. Choices are:
None - the ISG50 does not provide any DHCP services. There is already a DHCP server
on the network.
DHCP Relay - the ISG50 routes DHCP requests to one or more DHCP servers you
specify. The DHCP server(s) may be on another network.
DHCP Server - the ISG50 assigns IP addresses and provides subnet mask, gateway,
and DNS server information to the network. The ISG50 is the DHCP server for the
network.
The following fields appear if the ISG50 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.
The following fields appear if the ISG50 is a DHCP Server.
Enter the IP address from which the ISG50 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 ISG50 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.
Chapter 12 Interfaces
265