ZyXEL Communications 100 Series, 200 Series manual 253

	Chapter 10 Interface
Table 75 Network > Interface > VLAN > Edit (continued)
LABEL	DESCRIPTION
Connectivity Check	The interface can regularly check the connection to the gateway you specified
	to make sure it is still available. You specify how often the interface checks 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.
Enable	Select this to turn on the connection check.
Connectivity
Check
Check Method	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.
Check Period	Enter the number of seconds between connection check attempts.
Check Timeout	Enter the number of seconds to wait for a response before the attempt is a
	failure.
Check Fail	Enter the number of consecutive failures before the ZyWALL stops routing
Tolerance	through the gateway.
Check Default	Select this to use the default gateway for the connectivity check.
Gateway
Check this	Select this to specify a domain name or IP address for the connectivity check.
address	Enter that domain name or IP address in the field next to it.
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.
Related Setting
WAN TRUNK	Click this link to go to a screen where you can set this interface to be part of a
	WAN trunk for load balancing.
Policy Route	Click this link to go to the screen where you can manually configure a policy
	route to associate traffic with this interface.
More Settings/Less	Click this button to display a greater or lesser number of configuration fields.
Settings
DHCP Setting	The DHCP settings are available for the OPT, LAN and DMZ interfaces.
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.

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ZyWALL USG 100/200 Series User’s Guide