ZyXEL Communications 100 Series, 200 Series manual 254

Chapter 10 Interface

Table 75 Network > Interface > VLAN > Edit (continued)

LABEL	DESCRIPTION
IP Pool Start	Enter the IP address from which the ZyWALL begins allocating IP addresses. If
Address	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	Specify the IP addresses of a maximum of three DNS servers that the network
Second DNS	can use. The ZyWALL provides these IP addresses to DHCP clients. Use one of
Server	the following ways to specify these IP addresses.
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 ZyWALL uses the IP address of this interface and works as a
	DNS relay.
First WINS	Type the IP address of the WINS (Windows Internet Naming Service) server
Server, Second	that you want to send to the DHCP clients. The WINS server keeps a mapping
WINS Server	table of the computer names on your network and the IP addresses that they
	are currently using.
Lease time	Specify how long each computer can use the information (especially the IP
	address) before it has to request the information again. Choices are:
	infinite - select this if IP addresses never expire.
	days, hours, and minutes - select this to enter how long IP addresses are
	valid.
Edit static DHCP	Click this if you want the ZyWALL to assign static IP addresses to computers.
table	The Static DHCP screen appears.

	Figure 179 Network > Interface > Ethernet > Edit > Edit static DHCP
	table
	The ZyWALL checks this table when it assigns IP addresses. If the computer’s
	MAC address is in the table, the ZyWALL assigns the corresponding IP
	address. Otherwise, the ZyWALL assigns the IP address dynamically using the
	IP Pool Start Address and Pool Size.
	Note: You must click OK in the Static DHCP screen and then
	click OK in this screen to save your changes.
OK	Click OK to save your changes back to the ZyWALL.
Cancel	Click Cancel to exit this screen without saving.

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	ZyWALL USG 100/200 Series User’s Guide