ZyXEL Vantage CNM User Guide - Page 276

Chapter 9 Device Network Settings Table 108 Device Operation > Device Configuration > Network > Interface > VLAN > Add/Edit (continued) LABEL DESCRIPTION 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. Pool Size 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. 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. First DNS Server Second DNS Server Third DNS Server 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. Specify the IP addresses up to three DNS servers for the DHCP clients to use. 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 DHCP clients use the IP address of this interface and the ZyWALL works as a DNS relay. First WINS Server, Second WINS Server Type the IP address of the WINS (Windows Internet Naming Service) server that you want to send to the DHCP clients. The WINS server keeps a mapping 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 Static DHCP Table Ping Check days, hours, and minutes - select this to enter how long IP addresses are valid. Click Edit static DHCP table to configure static IP addresses for the ZyWALL to assign to computers connected to this interface. 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. 276 Vantage CNM User's Guide