ZyXEL USG110/210/310 User Guide - Page 387
Add Static DHCP
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Chapter 10 Interfaces Table 127 Configuration > Network > Interface > LAG > Add (continued) LABEL DESCRIPTION IP Pool Start Address These fields appear if the Zyxel Device is a DHCP Server. Enter the IP address from which the Zyxel Device 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 Zyxel Device 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 Zyxel Device 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 Zyxel Device 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. First WINS Server, Second WINS Server Default Router Zyxel Device - the DHCP clients use the IP address of this interface and the Zyxel Device works as a DNS relay. 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. If you set this interface to DHCP Server, you can select to use either the interface's IP address or another IP address as the default router. This default router will become the DHCP clients' default gateway. Lease time To use another IP address as the default router, select Custom Defined and enter the IP address. 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 Extended Options Add Edit Remove # Name Code Type Value Enable IP/MAC Binding days, hours, and minutes - select this to enter how long IP addresses are valid. This table is available if you selected DHCP server. Configure this table if you want to send more information to DHCP clients through DHCP packets. Click this to create an entry in this table. See Section 10.5.6 on page 329. Select an entry in this table and click this to modify it. Select an entry in this table and click this to delete it. This field is a sequential value, and it is not associated with any entry. This is the option's name. This is the option's code number. This is the option's type. This is the option's value. Select this option to have this interface enforce links between specific IP addresses and specific MAC addresses. This stops anyone else from manually using a bound IP address on another device connected to this interface. Use this to make use only the intended users get to use specific IP addresses. ZyWALL USG Series User's Guide 387