ZyXEL ISG50-PSTN User Guide - Page 273
DHCP Relay, DHCP Server, Add Static DHCP, Pool Size, Subnet Mask, IP Pool Start Address, Custom
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Chapter 12 Interfaces Table 78 Configuration > Network > Interface > Bridge > Edit (continued) LABEL Interface Parameters Egress Bandwidth Ingress Bandwidth MTU DHCP Setting DHCP DESCRIPTION Enter the maximum amount of traffic, in kilobits per second, the ISG50 can send through the interface to the network. Allowed values are 0 - 1048576. This is reserved for future use. Enter the maximum amount of traffic, in kilobits per second, the ISG50 can receive from the network through the interface. Allowed values are 0 - 1048576. Maximum Transmission Unit. Type the maximum size of each data packet, in bytes, that can move through this interface. If a larger packet arrives, the ISG50 divides it into smaller fragments. Allowed values are 576 - 1500. Usually, this value is 1500. 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. Relay Server 1 Relay Server 2 IP Pool Start Address 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. Pool Size 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. 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 ISG50 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 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. First DNS Server Second DNS Server Third DNS Server 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 ISG50 - the DHCP clients use the IP address of this interface and the ISG50 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. ISG50 User's Guide 273