D-Link DGS-1510 User Manual - Page 67

DGS-1510 Series Gigabit Ethernet SmartPro Switch Web UI Reference Guide Click the Apply button to accept the changes made. The fields that can be configured for DHCP Class Settings are described below: Parameter Class Name Description Enter the DHCP class name with a maximum of 32 characters. Click the Apply button to accept the changes made. Click the Edit button to modify the DHCP option-matching pattern for the corresponding DCHP class. Click the Delete button to remove the specified entry. Enter a page number and click the Go button to navigate to a specific page when multiple pages exist. After clicking the Edit button, the following window will appear. Figure 4-26 DHCP Class Option Settings Window The fields that can be configured are described below: Parameter Option Hex Bitmask Description Enter the DHCP option number. The range is from 1 to 254. Enter the hex pattern of the specified DHCP option. Tick the check box not to match the remaining bits of the option. Enter the hex bit mask for masking of the pattern. The masked pattern bits will be matched. If not specified, all bits entered in Hex will be checked. Click the Apply button to accept the changes made. Click the Delete button to remove the specified entry. Click the Back button to return to the previous window. DHCP Server The Dynamic Host Configuration Protocol (DHCP) allows the Switch to designate IP addresses, subnet masks, default gateways and other IP parameters to devices that request this information. This occurs when a DHCP enabled device is booted on or attached to the locally attached network. This device is known as the DHCP client and when enabled, it will emit query messages on the network before any IP parameters are set. When the DHCP server receives this request, it will allocate an IP address to the client. The DHCP client may be then utilize the IP address allocated by the DHCP server as its local configuration. The user can configure many DHCP related parameters that it will utilize on its locally attached network, to control and limit the IP settings of clients desiring an automatic IP configuration, such as the lease time of the allocated IP address, the range of IP addresses that will be allowed in its DHCP pool, the ability to exclude various IP addresses within the range so as not to make identical entries 56