Operation Manual – DHCPH3C S7500E Series Ethernet Switches Chapter 2 DHCP Server Configuration2-8To do… Use the command… RemarksExclude IP addressesfrom automatic allocationdhcp serverforbidden-iplow-ip-address[ high-ip-address ]OptionalExcept IP addresses of theDHCP server interfaces, alladdresses in the DHCPaddress pool areassignable by default.Note:z In DHCP address pool view, using the network command repeatedly overwrites theprevious configuration.z Using the dhcp server forbidden-ip command repeatedly can specify multiple IPaddress ranges not assignable.2.5.4 Configuring a Domain Name Suffix for the ClientYou can specify a domain name suffix in each DHCP address pool on the DHCP serverto provide the clients with the domain name suffix. With this suffix assigned, the clientneeds only input part of a domain name, and the system will add the domain namesuffix for name resolution. For details about DNS, refer to DNS Configuration of thismanual.Follow these steps to configure a domain name suffix in the DHCP address pool:To do… Use the command… RemarksEnter system view system-view —Enter the DHCPaddress pool viewdhcp server ip-poolpool-name —Specify a domain namesuffix for the clientdomain-namedomain-nameRequiredNot specified by default.2.5.5 Configuring DNS Servers for the ClientWhen a DHCP client wants to access a host on the Internet via the host name, itcontacts a Domain Name System (DNS) server holding host name-to-IP addressmappings to get the host IP address. You can specify up to eight DNS servers in theDHCP address pool.Follow these steps to configure DNS servers in the DHCP address pool: