2-19To avoid address conflicts, the DHCP server automatically excludes IP addresses (used by the gateway,FTP server and so forth) specified with the dhcp server forbidden-ip command from dynamicallocation.To avoid IP address conflicts, the IP addresses to be dynamically assigned to DHCP clients are thosenot occupied by specific network devices (such as gateways and FTP servers).The lease time can differ with address pools. But that of the IP addresses of the same address pool arethe same. Lease time is not inherited, that is to say, the lease time of a child address pool is not affectedby the configuration of the parent address pool.Follow these steps to configure the dynamic IP address allocation mode:To do… Use the command… RemarksEnter system view system-view —interface interface-typeinterface-numberdhcp server expired { day day[ hour hour [ minute minute ] ] |unlimited }Configure forthe currentinterfacequitConfigurethe leasetimeConfiguremultipleinterfaces insystem viewdhcp server expired { day day[ hour hour [ minute minute ] ] |unlimited } { interfaceinterface-type interface-number[ to interface-typeinterface-number ] | all }OptionalThe default lease time is oneday.Specify the IP addressesthat are not dynamicallyassigneddhcp server forbidden-iplow-ip-address [ high-ip-address ]OptionalBy default, all IP addresses in aDHCP address pool areavailable for being dynamicallyassigned.z The dhcp server forbidden-ip command can be executed repeatedly. That is, you can configuremultiple IP addresses that are not dynamically assigned to DHCP clients.z Use the dhcp server forbidden-ip command to configure the IP addresses that are not assigneddynamically in global address pools and interface address pools.z If an IP address that is not to be automatically assigned has been configured as a statically-boundIP address, the DHCP server still assigns this IP address to the client whose MAC address or clientID has been bound.Configuring a Domain Name Suffix for the DHCP ClientYou can configure a suffix for the domain name in each DHCP interface address pool on the DHCPserver. The DHCP server provides the domain name suffix together with an IP address for a requestingDHCP client.Follow these steps to configure a domain name suffix for the client:
