3Com Router 3000 Ethernet FamilyConfiguration Guide Chapter 9 DHCP Configuration3Com Corporation9-22III. Multiple interface DHCP address poolsYou can also configure lease limit for DHCP address pool on multiple interfaces at oneblow.Perform the following configurations in the system view.Table 9-12 Configure lease expiry limit for DHCP address pool on multiple interfacesOperation CommandConfigures expiry limit for dynamic IPaddress leasedhcp server expired { day day [ hourhour [ minute minute ] ] | unlimited }{ interface interface-typeinterface-number [ to interface-typeinterface-number | all }Resets the lease expiry limit to thedefault valueundo dhcp server expired { interfaceinterface-type interface-number [ tointerface-type interface-number | all }By default, an IP address lease expires after one day.Note:For some DHCP configuration items, the system provides different configurationmodes for different types of DHCP address pools. You can configure these itemsrespectively in the global DHCP address pool, interface DHCP address pool andmultiple interface DHCP address pools.These configuration tasks include: Configuring domain name for DHCP client,configuring DNS IP address for DHCP client, configuring NetBIOS IP address forDHCP client, defining NetBIOS node type for DHCP client and configuring DHCPcustomization items.Currently, the leasing valid period specified by this command cannot exceed the year of2106.9.5.6 Configuring Domain Names for DHCP ClientsOn a DHCP server, you may configure domain names that DHCP clients should usewhen obtaining the DNS service on a per-address pool basis.Perform the following configuration in DHCP address pool view to configure the globalDHCP address pool.
