Operation Manual – DHCPH3C S7500 Series Ethernet Switches Chapter 2 DHCP Server Configuration2-3z The first IP address found among the available IP addresses in the DHCPaddress pool.z If no IP address is available, the DHCP server queries lease-expired andconflicted IP addresses. If the DHCP server finds such IP addresses, it assignsthem; otherwise the DHCP server does not assign IP addresses.2.2 Global Address Pool-Based DHCP Server Configuration2.2.1 Configuration Task ListComplete the following tasks to configure global address pool-based DHCP server:Task RemarksEnabling DHCP RequiredConfiguring Global Address Pool Mode onInterface(s) OptionalConfiguring to assign IP addressesby static bindingConfiguringHow to AssignIP Addressesin a GlobalAddress PoolConfiguring to assign IP addressesdynamicallyOne among these twooptions is required. Onlyone mode can be selectedfor the same globaladdress pool.Configuring DNS Services for the DHCP Server OptionalConfiguring NetBIOS Services for the DHCP Server OptionalCustomizing DHCP Service OptionalConfiguring Gateway Addresses for DHCP Clients Optional2.2.2 Enabling DHCPYou need to enable DHCP before performing other DHCP-related configurations,which takes effect only after DHCP is enabled.Follow these steps to enable DHCP:To do… Use the command… RemarksEnter system view system-view —Enable DHCP dhcp enable RequiredBy default, DHCP is enabled2.2.3 Configuring Global Address Pool Mode on Interface(s)You can configure the global address pool mode on the specified or all interfaces of aDHCP server. After that, when the DHCP server receives DHCP packets from DHCP