DHCP (Dynamic Host Configuration Protocol) is widely used to automatically assign IP addresses and other network configuration parameters to network devices, enhancing the utilization of IP address.

DHCP Server

DHCP Server is used to dynamically assign IP addresses, default gateway and other parameters to DHCP clients. DHCP (dynamic host configuration protocol) allows a server to assign an IP address to a computer from a preselected range of numbers configured for a particular network.

DHCP Relay

DHCP Relay is used to process and forward DHCP packets between different subnets or VLANs. DHCP clients broadcast DHCP request packets to require for IP addresses. Without this function, clients cannot obtain IP addresses from a DHCP server in the different LAN because the broadcast packets can be transmitted only in the same LAN. DHCP Relay includes three features: Option 82, DHCP Interface Relay and DHCP VLAN Relay.

DHCP Option 82: Option 82 is called the DHCP Relay Agent Information Option.

When enabled, the DHCP relay agent can inform the DHCP server of some specified information of clients by inserting an Option 82 payload to DHCP request packets before forwarding them to the DHCP server, so that the DHCP server can distribute the IP addresses or other parameters to clients based on the payload. In this way, Option 82 prevents DHCP client requests from untrusted sources. Besides, it allows the DHCP server to assign IP addresses of different address pools to clients in different groups.

Property: Dynamic Host Configuration Protocol (DHCP) is a network management protocol used to automate the process of configuring IP address, gateways and other IP related things automatically to connected hosts.

IP Pool Setting: You can customize the DHCP pool subnet and address range to provide simultaneous access to more number of clients.

VLAN IF Address Group Setting: For Configuring a Layer 3 VLAN interface.

Client List: DHCP server to dynamically choose IP addresses from the IP Pools and assign them permanently to clients. To view clients this page is used.

Client Static Binding Table: Configuring the DHCP Server and the Static-Binding. The following table describes the static binding options. Display the address bindings in the client table on the extended Dynamic Host Configuration Protocol (DHCP) local server.

9.1 Property

DHCP property page allows you to enable DHCP which is by default disabled.

To configure and view DHCP property, click DHCP >> Property.

Fig 9.1.1 Default DHCP Property page

Fig 9.1.2 Enable DHCP Property page

Fig 9.1.3 Selecting ports on DHCP Property page

Fig 9.1.4 Edit ports setting DHCP Property page

Fig 9.1.5 DHCP port setting table after enabling page

9.2 IP Pool Setting

With Ip Pool setting can set Start IP address and End address and gateway of pool along with mask. DNS Primary and secondary server along with DHCP leased time can also be set. By default lease time is 1day before renewal of IP.

To configure and view IP Pool Setting, click DHCP >> IP Pool Setting.

Fig 9.2.1 Default DHCP IP Pool setting page

Fig 9.2.2 Edit DHCP IP Pool setting page

Fig 9.2.3 DHCP IP Pool Table after setting page

9.3 VLAN IF Address Group Setting

VLAN interface can be bind with group IP address. To configure and view VLAN IF Address Group Setting , click DHCP >> VLAN IF Address Group Setting.

Fig 9.3.1 DHCP VLAN Interface address pool and Server group table page.

Fig 9.3.2 DHCP Binding VLAN Interface to DHCP server group Ip address page.

Fig 9.3.3 DHCP Binding VLAN Interface to DHCP server group

9.4 Client List

The DHCP Client Table allows you to check the devices that are connected to your network. After creating DHCP server group and binding with VLAN, the members of VLANs are automatically provide IP address. These assigned IP address to client can be seen with DHCP client List.

To view DHCP Client list , click DHCP >> Client list.

Fig 9.4.1 DHCP Client list page.

9.5 Client Static Binding Table

The DHCP static binding feature enables assignment of static IP addresses without creating numerous host pools with manual bindings with MAC addresses. A static binding is a mapping between a fixed IP address and the client's MAC address. Client can be bounded with static IP address and also by particular name also can be assigned to clients.

To configure and view DHCP Client Static Binding , click DHCP >> Client Static Binding Table.

Fig 9.5.1 Default DHCP Client Binding Table page.

Fig 9.5.2 DHCP Client add static binding page.

Fig 9.5.3 DHCP Client Static Binding Table page.