TP-Link T2600G-18TSTL-SG3216 T2600G-18TSUN V1 Configuration Guide - Page 599

Configuring DHCP Configuration Examples IP Address Client id/Hardware Address Type Lease Time Left --------- 192.168.0.2 01-d43d-7ebf-615f Automatic 01:57:27 192.168.0.8 01-fcaa-1459-e94a Manual Infinite 5.2 Example for DHCP Interface Relay 5.2.1 Network Requirements A company wants to assign IP addresses to all computers in two departments, and there is only one DHCP server available. It is required that computers in the same department should be on the same subnet, while computers in different departments should be on different subnets. 5.2.2 Configuration Scheme In the given situation, the DHCP relay feature can satisfy the requirement because DHCP relay enables DHCP clients from different subnets to share one DHCP server. The network topology is as the following figure shows. Computers in the marketing department belong to VLAN 10 which is connected to the switch via port 1/0/8. The interface address of VLAN 10 is 192.168.2.1/24. Computers in the R&D department belong to VLAN 20 which is connected to the switch via port 1/0/16. The interface address of VLAN 20 is 192.168.3.1/24. The DHCP server is connected to the DHCP Relay switch via port 1/0/5, and its IP address is 192.168.0.59/24. Figure 5-1 Network Topology for DHCP Relay DHCP Server 192.168.0.59/24 VLAN 10 192.168.2.1/24 Gi1/0/5 VLAN 20 192.168.3.1/24 Gi1/0/8 Gi1/0/16 Marketing Dept. 192.168.2.0/24 Switch DHCP Relay R&D Dept. 192.168.3.0/24 The overview of the configurations are as follows: 1) Before DHCP Relay configurations, create two DHCP server pools on the DHCP server, one is on 192.168.2.0/24 and the other is on 192.168.3.0/24. Make sure the DHCP server can reach all DHCP clients. Configuration Guide 569