PLANET XGS3-24040 - Manual (Page 216)

Chapter 28 DHCP Configuration
28-10
Switch(config)#interface vlan 1
Switch(Config-Vlan-1)#ip address 10.16.1.2 255.255.0.0
Switch(Config-Vlan-1)#exit
Switch(config)#ip dhcp pool A
Switch(dhcp-A-config)#network 10.16.1.0 24
Switch(dhcp-A-config)#lease 3
Switch(dhcp-A-config)#default-route 10.16.1.200 10.16.1.201
Switch(dhcp-A-config)#dns-server 10.16.1.202
Switch(dhcp-A-config)#netbios-name-server 10.16.1.209
Switch(dhcp-A-config)#netbios-node-type H-node
Switch(dhcp-A-config)#exit
Switch(config)#ip dhcp excluded-address 10.16.1.200 10.16.1.201
Switch(config)#ip dhcp pool B
Switch(dhcp-B-config)#network 10.16.2.0 24
Switch(dhcp-B-config)#lease 1
Switch(dhcp-B-config)#default-route 10.16.2.200 10.16.2.201
Switch(dhcp-B-config)#dns-server 10.16.2.202
Switch(dhcp-B-config)#option 72 ip 10.16.2.209
Switch(dhcp-config)#exit
Switch(config)#ip dhcp excluded-address 10.16.2.200 10.16.2.201
Switch(config)#ip dhcp pool A1
Switch(dhcp-A1-config)#host 10.16.1.210
Switch(dhcp-A1-config)#hardware-address 00-03-22-23-dc-ab
Switch(dhcp-A1-config)#client-name management
Switch(dhcp-A1-config)#exit
Usage Guide: When a DHCP/BOOTP client is connected to a VLAN1 port of the switch, the client can only
get its address from 10.16.1.0/24 instead of 10.16.2.0/24. This is because the broadcast packet from the
client will be requesting the IP address in the same segment of the VLAN interface after VLAN interface
forwarding, and the VLAN interface IP address is 10.16.1.2/24, therefore the IP address assigned to the client
will belong to 10.16.1.0/24.
If the DHCP/BOOTP client wants to have an address in 10.16.2.0/24, the gateway forwarding broadcast
packets of the client must belong to 10.16.2.0/24. The connectivity between the client gateway and the switch
must be ensured for the client to get an IP address from the 10.16.2.0/24 address pool.