Configure Inter-VLAN Routing (router on a stick) With DHCP Server.

Configure Inter-VLAN Routing (Route on Stick). Where VLAN Client Receive IP from DHCP.

Switch Configuration:

Create VLAN
Switch>enable
Switch#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
Switch(config)#vlan 2
Switch(config-vlan)#name IT
Switch(config-vlan)#exit
Switch(config)#vlan 3
Switch(config-vlan)#name HR
Switch(config-vlan)#exit

Assign Switch Port to Access VLAN
Switch#configure terminal
Switch(config)#interface FastEthernet0/2
Switch(config-if)#switchport access vlan 2
Switch(config-if)#exit
Switch(config)#interface FastEthernet0/3
Switch(config-if)#switchport access vlan 3
Switch(config-if)#exit

Create Trunk Port on Switch and Allow Specific VLAN traffic on Trunk Port

Switch(config)#interface FastEthernet0/1

Switch(config-if)#switchport mode trunk

Switch(config-if)#switchport trunk allowed vlan add 2

Switch(config-if)#switchport trunk allowed vlan add 3

Router Configuration:

Configure DHCP Server in Router:

Router(config)#ip dhcp pool vlan2

Router(dhcp-config)#network 10.246.242.0 255.255.255.0

Router(dhcp-config)#default-router 10.246.242.254

Router(config)#ip dhcp pool vlan3

Router(dhcp-config)#network 10.246.243.0 255.255.255.0

Router(dhcp-config)#default-router 10.246.243.254

Configure Router for Inter-VLAN Communication:

Router#configure terminal

Router(config)#interface FastEthernet0/0

Router(config-if)#no shutdown

Router(config-if)#exit

Router(config)#interface fastEthernet 0/0.2

Router(config-subif)#encapsulation dot1Q 2

Router(config-subif)#ip address 10.246.242.254 255.255.255.0

Router(config-subif)#exit

Router(config)#interface fastEthernet 0/0.3

Router(config-subif)#encapsulation dot1Q 3

Router(config-subif)#ip address 10.246.243.254 255.255.255.0

Router(config-subif)#exit