Defining Encapsulations for VLAN between Router and Switch for Inter-VLANs Routing

Defining Encapsulations for VLAN between Router and Switch for Inter-VLANs Routing

Step1: Configue Port on Router for Logically divided an Fast Ethernet Port into 3 VLANs ports

Router(config)#interface FastEthernet0/0  (Enter the Fast Ethernet Port of Router)
Router(config-if)# no ip address        (Remove the IP address from the Interface)
Router(config-if)#no shutdown        (Give the Interface UP)
Router(config-if)#exit            (Exit from the Port)

Router(config)#interface FastEthernet0/0.2               (sub interface for the VLAN 2)
Router(config-subif)# encapsulation dot1Q 2         (IEEE 802.1Q Encapsulation for VLAN 2)   
Router(config-if)# ip address 10.1.1.1 255.0.0.0         (IP Address for the VLAN 2)
Router(config)#exit                (Exit from the Port)

Router(config)#interface FastEthernet0/0.3        (sub interface for the VLAN 3)
Router(config-subif)# encapsulation dot1Q 3    (IEEE 802.1Q Encapsulation for VLAN 3)
Router(config-subif)# ip address 20.1.1.1 255.0.0.0     (IP Address for the VLAN 3
Router(config-subif)#exit            (Exit from the Port)

Router(config-if)#interface FastEthernet0/0.4    (sub interface for the VLAN 4)
Router(config-subif)# encapsulation dot1Q 4    (IEEE 802.1Q Encapsulation for VLAN 4)
Router(config-subif)# ip address 30.1.1.1 255.0.0.0     (IP Address for the VLAN 4)
Router(config-subif)#exit            (Exit from the Port)


Step2: Now Create VLANs on The Switch

Switch(config)#vlan 2
Switch(config)#name Sale
Switch(config)#vlan 3
Switch(config)#name Hr
Switch(config)#vlan 4
Switch(config)#name IT

OUTPUT:
Switch#show vlan

VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
1    default                          active    Fa0/13, Fa0/14, Fa0/15, Fa0/16
                                                Fa0/17, Fa0/18, Fa0/19, Fa0/20
                                                Fa0/21, Fa0/22, Fa0/23, Fa0/24
2    sales                            active    Fa0/1
3    HR                               active    Fa0/2, Fa0/3, Fa0/4, Fa0/5
                                                Fa0/6, Fa0/7, Fa0/8
4    IT                               active    Fa0/9, Fa0/10, Fa0/11, Fa0/12


Step3: Configure Port for Trunk
Switch(config)#interface F0/1
Switch(config-if)#switchport mode trunk

Step4: Now connect Different PC for Acess to VLANs.

PC1:     IP address: 10.1.1.2
    Subnet Mask: 255.0.0.0
    Default Gateway:10.1.1.1

PC2:    IP address: 20.1.1.2
    Subnet Mask: 255.0.0.0
    Default Gateway:20.1.1.1

PC3:    IP address: 30.1.1.2
    Subnet Mask: 255.0.0.0
    Default Gateway:30.1.1.1

Step5: Ping Each Other

On pc1 to pc2 and pc3

ping 10.1.1.2
ping 20.1.1.2
ping 30.1.1.2

 You see Each Reply for each ping.