This chapter provides information and commands concerning the following topics:
Inter-VLAN communication using an external router: router-on-a-stick
Inter-VLAN communication tips
Inter-VLAN communication on a multilayer switch through an SVI
Configuring inter-VLAN communication on an L3 switch
Removing L2 switchport capability of an interface on an L3 switch
Configuration example: inter-VLAN communication
Configuration example: IPv6 inter-VLAN communication
Inter-VLAN Communication Using an External Router: Router-on-a-Stick
Router(config)# interface fastethernet 0/0 |
Moves to interface configuration mode |
Router(config-if)# no shutdown |
Enables the interface |
Router(config-if)# interface fastethernet 0/0.1 |
Creates subinterface 0/0.1 and moves to subinterface configuration mode |
Router(config-subif)# description Management VLAN 1 |
(Optional) Sets the locally significant description of the subinterface |
Router(config-subif)# encapsulation dot1q 1 native |
Assigns VLAN 1 to this subinterface. VLAN 1 will be the native VLAN. This subinterface uses the 802.1q tagging protocol |
Router(config-subif)# ip address 192.168.1.1 255.255.255.0 |
Assigns the IP address and netmask |
Router(config-subif)# interface fastethernet 0/0.10 |
Creates subinterface 0/0.10 and moves to subinterface configuration mode |
Router(config-subif)# description Accounting VLAN 10 |
(Optional) Sets the locally significant description of the subinterface |
Router(config-subif)# encapsulation dot1q 10 |
Assigns VLAN 10 to this subinterface. This subinterface uses the 802.1q tagging protocol |
Router(config-subif)# ip address 192.168.10.1 255.255.255.0 |
Assigns the IP address and netmask |
Router(config-subif)# end |
Returns to interface configuration mode |