Which of the following VLANs do(es) NOT participate in inter-VLAN routing through the rtrA router?

• 300-420 : All Parts

VLAN 22 is the only VLAN that does not participate in inter-VLAN routing through the rtrA router. The given network diagram and the commands reflect a router-on-a-stick (RoaS) configuration. In a RoaS configuration, inter-VLAN routing is achieved in two steps.

The first step sets up the switch:

• Configure the switch
• Configure the required VLANs
• Configure the switch port connecting to the router interface as a trunk port
• Enable dot1q or ISL encapsulation on the trunk port
• Configure the switch ports connecting to the VLANs as access ports
• Assign the access switch ports to respective VLANs

The second step sets up the router:

• Configure the router
• Enable the router interface connected to the trunk switch port
• Create separate subinterfaces on the trunk router interface for each VLAN
• Enable dot1q or ISL encapsulation on the subinterfaces
• Assign IP addresses to each subinterface in the same subnet as the VLAN of which the interface will be a member. Consequently, this address will become the default gateway for each host in that VLAN.

In the scenario, the subinterface created for VLAN 22 is not configured for inter-VLAN routing because the encapsulation command is missing. Without this command, the encapsulation type and the VLAN ID remain

Objective:
Layer 2 Technologies
Sub-Objective:
Configure and verify trunking