200-301 · Question #729
Which two steps must you perform to enable router-on-a-stick on a switch? (Choose two.)
The correct answer is B. Connect the Router to a trunk port. E. Assign the access port to a VLAN. To enable router-on-a-stick on a switch, you must configure the port connected to the router as a trunk and assign access ports to VLANs.
Question
Which two steps must you perform to enable router-on-a-stick on a switch? (Choose two.)
Options
- AConfigure an IP route to the VLAN destination network.
- BConnect the Router to a trunk port.
- CConfigure full duplex.
- DConfigure the subinterface number exactly the same as the matching VLAN.
- EAssign the access port to a VLAN.
How the community answered
(32 responses)- A3% (1)
- B75% (24)
- C6% (2)
- D16% (5)
Why each option
To enable router-on-a-stick on a switch, you must configure the port connected to the router as a trunk and assign access ports to VLANs.
Configuring an IP route to the VLAN destination network is performed on the router, not on the switch, to enable inter-VLAN routing.
The switch port connected to the router must be configured as a trunk port to allow it to carry traffic for multiple VLANs over a single physical link to the router's subinterfaces.
Configuring full duplex is a general interface setting for optimizing communication and is not a specific step required to enable router-on-a-stick functionality.
Configuring the subinterface number to match the VLAN is a configuration step performed on the router, not on the switch.
Access ports on the switch must be assigned to specific VLANs to segment network traffic, which then allows the router-on-a-stick to perform inter-VLAN routing between these segments.
Concept tested: Configuring switch for router-on-a-stick
Source: https://www.cisco.com/c/en/us/support/docs/lan-switching/inter-vlan-routing/41606-180.html
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