A small office network uses a Catalyst 2960 Layer 2 switch with VLAN 10 for users and VLAN 20 for printers. Hosts in one VLAN must be able to reach the other, but the 2960 must remain in Layer 2 mode. Which action will enable this inter-VLAN communication?
Configure a single physical interface on an external router as an 802.1Q trunk and create subinterfaces for VLAN 10 and VLAN 20 (router-on-a-stick).
Activate PortFast on all access ports assigned to VLAN 10 and VLAN 20.
Enable VTP pruning on the switch's trunk ports.
Apply the switchport access vlan 10 and switchport access vlan 20 commands to the same access port.
Because a Catalyst 2960 is a Layer 2-only switch, it cannot route between VLANs. The simplest way to provide inter-VLAN connectivity is to use the router-on-a-stick method: connect a single physical router interface to the switch as an 802.1Q trunk, then create one subinterface per VLAN and assign each an IP address from the corresponding subnet. The router receives tagged traffic, makes a Layer 3 routing decision, and sends the packet back on the trunk with the appropriate VLAN tag. Features such as VTP pruning, assigning two VLANs to the same access port, or enabling PortFast do not perform routing and therefore do not allow hosts in different VLANs to communicate.
Ask Bash
Bash is our AI bot, trained to help you pass your exam. AI Generated Content may display inaccurate information, always double-check anything important.
What does 'router-on-a-stick' mean in networking?
Open an interactive chat with Bash
Why can't a Catalyst 2960 switch perform inter-VLAN routing?
Open an interactive chat with Bash
What is the purpose of 802.1Q tagging in VLAN communication?
Open an interactive chat with Bash
Cisco CCNA 200-301
Network Access
Your Score:
Report Issue
Bash, the Crucial Exams Chat Bot
AI Bot
Loading...
Loading...
Loading...
Pass with Confidence.
IT & Cybersecurity Package
You have hit the limits of our free tier, become a Premium Member today for unlimited access.
Military, Healthcare worker, Gov. employee or Teacher? See if you qualify for a Community Discount.
Monthly
$19.99
$19.99/mo
Billed monthly, Cancel any time.
3 Month Pass
$44.99
$14.99/mo
One time purchase of $44.99, Does not auto-renew.
MOST POPULAR
Annual Pass
$119.99
$9.99/mo
One time purchase of $119.99, Does not auto-renew.
BEST DEAL
Lifetime Pass
$189.99
One time purchase, Good for life.
What You Get
All IT & Cybersecurity Package plans include the following perks and exams .