An administrator needs to allow communication between devices in separate broadcast domains on the same switch. Which configuration is required to accomplish this?
Enable PortFast on all switch ports associated with the broadcast domains.
Configure EtherChannel between the switches to combine links.
Connect a router to the switch using a trunk link and set up router subinterfaces.
Assign both broadcast domains to the same access port on the switch.
To enable communication between devices in different VLANs (Virtual Local Area Networks), inter-VLAN routing must be configured. This is commonly achieved by connecting a router to the switch using a trunk link and setting up router subinterfaces for each VLAN, a method known as 'router-on-a-stick'. Enabling PortFast is a Spanning Tree Protocol (STP) feature that allows ports to enter the forwarding state immediately but does not facilitate communication between different broadcast domains. Configuring EtherChannel combines multiple physical links into one logical link for increased bandwidth but does not enable inter-VLAN communication. Assigning multiple VLANs to the same access port is not possible because an access port can carry traffic for only one VLAN.
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Cisco CCNA 200-301
Network Access
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