Inter-VLAN Routing Methods and Configurations

A type of inter-VLAN routing where a router connects to a switch using a single physical interface but creates multiple subinterfaces, each representing a VLAN. Each subinterface acts as a gateway for its assigned VLAN and routes traffic between them.

A network device that can perform both Layer 2 (switching) and Layer 3 (routing) functions. It uses a single interface to route traffic between multiple VLANs, typically configured with SVIs (Switched Virtual Interfaces).

A dedicated interface on a multilayer switch that acts as a gateway for a specific VLAN. It helps with routing traffic between different VLANs on the same switch.

A method of inter-VLAN routing where a router connects to a switch using multiple physical interfaces, each connected to a different VLAN. Each interface acts as a gateway for its assigned VLAN and routes traffic between them.

A method of inter-VLAN routing where a router connects to a switch using a single physical interface but creates multiple subinterfaces, each representing a VLAN. Each subinterface acts as a gateway for its assigned VLAN and routes traffic between them.

A type of inter-VLAN routing where a router connects to a switch using multiple physical interfaces, each connected to a different VLAN. Each interface acts as a gateway for its assigned VLAN and routes traffic between them.

A type of inter-VLAN routing where a router connects to a switch using multiple physical interfaces, each connected to a different VLAN. Each interface acts as a gateway for its assigned VLAN and routes traffic between them.

A type of inter-VLAN routing where a router connects to a switch using multiple physical interfaces, each connected to a different VLAN. Each interface acts as a gateway for its assigned VLAN and routes traffic between them.

Legacy inter-VLAN routing requires a router with separate physical interfaces for each VLAN, just like having separate bridges for each neighborhood.

Multilayer switches, like a Ferrari, can be expensive compared to router-on-a-stick setups, but they can be much faster for routing traffic because they handle it in hardware.

Router-on-a-stick routing relies on software-based routing, which is great for smaller setups but can get bogged down when dealing with a lot of VLANs, just like a two-lane road during rush hour.

The 'dot1Q' command uses the VLAN ID to tag packets, much like labeling cars with destination neighborhood stickers to help them get to where they need to go.

The 'no switchport' command transforms a Layer 2 port into a Layer 3 routed port, similar to converting a local street into an expressway.

Connecting a switch port to a router for router-on-a-stick inter-VLAN routing requires a trunk port, much like a multi-lane road connecting different neighborhoods.

Inter-VLAN routing, like building a connected city, can be approached in various ways: Legacy Routing (separate bridges for each neighborhood), Router-on-a-Stick (one highway with lanes for each VLAN), and Layer 3 Switch (fast, scalable, and efficient internal superhighway system).

VLANs and routing can be easily understood and applied by using analogies and breaking down concepts into simple explanations. It's like understanding a traffic network within a city. Each VLAN is like a neighborhood, each router or switch is a bridge or road, and routing is like the process of moving traffic between neighborhoods.

Just like giving each lane (subinterface) on a highway a unique address (IP), each VLAN (subinterface) on a network needs a unique address.