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What Is Layer 2 and Layer 3 Vlan?

Sophia Al-Mansoor • • 6 min read
What Is Layer 2 and Layer 3 Vlan?
I answered them, Layer 2 VLAN is a single broadcast domain. It works on layer 2 (Datalink Layer). They can communicate only within it. And L3 VLAN is an Interface, that works on Network Layer. In order to do inter VLAN routing/ communication we need L3 interface (SVI).

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Keeping this in view, what is Layer 2 VLAN?

VLANs provide support for a Layer 2 trunk port. A Layer 2 trunk interface enables you to configure a single logical interface to represent multiple VLANs on a physical interface. You can configure a set of VLANs and VLAN identifiers that are automatically associated with one or more Layer 2 trunk interfaces.

Also Know, what are Layer 2 and Layer 3 devices? Overview. Traditional switching operates at layer 2 of the OSI model, where packets are sent to a specific switch port based on destination MAC addresses. Routing operates at layer 3, where packets are sent to a specific next-hop IP address, based on destination IP address.

In this manner, what is the difference between Layer 2 and Layer 3 VLAN?

Layer 2 is generally hardware i.e. mac address "routing" or mac tables. Layer 3 has to do with ip's. Layer 3 devices are usually managed and they can create and route between vlans.

What is a Layer 3 switch used for?

Simply put, a layer 3 switch combines the functionality of a switch and a router. It acts as a switch to connect devices that are on the same subnet or virtual LAN at lightning speeds and has IP routing intelligence built into it to double up as a router.

Related Question Answers

Is VLAN a Layer 3?

VLANs are data link layer (OSI layer 2) constructs, analogous to Internet Protocol (IP) subnets, which are network layer (OSI layer 3) constructs.

What is a Layer 2 protocol?

Layer 2, also known as the Data Link Layer, is the second level in the seven-layer OSI reference model for network protocol design. A frame is a protocol data unit, the smallest unit of bits on a Layer 2 network. Frames are transmitted to and received from devices on the same local area network (LAN).
Sophia Al-Mansoor
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Sophia Al-Mansoor

Sophia analyzes international trade, startup ecosystems, retail transformation, and supply chain logistics for modern digital publications.