SVI vs VLAN – Know the Comparison & Difference in 2020


A virtual LAN or VLAN is any broadcast domain that is segregated and isolated at the data link layer  OSI layer 2. VLANs reduce the load on a network by keeping local traffic within a VLAN. However, because each type VLAN its own domain, a mechanism is needed for VLANS to pass data to other VLANS without passing the data through a router.

Related – VLAN vs Subnet


The solution is SVI networking i.e. switched virtual interface. An SVI interface is usually found on Layer 3 switches. With SVIs the switch recognizes the packet destinations that are local to the sending VLAN and then routes packets destined for different VLANs.v

An SVI interface can be created for each VLAN that exists but only one SVI can be mapped to each VLAN. An SVI  is virtual and has no physical port defined and performs the same functions for the VLAN as a router interface. SVI is also called Interface VLAN.


Abbreviation for
Switched Virtual Interface
Virtual Local Area Network
Platform support
Only configurable on Layer 3 devices.
Can be configured on Layer 3 and Layer 2 devices
Routing across IP subnets
SVI can perform routing across IP subnets
Cannot perform Routing between VLANs
Interface VLAN (VLAN ID)
Can be enabled via following command:
OSI Layer
Works on Layer 3 of OSI Model
Works on Layer 2 of OSI Model

Download the difference table here.
For more information on the difference in VLAN and SVI watch this video –


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