Inter vlan routing using multi layer switch part 1

A Switched Virtual Interface (SVI) is a logical interface configured within a multi-layer switch compared to an external router to where a trunk is required. An SVI can be created for each VLAN that exists but only one SVI can be mapped to each VLAN. An SVI is virtual in that there is no physical port defined yet it can perform the same functions for the VLAN as a router interface and can be configured in much the same way as a router interface. The SVI for the VLAN provides Layer 3 processing for packets to or form all switch ports associated with that VLAN.