What Is VLAN?

VLAN is a collection of nodes that are grouped together in a single broadcast domain that is based on something other than physical location some reasons To Have Using VLAN.

Security:- separating systems that have sensitive data from the rest of the network decreases the

chances that other people cannot access your information.

Projects/Special Attentions:- Managing a project or working with a specialized application can be

simplified by the use of VLAN that brings all required nodes together.

Performance/Bandwidth:- careful monitoring of network use allows the network admin to create

VLAN that reduce nos. of router hops & increase apparent bandwidth for network users.

Departments/Specific Job types:- Companies may want VLAN set up for a department that are

heavy network users or a VLAN across a department that is dedicated tp specify users.you can create VLAN (Name, Domain & Port Assignments).Communication between VLAN requires the use of a router for multiple VLAN on multiple switches, you must to be able to communicate via a single link between the switches, you must use a process called TRUNKING. It is the technology that allows information from multiple VLAN TRUNKING PROTOCOL (VTP) is the protocol that switches use to communicate among themselves VLAN configuration.