This document discusses virtual LAN (VLAN) technology. It defines a VLAN as a logical grouping of network users and resources connected to administratively defined switch ports. VLANs increase the number of broadcast domains while decreasing their size for improved security and performance. The document outlines how VLANs are configured by defining specific ports to specific VLANs with unique IDs. It also lists advantages of VLANs like broadcast control, security, cost reduction, and improved efficiency. Finally, it discusses single and multiple switch VLAN implementations, inter-VLAN communication, and the VLAN Trunking Protocol (VTP) for VLAN administration.

2. Virtual LAN (VLAN)
By
Said Rahim

3.  What is VLAN?
 The need for VLAN?
 How VLAN is Configured?
 Advantages of VLAN
 VLANs within single switch and multiple switches.
 Implementation of VLAN.
 Inter VLAN communication.
 VTP ( Virtual Trunking Protocol)
Objectives

4. A VLAN is a logical grouping
of network users and resources
connected to administratively
defined ports on a switch.
What is VLAN?

6.  The number of broadcast domains are increased
with VLANs while the size decreases.
 In the VLAN a group of users with the demand
of high security can be included so that the
external users out the VLAN cannot interact
with them.
The need for VLAN?

7.  We need to define specific ports to a specific
VLAN.
 Every VLAN must have different network.
 Each VLAN should haven a different ID
How VLAN is configured?

8. Broadcast control
Security
Cost reduction
High performance
Improved IT staff efficiency
Advantages of VLAN

9. Single Switch VLAN

10. Multiple Switch VLAN

11.  VLAN implementation depends on your
requirements
 How many VLANs you want to create.
 Do you want communication between different
VLANs?
 Single Switch VLAN or multiple switches?
Implementation of VLAN

12.  What is inter VLAN?
 Why we need inter VLAN?
Communication between two or more
VLAN is called inter VLAN using Router
or multilayer Switch.
Inter VLAN

13. Inter VLAN Routing

14. VTP reduces administration in a
switched network, when you configure
a new VLAN on one VTP server, the
VLAN is distributed through all
switches in the domain.
VTP ( VLAN Trunking protocol)

15.  It is important to understand that a trunk link
does not belong to a specific VLAN.
 Trunk port is responsible for carrying different
VLAN traffics between two switches.
 Access port is responsible for carrying its own
VLAN traffics.
Trunk port and Access port

16. Trunk port and Access port.

17. Lets see VLAN practically