Virtual LAN Introduction of VLAN and Types of VLAN
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Virtual LAN: Introduction of VLAN and Types of VLAN (Computer Science)
Virtual LAN
Topics:
- Introduction on VLAN
- Working with examples
- Types of VLANs
- Characteristics
- Advantages
Introduction on VLAN
- VLAN stands for ‘Virtual Local Area Network’ .
- It is a subnetwork or a segment of a local area network configured by software, not by physical wiring.
- Reason for segmentation is to make broadcasting possible at the Data Link Layer.
- The stations in each segment from a group that can be the recipient of a broadcast message.
- The message can come from some station in the group or from another outside of the group.
- The idea of VLAN technology is to divide a LAN into logical, instead of physical, segments.
- The group membership in VLAN՚s is defined by software, not hardware.
- Example: If a person moves from one group to another, there is no need to change the physical configuration.
Two Switches in a Backbone Using VLAN Software
Types of VLANs
- A Protocol VLAN- which has traffic handled based on its protocol.
- Static VLAN- also referred to as port-based VLAN, needs a network administrator to assign the ports on a network switch to a virtual network.
- Dynamic VLAN- allows a network administrator just to define network membership based on device characteristics, as opposed to switch port location.
VLAN Characteristics
- Membership: Different vendors use different characteristics such as port number, MAC addresses, IP addresses, etc.
- Port Number: some uses switch port number as a membership.
- MAC addresses
- Combination
- Combination between switches
- Time-Division Multiplexing (TDM)
- Frame Tagging
- IP Addresses
- Multicast IP Addresses
- Configuration
- Manual Configuration
- Automatic Configuration
- Semiautomatic Configuration
Advantages
- Reduce cost
- Reduce time
- Creating virtual workgroups
- Security
- Reduce network traffic
MCQ
Q1. VLAN technology divides a LAN into________ segments.
- Physical
- Logical
- Multiplexed
- Framed
Answer: 2
Q2.In a VLAN, the stations are separated into groups by________ .
- Physical methods
- Software methods
- Locations
- Switches
Answer: 2
#VLAN
#How it works
#Types of VLANs
#Characteristics
#Advantages
✍ Mayank