Virtual Local Area Network VLAN

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Virtual Local Area Network (VLAN)

• SAK 5036
• ADVANCED NETWORK COMPUTER

• Sulaiman Mahiddin
• Siti Rahayu Mohd Amin
• Rafedah Md Tap
• Bavani a/p Ramayah

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TOPIC

• Introduction
• What is LAN?
• What is VLAN?
• Scenario
• Requirements
• VLAN Basic
• Type of VLAN
• Benefits
• Limitations
• Examples of VLAN

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INTRODUCTION

• What is LAN?
• LAN is the glue that binds all the components in
  the office together
• It typically connects workstations, personal
  computers, printers, servers, and other devices
• What is VLAN?
• A LAN that is configured on the basis of network
  address or some other grouping criterion.
• A group of devices on different physical LAN
  segments which can communicate with each other as
  if they were all on the same physical LAN.
• A logical grouping of network nodes that act as
  if they are connected to a single, shared-media
  network.
• A group of PCs, servers and other network
  resources that behave as if they were connected
  to a single, network segment.
• A LAN CARVED INTO SMALLER LOGICAL LANs

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INTRODUCTION

• Scenario
• You are IT administrator for a company that wants
  to perform a complete reorganization from 10
  departments to 40, all of which want to have
  their own LAN
• Solutions
• Using multiple LANs
• Using VLAN
• Requirements before deciding to implement VLAN
• User-based
• Role-based
• Context-based

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VLAN BASIC

• Physical LAN connecting few VLANs

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TYPE OF VLAN

• Port-based VLAN
• Each port of a switch is assigned to a particular
  VLAN
• MAC address-based VLAN
• VLAN membership is determined by the MAC address
  of each individual nodes
• Protocol-based VLAN
• Each packets protocol addressing is examined
  individually by the switch to determine VLAN
  membership

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BENEFITS

• Flexible network segmentation
• Simple management
• Increased performance
• Better use of server resources
• Enhanced network security

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LIMITATIONS

• Broadcast limitations
• Device limitations
• Port constraints

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EXAMPLES OF VLAN

• Simple structure workstations and servers are
  in the same VLAN, no routing between VLANs

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EXAMPLES OF VLAN
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EXAMPLES OF VLAN

• Complex structure servers are groups in one
  VLAN, while workstations are in other VLAN

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EXAMPLES OF VLAN
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