1. Virtual LAN (VLAN) Christopher Lee Leo Putra Mardjuki Christopher Lee Leo Putra Mardjuki

2. Table of Contents Introduction Two approaches to designing VLAN: Single-Switch VLAN The four layers of VLANs Multi-Switch VLAN Operating Characteristics Advantages Disadvantages Conclusion References Questions time Introduction Two approaches to designing VLAN: Single-Switch VLAN The four layers of VLANs Multi-Switch VLAN Operating Characteristics Advantages Disadvantages Conclusion References Questions time

3. Introduction  VLAN stands for Virtual Local Area Network.  viewed as a group of devices on different physical LAN  can communicate with each other as if they were all on the same physical LAN  Configured through software rather than hardwaresoftware hardware  extremely flexible.  VLAN stands for Virtual Local Area Network.  viewed as a group of devices on different physical LAN  can communicate with each other as if they were all on the same physical LAN  Configured through software rather than hardwaresoftware hardware  extremely flexible.

4. Single-Switch VLAN VLAN operates only inside one switch There are different types of Single-Switch VLAN: Layer 1 Layer 2 Layer 3 Layer 4 VLAN operates only inside one switch There are different types of Single-Switch VLAN: Layer 1 Layer 2 Layer 3 Layer 4

5. Layer-1 VLANs Port-based VLANs Uses the physical layer port number on the front of the VLAN switch to assign computers to VLAN segments Network manager must know which computer is connected to which port Advantage Configuration is fairly straightforward Port-based VLANs Uses the physical layer port number on the front of the VLAN switch to assign computers to VLAN segments Network manager must know which computer is connected to which port Advantage Configuration is fairly straightforward

6. Layer-2 VLANs MAC-based VLANs Uses the data link layer address to form the VLANs Advantage: Simpler to manage when computers are moved NO configuration is needed MAC-based VLANs Uses the data link layer address to form the VLANs Advantage: Simpler to manage when computers are moved NO configuration is needed

7. Layer-3 VLANs IP-based VLANs Uses the network layer address to form the VLANs Compared to Layer-2: Reduce the time spent reconfiguring the network A bit slower at processing each message Advantage: Can manually input/change IP addresses NO configuration is needed

8. Layer-4 VLANs Application-based VLANs Uses the type of application indicated by port number in the TCP packet in combination with the network layer addresses to form the VLAN groups Very complex process Network manager must decide on variety of different factors in forming the VLANs Advantage: Very precise allocation of network capacity Application-based VLANs Uses the type of application indicated by port number in the TCP packet in combination with the network layer addresses to form the VLAN groups Very complex process Network manager must decide on variety of different factors in forming the VLANs Advantage: Very precise allocation of network capacity

9. Multi-Switch VLAN

10. Multi-Switch VLAN cont. Works the same way as a Single-Switch VLAN, except: Several switches are used Switches must be able to send packets among themselves in a way that identifies the VLAN to which the packet belongs. Works the same way as a Single-Switch VLAN, except: Several switches are used Switches must be able to send packets among themselves in a way that identifies the VLAN to which the packet belongs.

11. Advantages Increased performance Improved manageability Physical independence Increased Security Option Increased performance Improved manageability Physical independence Increased Security Option

12. Disadvantages Costly Software based Human labor to program Depending on variety switches Management complexity Costly Software based Human labor to program Depending on variety switches Management complexity

13. Conclusion Reduce the cost of dealing with moves and changes For organizations, seen as an added benefit Reduce the cost of dealing with moves and changes For organizations, seen as an added benefit

14. References "VLAN Information." UCDavis Network 21. 06 Mar. 2006. "VLAN." 06 Mar. 2006. "Answers.com." Virtual LAN. 06 Mar. 2006. "Network World Research Center." VLAN (Virtual LAN). 06 Mar. 2006. "The Virtual LAN Technology Report." 1996. decisys. 06 Mar. 2006. "Virtual LAN." Wikipedia The Free Online Encyclopedia. 02 Mar. 2006. 06 Mar. 2006. "VLAN Information." UCDavis Network 21. 06 Mar. 2006. "VLAN." 06 Mar. 2006. "Answers.com." Virtual LAN. 06 Mar. 2006. "Network World Research Center." VLAN (Virtual LAN). 06 Mar. 2006. "The Virtual LAN Technology Report." 1996. decisys. 06 Mar. 2006. "Virtual LAN." Wikipedia The Free Online Encyclopedia. 02 Mar. 2006. 06 Mar. 2006.

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