This document discusses VLANs and trunking. VLANs logically partition physical networks into virtual networks to facilitate management, security, and performance. Trunking enables transmission of multiple VLANs over a single link to improve resource use and simplify network design. Key components include the 802.1Q protocol for tagging frames and trunk ports for interconnecting devices that support VLAN trunking.

2. VLAN AND TRUNKING
BY
MUHAMMAD FAISAL (12881)
QUDRAT ULLAH (12915)

3. VLAN DEFINITION
• VLAN is a method of logically partitioning a physical network into distinct
virtual networks, facilitating efficient management, security, and performance
optimization

4. VLAN FUNCTIONALITY
• VLANs enable the creation of isolated groups of devices that can
communicate internally, irrespective of their physical location. This
segmentation aids in streamlining network administration and bolstering
security protocols

5. TRUNKING DEFINITION
• Trunking is a networking technique that enables the transmission of multiple
Virtual LANs over a singular network link, enhancing resource utilization
and simplifying network architecture

6. ESSENTIAL COMPONENTS AND PROTOCOLS
1. 802.1Q Protocol: Widely adopted for VLAN trunking, this protocol appends a 4-
byte VLAN tag to Ethernet frames, furnishing switches with the means to discern and
process VLAN information.
2.Trunk Ports: Configured to transport traffic for multiple VLANs, trunk ports
serve as connectors for devices supporting VLAN trunking, such as switches and
routers.
3.Native VLAN: Designated within a trunked link, the native VLAN is exempt
from VLAN tagging. It serves as a default for untagged traffic, contributing to the
efficient management of network traffic.

7. VLAN FEATURES
1. Logical Segmentation
2. Broadcast Control
3. Enhanced Security
4. Simplified Network Management
5. Flexible Design
6. Improved Performance
7. Scalability

8. VLAN TYPES
1. Default VLAN: The VLAN to which all switch ports belong by default;
usually VLAN 1.
2. Data VLAN: Used for user data and general network traffic.
3. Management VLAN: Dedicated for network management and device
administration.
4. Voice VLAN: Segregates voice traffic for VoIP applications.

9. VLAN AND TRUNKING USE
• VLANs are employed for network segmentation, enhancing security and
performance, while trunking facilitates the efficient transmission of multiple
VLANs over a single link, optimizing network resource utilization.

10. COMMUNICATION DIAGRAM

11. CONFIGURED VLAN

12. EXPLANATION THROUGH CISCO FILE