2. VLANs (Virtual Local Area Networks)

2.1. Example 2

Example: In a network with multiple switches, STP ensures only one active path exists.

Port Mirroring

Purpose: Copies traffic from one port to another for monitoring.

Benefits:

Aids in troubleshooting and network analysis.

Supports intrusion detection systems (IDS).

Example: Using Wireshark to analyze traffic mirrored from a busy server port.

5. Practical Exploration

Tool: Cisco Packet Tracer.

Hands-On Task:

Unmanaged Switch Simulation: Set up a LAN with an unmanaged switch and 4 devices. Test connectivity and observe automatic MAC address learning.

Managed Switch Simulation: Configure a managed switch with two VLANs (e.g., VLAN 10 for PCs, VLAN 20 for servers). Test inter-VLAN communication restrictions.

QoS Configuration: Prioritize simulated VoIP traffic on a managed switch and compare performance with a non-prioritized setup.

Observation: Compare the ease of setup for unmanaged vs. managed switches and the benefits of VLANs in traffic segmentation.

6. Choosing Between Unmanaged and Managed Switches

Unmanaged Switches:

Best for small, simple networks with no need for customization.

Ideal for non-technical users or temporary setups.

Example: A home network with a few devices.