VLANs

VLAN VLANs are...logical groupings of devices or users that can be grouped by function, department, or application, regardless of their physical segment location. Why create VLANs? Because...when using VLANs you don't have to physically add or remove users. When a user or a group needs to be moved or changed, you don't need to re-ip address the system. The 5 components of VLAN implementation are... 1. simplifies, moves, adds, and changes 2. reduces administrative cost 3. better control of broadcasts 4. tighter network security 5. microsegments with scalability Switches make VLANs possible by...connecting LAN segments. Hubs can be used with switches and VLANs in order to...greater the microsegmentation and greater the VLAN flexability to assign individual users to VLAN groups. Specific VLAN types include: 1.port-centric which is when all the nodes connected to ports in the same VLAn are assigned to the same VLAN ID. 2.Static which is when all ports on a switch are statically assigned to a VLAN by an administrator. 3. Dynamic which is when ports on a switch automatically determine their VLAN assignments. The difference between static and dynamic VLANs are...static VLANs must be manually configured by an administrator and are more secure, while dynamic VLANs are configured automatically. VLAN frame filtering and VLAN frame tagging are...both techniques that look at a frame when it is either received or forwarded by the switch. Frame filtering builds a table for each switch and switch share table information to determine appropriate action. Frame tagging uniquely assigns a VLAN ID to each frame. Frame Tagging requires little processing and administrative overhead. In this lesson I learned...all about the wonderful world of VLANs. This is important to network designers because...VLANs increase network efficiency and lower overhead.