What is VLAN and Why VLAN?

hello and this is sunny welcome back today my topic is veiling and why we need real I'm reelin stands for virtual local area network Vila is a logical network that can group devices or users regardless of their different physical locations Avila is created at the switch YV line there's many reasons why we need a villains in this video I will talk about three reasons only one segmentation let us say this network we helped with two departments cells and finest both of them are connected to one switch it means both departments belong to one network or one broadcast Adame one broadcast domain means when one computer broadcasts everyone else can hear this type of network design could cause two potential problems at least one traffic congestion and poor performance if there's too many users in one broadcasted ami to security concerns because of the different departments sharings one same network to address these two problems here are three possible solutions solution one we can buy more switches and routers sells department care has his own switch and the finance department can share another one now they are in two different independent networks to separate broadcast domains with a layer 3 device or router in between these two networks can talk to each other solution to we can create with two villains with one switch like this physically these two departments she is one physical switch but virtually they are in two different independent villains we can also add one rotor so that two villains can talk to each other using a technique called chunking or trunk don't worry about trunking or trunk at this point all we need to know now is trunking or trunk can carry different network data over one physical line simultaneously solution three we can use a multi-layer switch to create with two independent villains just like a solution - the difference is that we don't need a physical router in between instead these two villains can talk to each other using inter VLAN routing techniques which i will talk about in a separate video here we just remember with the multi-layer switches we can create different villains and we can also provide routing abilities across these villains without a physical router in between the second reason is villains can greatly simplify network design and deployment with villains you are no longer confined to physical locations users in the same department can be located in different buildings or different floors devices with the different functions or missions can be connected to the same switch without the reliance reorganising users all computers needs relocating them or rewiring physical data links which would require hours of labor and a huge budget for any organization last but not least easier troubleshooting and management with villains or shooting and a management can be simpler and a faster when differently user groups are segmented and isolated from one another IT people can quickly narrow down and fix problems without affecting other villains villains also make prioritizing traffic much easier allowing you to make sure critical application data keep flowing for example if your organization uses voice over IP or VoIP you need to have a separate voice v-line and ensure the wipe quality while keeping a certain bandwidth for other applications I hope this video is helpful if you want to learn Network systematically please check out my playlists they are organized by topics thank you very much and see you next time [Music] you

Channel: Sunny Classroom

Views: 111,116

Rating: 4.9675212 out of 5

Keywords: sunny classroom+ CompTIA network+, CompTIA Security+, networking cyber security + CCNA, CCENT, CCNP, VLAN, virtual local area, broadcast domain, logical network, advantages of VLANs, static VLAN, dynamic VLAN, virtual router, virtualization.

Id: _PPaArOxHhw

Length: 5min 24sec (324 seconds)

Published: Sat Jul 27 2019