Vlan Architecture

There are five main types of VLANs depending on their purpose:

<ul class="i8Z77e"><li class="TrT0Xe">Management VLAN.</li><li class="TrT0Xe">Data VLAN.</li><li class="TrT0Xe">Voice VLAN.</li><li class="TrT0Xe">Default VLAN.</li><li class="TrT0Xe">Native VLAN.</li></ul>

What is a VLAN and how does it work?

Virtual Local Area Networks (VLANs) separate an existing physical network into multiple logical networks. Thus, each VLAN creates its own broadcast domain. Communication between two VLANs can only occur through a router that is connected to both. VLANs work as though they are created using independent switches.

What are the 2 types of VLANs?

Virtual LAN (VLAN) is created on Layer 2 switch to reduce the size of broadcast domain. ... There are 5 main types of VLANs depending on the type of the network they carry:

• Default VLAN –
• Data VLAN – ...
• Voice VLAN – ...
• Management VLAN – ...
• Native VLAN –

What is a VLAN for example?

Each virtual switch, or VLAN, is simply a number assigned to each switch port. For example, the two switch ports in the red mini-switch might be assigned to VLAN #10 . The two ports in the orange mini-switch might be assigned to VLAN #20 .

Is VLAN a Layer 2 or Layer 3?

VLANs are data link layer (OSI layer 2) constructs, analogous to Internet Protocol (IP) subnets, which are network layer (OSI layer 3) constructs. In an environment employing VLANs, a one-to-one relationship often exists between VLANs and IP subnets, although it is possible to have multiple subnets on one VLAN.

What OSI layer are VLANs?

VLANs work at layer 2, or the data link layer of the OSI model.In simple networks, VLAN bridges can be created that group the ports on a switch into VLANs based on a mapping held within the bridge.

What is the main purpose of VLAN?

VLANs allow network administrators to automatically limit access to a specified group of users by dividing workstations into different isolated LAN segments. When users move their workstations, administrators don't need to reconfigure the network or change VLAN groups.

What is the main benefit of a VLAN?

VLANs provide a number of advantages, such as ease of administration, confinement of broadcast domains, reduced broadcast traffic, and enforcement of security policies. VLANs provide the following advantages: VLANs enable logical grouping of end-stations that are physically dispersed on a network.

Is VLAN router or switch?

VLANs work on switches whereas to implement subnets you need a router. A routed network is more difficult to setup than a switched network. However a routed network does create separate broadcast domains while a switched network doesn't unles you use VLANs.

Can a VLAN have 2 IP addresses?

Two IP addresses from the same vlan cannot be assigned.

Can 1 port have 2 VLANs?

802.1Q VLAN tagging. A port can be a member of more than one VLAN of the same type if the device to which the port connects complies with the 802.1Q VLAN standard.

Can 2 VLANs have the same IP range?

Yes you can. you can only ping from vlan 2 to vlan 3 if you have a router configured and connected correctly. example 192.168. 16.23/24 on vlan 1 can not ping 192.168.

Is a VPN a VLAN?

VPNs and VLANs are different technologies with some similarities. VPNs connect authorized users to corporate network resources, while VLANs connect geographically separate devices. The technology answers to most remote work and education requirements have one word in common: virtual.

Is VLAN a switch?

A VLAN is a set of end stations and the switch ports that connect them. You can have different reasons for the logical division, such as department or project membership. The only physical requirement is that the end station and the port to which it is connected both belong to the same VLAN.

How do I route between VLANs?

The simplest way to enable routing between the two VLANs to simply connect an additional port from each VLAN into a Router. The Router doesn't know that it has two connections to the same switch — nor does it need to. The Router operates like normal when routing packets between two networks.

Why is VLAN trunking used?

Why is trunking important to VLAN configuration? With VLAN trunking, it's possible to extend a VLAN across the network. When you implement multiple VLANs across a network, trunk links are necessary to ensure that VLAN signals remain properly segregated for each to reach their intended destination.

How many VLANs can you have?

Creating a VLAN A switch supports a maximum of 4096 VLANs, among which VLANs 0 and 4095 are reserved for system use, and VLAN 1 is the default VLAN. Therefore, you can only create VLANs 2 to 4094.

Do I need Layer 3 for VLAN?

Setting-up two or more virtual LANs to communicate with each other needs the use of a Layer 3 switch or VLAN-aware router.

Do all VLANs need an IP address?

This is because each VLAN operates as a separate broadcast domain and requires a unique IP address and subnet mask. A default gateway (IP) address for the switch is optional, but recommended.

Is DHCP a VLAN?

The DHCP server will determine which IP address of subnet should be assigned to the clients based on the Layer 3 gateway. DHCP VLAN Relay: DHCP VLAN Relay can be applied in such scenario: a DHCP server is deployed to offer IP addresses to clients in multiple VLANs. These VLANs do not have VLAN interfaces.