What is a VLAN in networking?
In essence, a VLAN is a collection of devices or network nodes that communicate with one another as if they made up a single LAN, when in reality they exist in one or several LAN segments.
What is the normal VLAN range?
VLAN Ranges
| VLANs | Range | Usage |
|---|---|---|
| 1 | Normal | Cisco default. You can use this VLAN but you cannot delete it. |
| 2-1001 | Normal | For Ethernet VLANs; you can create, use, and delete these VLANs. |
| 1002-1005 | Normal | Cisco defaults for FDDI and Token Ring. You cannot delete VLANs 1002-1005. |
| 1006-4094 | Extended | For Ethernet VLANs only. |
What is VLAN in Cisco?
A VLAN is a group of devices on one or more LANs that are configured to communicate as if they were attached to the same wire, when in fact they are located on a number of different LAN segments. Because VLANs are based on logical instead of physical connections, they are extremely flexible.
Do VLAN numbers matter?
Technically, vlan number does not matter much.
Does a VLAN need an IP?
As each VLAN is a different network, they need their own address subnet (IPv4 and IPv6). The Campus Core switch will route between each VLAN (so called L3-switch: an ethernet switch which has some L3 routing capability). These IP addresses are also documented in the master IP address plan.
What does VLAN stand for?
Virtual LAN. A virtual LAN ( VLAN) is any broadcast domain that is partitioned and isolated in a computer network at the data link layer ( OSI layer 2 ). LAN is the abbreviation for local area network and in this context virtual refers to a physical object recreated and altered by additional logic.
What is a Static VLAN?
Network administrators often refer to static VLANs as “port-based VLANs.” A static VLAN requires an administrator to assign individual ports on the network switch to a virtual network. No matter what device plus into that port, it becomes a member of that same pre-assigned virtual network.
How many VLANs are there in the model?
The model contains four VLAN-unaware and two VLAN-aware end-point devices separated on different edge switch ports. A common configuration is to place VLAN-aware switches at the access layer and assign VLANs there.
What is dynamic VLAN configuration?
Dynamic VLAN configuration allows an administrator to define network membership according to characteristics of the devices themselves rather than their switch port location. For example, a dynamic VLAN can be defined with a list of physical addresses (MAC addresses) or network account names.