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What is a standard VLAN?
IEEE 802.1Q, often referred to as Dot1q, is the networking standard that supports virtual LANs (VLANs) on an IEEE 802.3 Ethernet network. The standard defines a system of VLAN tagging for Ethernet frames and the accompanying procedures to be used by bridges and switches in handling such frames.
What is 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 use of extended VLAN?
Extended VLANs are VLANs within the range of 1006 to 4094. They are mainly used in service provider networks to allow the provisioning of number of customers. In order to configure an extended VLAN you have to follow the guideline below: Extended VLANs are used just like normal VLANs; only different range.
What is VLAN number?
A VLAN represents a broadcast domain. VLANs are identified by a VLAN ID (a number between 0 – 4095), with the default VLAN on any network being VLAN 1. Each port on a switch or router can be assigned to be a member of a VLAN (i.e., to allow receiving and sending traffic on that VLAN).
Which is a standard VLAN and which is an extended VLAN?
VLANs numbered from 1 to 1005 are considered as Standard VLANs and the VLANs range from 1006 to 4094 are considered as Extended VLANs.
Can a Cisco switch create an extended VLAN?
So Cisco added support for vlans following the 802.1Q standard, but for many years an important limitation was present with extended Vlans 1006-4094: they could not be created and propagated by Cisco VTP Vlan trunking protocol. To create a vlan in extended range the switch had to be configured for VTP transparent mode.
What’s the difference between a LAN and a VLAN?
The main difference between LAN (Local Area Network) and VLAN (Virtual Local Area Network) is that LAN work on single broadcast domain on the other hand VLAN works on multiple broadcast domain and In local are network, the Packet is advertised to each device while In virtual local are network, packet is send to specific broadcast domain.
Where are extended VLANs stored in vlan.dat file?
Extended VLANs are not stored in the vlan.dat file they are stored in running config. Secondly, if you create extended VLANs in Version 1 & 2, then your switch must be in transparent mode as these VLANs cannot be sent in VTP updates. VLAN 0 is reserved and not available for use