Contents
What is the range of normal VLAN?
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. |
How high can VLAN numbers go?
4,094
Under IEEE 802.1Q, the maximum number of VLANs on a given Ethernet network is 4,094 (4,096 values provided by the 12-bit VID field minus reserved values at each end of the range, 0 and 4,095).
What is standard 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. Extended VLANs are not stored in the vlan. The VLAN 0 is used when a device needs to send priority tagged frames but does not know in which particular VLAN it resides.
How long is a VLAN tag?
The VLAN tag is a two-byte field inserted between the source MAC address and the Ethertype (or length) field in an Ethernet frame.
What’s the maximum number of VLANs cisco can support?
Maximum Number of VLANs. Each Virtual LAN (VLAN) requires one IDB. Any Cisco IOS software release can support up to 4096 VLANs (0-4095, where the number range is 1 to 4094 and in which 0, 4095 are reserved), if the platform supports at least 4000 IDBs.
How to create a VLAN range in Cisco?
Use the define interface-range command to create and save a range. When you define a VLAN range, valid values are from 1 to 4095. The last VLAN number cannot exceed 4095. This example shows how to use the interface range command to configure a subinterface range:
What is the allowed range of VLAN IDs?
Applies a unique VLAN ID to each subinterface within the range. vlan-id —Virtual LAN identifier. The allowed range is from 1 to 4095. The VLAN ID specified by the vlan-id argument is applied to the first subinterface in the range.
How do I save a VLAN range to NVRAM?
All configuration changes made to a range of subinterfaces are saved to NVRAM, but the range itself does not get saved to NVRAM. Use the define interface-range command to create and save a range. When you define a VLAN range, valid values are from 1 to 4095.