Cisco Systems N3KC3064TFAL3 Creating, Deleting, and Modifying VLANs, VLANs Numbers, Range, Usage

Configuring VLANs

Creating, Deleting, and Modifying VLANs

Table 4: VLAN Ranges
VLANs Numbers	Range	Usage
1	Normal	Cisco default. You can use this
		VLAN, but you cannot modify or
		delete it.
2—1005	Normal	You can create, use, modify, and
		delete these VLANs.
1006—3967 and 4048—4093	Extended	You can create, name, and use
		these VLANs. You cannot change
		the following parameters:
		• The state is always active.
		• The VLAN is always
		enabled. You cannot shut
		down these VLANs.
3968-4047 and 4094	Internally allocated	These 80 VLANs and VLAN 4094
		are allocated for internal device
		use. You cannot create, delete, or
		modify any VLANs within the
		block reserved for internal use.

The software allocates a group of VLAN numbers for features like multicast and diagnostics, that need to use internal VLANs for their operation. You cannot use, modify, or delete any of the VLANs in the reserved group. You can display the VLANs that are allocated internally and their associated use.

Creating, Deleting, and Modifying VLANs

VLANs are numbered from 1 to 4094. All configured ports belong to the default VLAN when you first bring up the switch. The default VLAN (VLAN1) uses only default values. You cannot create, delete, or suspend activity in the default VLAN.

You create a VLAN by assigning a number to it. You can delete VLANs as well as move them from the active operational state to the suspended operational state. If you attempt to create a VLAN with an existing VLAN ID, the switch goes into the VLAN submode but does not create the same VLAN again.

Newly created VLANs remain unused until ports are assigned to the specific VLAN. All the ports are assigned to VLAN1 by default.

Depending on the range of the VLAN, you can configure the following parameters for VLANs (except the default VLAN):

•VLAN name

•Shutdown or not shutdown

Cisco Nexus 3000 NX-OS Layer 2 Switching Configuration Guide, Release 5.0(3)U3(1)

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