Creating, Deleting, And Modifying Vlans - Cisco Nexus 3000 series Configuration Manual

Configuring VLANs
The following table describes the details of the VLAN ranges.
Table 3: VLAN Ranges
VLANs Numbers
1
2—1005
1006—4094
3968—4047 and 4094
Note VLANs 3968 to 4047 and 4094 are reserved for internal use; these VLANs cannot be changed or used.
Cisco NX-OS allocates a group of 80 VLAN numbers for those features, such as multicast and diagnostics,
that need to use internal VLANs for their operation. By default, the system allocates VLANs numbered 3968
to 4047 for internal use. VLAN 4094 is also reserved for internal use by the switch.
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.
Range
Normal
Normal
Extended
Internally allocated
Cisco Nexus 3000 Series NX-OS Layer 2 Switching Configuration Guide, Release 5.0(3)U1(1)
Creating, Deleting, and Modifying VLANs
Usage
Cisco default. You can use this
VLAN, but you cannot modify or
delete it.
You can create, use, modify, and
delete these VLANs.
You can create, name, and use
these VLANs. You cannot change
the following parameters:
• State is always active.
• VLAN is always enabled.
You cannot shut down these
VLANs.
These 80 VLANs, plus VLAN
4094, are allocated for internal use.
You cannot create, delete, or
modify any VLANs within the
block reserved for internal use.
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