16-11
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
OL-10101-02
Chapter 16 Configuring VLANs
Configuring Extended-Range VLANs
This example shows how to configure a port as an access port in VLAN 2:
Switch# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)# interface
Switch(config-if)# switchport mode access
Switch(config-if)# switchport access vlan 2
Switch(config-if)# end
Switch#
Configuring Extended-Range VLANs
When the switch is in VTP transparent mode (VTP disabled), you can create extended-range VLANs (in
the range 1006 to 4094 for any switch port commands that allow VLAN IDs). Enter the vlan vlan-id
global configuration command to access config-vlan mode and to configure extended-range VLANs.
The VLAN database configuration mode (that you access by entering the vlan database privileged
EXEC command) does not support the extended range.
Extended-range VLAN configurations are not stored in the VLAN database. Because VTP mode is
transparent, they are stored in the switch running configuration file. You can save the configuration in
the startup configuration file by using the copy running-config startup-config privileged EXEC
command.
Note Although the switch supports 4094 VLAN IDs, see the “Supported VLANs” section on page 16-2 for
the actual number of VLANs supported.
This section includes this information about extended-range VLANs:
• Default VLAN Configuration, page 16-11
• Extended-Range VLAN Configuration Guidelines, page 16-11
• Creating an Extended-Range VLAN, page 16-12
• Displaying VLANs, page 16-13

Default VLAN Configuration

See Table 16-2 on page 16-7 for the default configuration for Ethernet VLANs. You can change only the
MTU size on extended-range VLANs; all other characteristics must remain at the default state.

Extended-Range VLAN Configuration Guidelines

Follow these guidelines when creating extended-range VLANs:
• To add an extended-range VLAN, you must use the vlan vlan-id global configuration command and
access config-vlan mode. You cannot add extended-range VLANs in VLAN database configuration
mode (accessed by entering the vlan database privileged EXEC command).
• VLAN IDs in the extended range are not saved in the VLAN database and are not recognized by
VTP.
• You cannot include extended-range VLANs in the pruning eligible range.