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Configuring Normal-Range VLANs
Beginning in privileged EXEC mode, follow these steps to create or modify an Ethernet VLAN:
Command
Step 1
configure terminal
Step 2
vlan vlan-id
Step 3
name vlan-name
Step 4
mtu mtu-size
Step 5
end
Step 6
show vlan {name vlan-name | id vlan-id} Verify your entries.
Step 7
copy running-config startup config
To return the VLAN name to the default settings, use the no name, no mtu, or no remote-span VLAN
configuration commands.
This example shows how to create Ethernet VLAN 20, name it test20, and add it to the VLAN database:
Switch# configure terminal
Switch(config)# vlan 20
Switch(config-vlan)# name test20
Switch(config-vlan)# end
Deleting a VLAN
When you delete a VLAN from a switch that is in VTP server mode, the VLAN is removed from the
VLAN database for all switches in the VTP domain. When you delete a VLAN from a switch that is in
VTP transparent mode, the VLAN is deleted only on that specific switch.
You cannot delete the default VLANs for the different media types: Ethernet VLAN 1 and FDDI or
Token Ring VLANs 1002 to 1005.
Caution
When you delete a VLAN, any ports assigned to that VLAN become inactive. They remain associated
with the VLAN (and thus inactive) until you assign them to a new VLAN.
Catalyst 2928 Switch Software Configuration Guide
13-8
Purpose
Enter global configuration mode.
Enter a VLAN ID, and enter VLAN configuration mode. Enter a new
VLAN ID to create a VLAN, or enter an existing VLAN ID to modify
that VLAN.
The available VLAN ID range for this command is 1 to 4094.
Note
For information about adding VLAN IDs greater than 1005
(extended-range VLANs), see the
Extended-Range VLANs" section on page
(Optional) Enter a name for the VLAN. If no name is entered for the
VLAN, the default is to append the vlan-id with leading zeros to the
word VLAN. For example, VLAN0004 is a default VLAN name for
VLAN 4.
(Optional) Change the MTU size (or other VLAN characteristic).
Return to privileged EXEC mode.
(Optional) If the switch is in VTP transparent mode, the VLAN
configuration is saved in the running configuration file as well as in the
VLAN database. This saves the configuration in the switch startup
configuration file.
Chapter 13
Configuring VLANs
"Configuring
13-10.
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Troubleshooting
