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Catalyst 2950 Desktop Switch Software Configuration Guide
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Chapter 14 Co n figuring VLANs
Configur ing Normal-R ange VLANs
To return the VLAN name to the default settings, use the no vlan vlan-id name or no vlan vlan-id mtu
VLAN configuration command.
This example shows how to use VLAN configuration mode to create Ethernet VLAN 20, name it test20,
and add it to the VLAN database:
Switch# vlan database
Switch(vlan)# vlan 20 name test20
Switch(vlan)# exit
APPLY completed.
Exiting....
Switch#

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 canno t dele te the default VLANs fo r the different me dia types: Ethern et 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.
Beginning in privileged EXEC mode, follow these steps to delete a VLAN on the switch by using global
configurati on m ode:
To dele te a V LAN by us ing VLA N c onfiguratio n m ode , use the vlan data base p rivileged EXE C
comm an d to e nter VL A N co nfigur atio n mode a nd the no vlan vlan-id VLAN co nfigurati on comm and.
Step 4 exit Update the VLAN database, propagate it throughout the administrati ve
domain, and r etur n t o pr ivileged EX E C m ode.
Step 5 show vlan {name vlan-nam e | id vlan-i d} Verify your entries.
Step 6 copy running-config startup config (Optional) If the switch is in VTP transparent mode, the VLAN
conf iguration is sav ed in th e running co nfigur ation fi le as wel l as in the
VLAN database. This saves the configuration in the switch startup
configurati on file.
Command Purpose
Command Purpose
Step 1 configure terminal Enter glob al con figuration mo de.
Step 2 no vlan vlan-id Remove the VLAN by entering the VLAN ID.
Step 3 end Return to privileged EXEC mode.
Step 4 show vlan brief Verify the V LA N removal.
Step 5 copy running-config startup config (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.