Below i present some basic Cisco IoS VLAN command to help manage basic VLAN configuration.
To remove any VLAN do the following.
(Depending on configuration you may need to do it on aggregate switches)
Once connected to your iOS
1. Removal of vlan
show vlan (take id for removal)
configure terminal (conf t)
no vlan 999 (your id)
wr (copy running-config startup-config
2. To rename any VLAN
show vlan (take id)
vlan 999 (your id)
These two basis procedure will allow you to remove your vlan or basically change it’s name if needed.