To add a vlan and give it a name:

2811a>enable
2811a#vlan database
2811a(vlan)#vlan 201
2811a(vlan)#vlan 201 name 201-vlan
2811a(vlan)#exit

After that, you can show what you’ve added:

2811a#vlan database
2811a(vlan)#show

The output might be something like this:

VLAN ISL Id: 1
Name: default
Media Type: Ethernet
VLAN 802.10 Id: 100001
State: Operational
MTU: 1500
Translational Bridged VLAN: 1002
Translational Bridged VLAN: 1003
VLAN ISL Id: 201
Name: 201-vlan
Media Type: Ethernet
VLAN 802.10 Id: 100201
State: Operational
MTU: 1500
…