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====== Cisco - Switch - VLANs ======

<WRAP info>
**NOTE:**  Every Cisco switch has VLAN 1 on it by default.
</WRAP>

----

===== Check the VLANs =====

<code bash>
show vlan
</code>

returns:

<code bash>
...
1    default   active     Fa0/1, Fa0/2, Fa0/3, Fa0/4
                          Fa0/5, Fa0/6, Fa0/7, Fa0/8
                          Fa0/9, Fa0/10, Fa0/11, Fa0/12
                          Fa0/13, Fa0/14, Fa0/15, Fa0/16
                          Fa0/17, Fa0/18, Fa0/19, Fa0/20
                          Fa0/21, Fa0/22, Fa0/23, Fa0/24
...
</code>

<WRAP info>
**NOTE:**  This shows that all 24 ports are on VLAN1.
</WRAP>


----

===== Create a new VLAN =====

<code bash>
vlan 50
exit
</code>

----

==== Assign port FA0/1-FA0/4 to that VLAN ====

<code bash>
interface range fastethernet 0/1 – 4
switchport mode access
switchport access vlan 50
exit
</code>

----

==== Check that VLAN has been configured ====

<code bash>
show vlan
</code>

returns:

<code bash>
...
1    default    active    Fa0/5, Fa0/6, Fa0/7, Fa0/8
                          Fa0/9, Fa0/10, Fa0/11, Fa0/12
                          Fa0/13, Fa0/14, Fa0/15, Fa0/16
                          Fa0/17, Fa0/18, Fa0/19, Fa0/20
                          Fa0/21, Fa0/22, Fa0/23, Fa0/24
50   VLAN0020   active    Fa0/1, Fa0/2, Fa0/3, Fa0/4
...
</code>

<WRAP info>
**NOTE:**  This shows that ports 1-4 are now on VLAN50.
</WRAP>


----

===== Delete VLAN =====

Remove assigned ports to VLAN 50.

<code bash>
interface range fastethernet 0/1 – 4
switchport mode access
switchport access vlan 1
</code>

<WRAP info>
**NOTE:**  This moves them back to VLAN 1.
</WRAP>


----

==== Remove the VLAN ====

<code bash>
no vlan 50
</code>

----

==== Check that the VLAN has been removed ====

<code bash>
show vlan
</code>

<WRAP info>
**NOTE:**  This should show all ports are back to VLAN 1 and VLAN 50 is deleted.
</WRAP>