How does VLAN mobility work?

Aruba Employee
Aruba Employee

Product and Software: This article applies to all Aruba controllers and ArubaOS 2.5 and later.


VLAN (Layer 2) mobility allows user to roam across APs on the same or different controllers without having much configuration overhead. This feature is totally transparent to the wireless user.



Same ESSID: The user VLAN is available on all controllers that participate the VLAN mobility. Those VLANs must be trunked so the bridge table of all controllers can be updated.



2.x: stm vlan-mobility enable|disable
3.x: (Virtual AP profile "default") #<no> vlan-mobility


How It Works

After VLAN mobility is enabled, upon receive an association frame, the station management process does a lookup in these tables:

  • station table
  • datapath bridge table

If there is a hit, the station inherits the VLAN entry of those tables. Otherwise, the station follows the regular process and is assigned a VLAN based on the VLAN assignment rule.

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Last update:
‎07-02-2014 04:34 PM
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