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111 | NetworkConfigurationParameters DellPowerConnectW-SeriesArubaOS6.2 | User Guide
5. In the Assignment Type field, select Hash or Even from the drop-down menu. See "Distinguishing Between Even
and Hash Assignment Types" on page 111 for information and condtions regarding Hash and Even assignment
types
NOTE: The Even VLAN pool assignment type is only supported in tunnel and dtunnel modes. It is not supported in split or bridge
modes. It is not allowed for VLAN pools that are configured directly under a virtual AP (VAP). It must only be used under named
VLANs.L2 Mobility is not compatible with the existing implementation of the Even VLAN pool assignment type.
6. Check the Pool check box if you want the VLAN to be part of a pool.
7. In the List of VLAN IDs field, enter the VLAN IDs you want to add to this pool. If you know the ID, enter
each ID separated by a comma. Or, click the drop-down list to view the IDs then click the <-- arrow to add the
ID to the pool..
NOTE: VLAN pooling should
not
be used with static IP addresses.
8. You must add two or more VLAN IDs to create a pool.
9. When you finish adding all the IDs, click Add.
The VLAN pool along with its assigned IDs appears on the VLAN Pool window. If the pool is valid its status is
enabled.
Figure 29: Creating a VLAN Pool
10. Click Apply.
11. At the top of the window, click Save Configuration.
Distinguishing Between Even and Hash Assignment Types
The VLAN assignment type determines how a VLAN assignment is handled by the controller.
The Hash assignment type means that the VLAN assignment is based on the station MAC address. The Even
assignment type is based on an even distribution of VLAN pool assignments.
The Even VLAN Pool assignment type maintains a dynamic latest usage level of each VLAN ID in the pool.
Therefore, as users age out, the number of available addresses increases. This leads to a more even distribution of
addresses.
The Even type is only supported in tunnel and dtunnel modes. It is not supported in split or bridge modes and it is
not allowed for VLAN pools that are configured directly under a virtual AP. It can only be used under named VLANs.