VLAN Pooling
When
Wi-Fi is deployed in a high-density environment such as a stadium or a university
campus, the
number of IP addresses required for client devices can easily run into the thousands.
Allocating
thousands of clients into a single, large subnet or VLAN can result in degraded performance
due
to factors such as broadcast and multicast traffic. VLAN pooling is adopted to address
this
problem.
VLAN pooling allows administrators to deploy a pool of multiple VLANs to which clients are assigned, thereby automatically segmenting large groups of clients into multiple smaller subgroups, even when connected to the same SSID. As the client device joins the WLAN, the VLAN is assigned to one of the VLANs in the pool based on a hash of the client’s MAC address. To use the VLAN pooling feature, you first need to create a VLAN pooling profile, and then you can assign the profile to a specific WLAN or override the VLAN settings of a WLAN group.
Note: The 802.11ac wave 2AP models support maximum
of 64 VLANs. Other AP models support upto 32 VLANs.