BelAir20E User Guide
Operating in High Capacity and Interference Environments
April 2, 2012
Confidential
Document Number BDTM02201-A01 Standard
• In the downstream direction (to the client), only ARP response, DHCP
offer, DHCP ACK, and DHCP NAK are allowed.
In HCI environments, this feature reduces the overall traffic load by reducing
broadcast flooding throughout the network.
“Filtering Broadcast and Multicast Packets” on page 96
Secure Port Mode
Secure port mode forces all client communications to be directed toward a
specified MAC address or group of MAC addresses. It also prevents a client
claiming to be one of these MAC addresses from associating.
In HCI environments, this feature forces all traffic to flow to or from the
network gateway. This can be used to allow traffic policy enforcement. It
prevents direct inter-client communication that could load down the network.
“Controlling Inter-client Communication” on page 110
Wireless Bridging
The wireless bridging feature allows traffic to be forwarded directly from one
client to another within the AP. In HCI environments, it should be disabled.
As with secure port mode, this feature controls whether all traffic flows to the
network gateway and can be used to allow traffic policy enforcement. It
prevents client-to-client direct communication that could load down the
network.
“Controlling Inter-client Communication” on page 110
Client Load
Balancing
BelAir nodes allow you to configure the maximum number of associated clients
per radio. If the number of associated clients exceeds the configured value, new
clients are not allowed to connect.
In HCI environments, limiting the number of associated clients:
• reduces the number of collisions. (Each client attempts to transmit after a
random back-off. With many clients the probability of collision is greatly
increased.)
• limits the total traffic offered
• forces traffic to be distributed over different APs operating on different
channels
