H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 125)

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Traffic snapshot is considered for traffic mode load balancing.
As shown in
Figure 62 , Client 1 and Client 2 that run 802.11g are associated with AP 1. The AC
has traffic-mode load balancing configured: the maximum traffic threshold is 10% and the
maximum traffic gap is 20%. Then, Client 3 wants to access the WLAN through AP 1. The
maximum traffic threshold and traffic gap (between AP 1 and AP 2) have been reached on AP 1,
so it rejects the request. At last, Client 3 associates with AP 2.
Figure 62 Network diagram for traffic-mode load balancing
Load-balancing methods
The AC supports AP-based load balancing and group-based load balancing.
1. AP-based load balancing
AP-based load balancing can be either implemented among APs or among the radios of an AP.
{
AP-based load balancing
APs can carry out either session-mode or traffic-mode load balancing as configured. An AP
starts load balancing when the maximum threshold and gap are reached. It does not accept
any association requests unless the load decreases below the maximum threshold or the gap
is less than the maximum gap. However, if a client has been denied more than the specified
maximum times, the AP considers that the client is unable to associate to any other AP and
accepts the association request from the client.
{
Radio-based load balancing
The radios of an AP that is balanced can carry out either session-mode or traffic-mode load
balancing as configured. A radio starts load balancing when the maximum threshold and gap
are reached. It rejects any association requests unless the load decreases below the maximum
threshold or the gap is less than the maximum gap. However, if a client has been denied more
than the specified maximum times, the AP considers that the client is unable to associate to any
other AP and accepts the association request from the client.
2. Group-based load balancing
To balance loads among the radios of different APs, you can add them to the same load balancing
group.
The radios in a load balancing group can carry out either session-mode or traffic-mode load
balancing as configured. The radios that are not added to any load balancing group do not carry