D-Link DWC-1000 User Manual page 48

Wireless Controller
and let low-volume background traffic (such as SMTP) go over the lower speed link.
Protocol binding is explained in next section.
Spill Over: If Spill Over method is selected, WAN1 acts as a dedicated link till a
threshold is reached. After this, WAN2 will be used for new connections. You can
configure spill-over mode by using folloing options:

Load Tolerance: It is the percentage of bandwidth after which the controller
switches to secondary WAN.

Max Bandwidth: This sets the maximum bandwidth tolerable by the primar y
WAN.
If the link bandwidth goes above the load tolerance value of max bandwidth, the
controller will spill-over the next connections to secondary WAN.
For example, if the maximum bandwidth of primary WAN is 1 Kbps and the load
tolerance is set to 70. Now every time a new connection is established the
bandwidth increases. After a certain number of connections say bandwidth reached
70% of 1Kbps, the new connections will be spilled -over to secondary WAN. The
maximum value of load tolerance is 80 and the leas t is 20.
Protocol Bindings: Refer Section 3.4.3 for details
Load balancing is particularly useful when the connection speed of one WAN port
greatly differs from another. In this case you can define protocol bindings to route
low-latency services (such as VOIP) over the higher-speed link and let low-volume
background traffic (such as SMTP) go over the lower speed link.
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User Manual