D-Link DFE-580TX Manual page 13

Load Balancing Settings
The Load Balancing Settings section allows you to select between the three supported load-
balancing options or to disable load balancing all together.
Load Balancing Disabled
Selecting the checkbox next to "Load Balancing Disabled" will disable the load balancing
function leaving D-Link Server Card Software to provide only failover across the adapters in
the array. With this option checked, D-Link Server Card Software will normally send data
only through the primary adapter unless a failover event is detected.
NOTE: Changing this setting requires a reboot before the change will take effect.
D-Link Server Card Software ELB (Enhanced Load Balancing)
D-Link Server Card Software ELB provides enhanced load balancing using our own
proprietary load-balancing scheme designed to maximize both inbound and outbound load
balancing while minimizing CPU overhead and latency in the network. Also, this option is the
only load-balancing option that supports the simultaneous use of D-Link Server Card
Software's award winning fault-tolerance features.
NOTE:
802.3ad Trunking support
Use the 802.3ad checkbox when establishing an 802.3ad trunk between the D-Link Server
Card Software system and a switch that supports the IEEE 802.3ad trunking standard. When
an 802.3ad trunk is established, inbound load balancing is offloaded to the switch.
Important: Please make sure your switch supports the IEEE 802.3ad trunking standard and
not a proprietary trunking method. Also, make sure the ports are configured properly. If not,
load balancing will not work properly if the 802.3ad option is selected.
When using 802.3ad for load balancing, D-Link Server Card Software's advanced failover
functionality will be disabled and failover will be limited to the Status Indications method of
failover.
DFE-580TX Fast Ethernet Server Card Manual
The D-Link Server Card Software ELB is the only load balancing
option that allows for the use of D-Link Server Card Software' award-
winning fault tolerance features.
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